RankingEffort benchmarks

Claude Opus 4.6 effort benchmarks

Compare measured Low, Medium, High and other settings. Every number keeps its source.

Model

Claude Opus 4.6

81 measured results · 10 reported effort labels · 57 benchmark/harness combinations. Model evidence and sources →

Capability score evidence

Claude Opus 4.6 · Max: 42.0 overall comparison score. Meets the overall evidence requirements.

Which sources carry the weight?

Artificial Analysis · 27.4% direct comparison weight · independent
Epoch AI · 26.8% direct comparison weight · independent
ARC Prize · 24.7% direct comparison weight · independent
Scale · 21.1% direct comparison weight · independent

These shares describe the comparisons entering the fit, not fractions of the final score.

How sensitive is this score?

Remove one evaluator or family and refit the graph against the same overall panel. Values use the matching dataset audited 2026-09-12. These are sensitivity checks, not confidence intervals; ranking eligibility may also change.

Removed evidence	Recomputed score	Change
Artificial Analysis	44.2	+2.2
ARC Prize	40.9	-1.2
Datacurve	38.5	-3.6
LiveCodeBench	42.0	-0.0
Scale	38.0	-4.0
Terminal-Bench	41.7	-0.3
Cognition	43.2	+1.1
LiveBench	41.9	-0.1
SWE-rebench	42.0	-0.1
Epoch AI	47.4	+5.4
Vals AI	40.9	-1.1
Provider reports · Anthropic	42.0	-0.0
Provider reports · Moonshot AI	41.9	-0.1
Provider reports · Meta	42.0	-0.0
Provider reports · Mistral	42.0	+0.0
All provider reports	41.9	-0.1

Every benchmark family

Removed evidence	Recomputed score	Change
hle	37.1	-4.9
deepswe	38.5	-3.5
enigma-eval	40.7	-1.3
mmmu-pro	43.3	+1.3
arc-agi	40.8	-1.2
frontiercode	43.2	+1.1
ifbench	43.0	+1.0
omniscience	41.4	-0.6
frontiermath	41.4	-0.6
swe-atlas-refactoring	41.5	-0.6
terminal-bench	41.6	-0.5
mmlu-pro	42.4	+0.4
apex-agents	41.6	-0.4
critpt	41.7	-0.3
simpleqa	42.3	+0.3
multi-swe-bench	41.8	-0.2
gmmlu	41.8	-0.2
harvey	41.8	-0.2
livebench-instructions	42.2	+0.2
aime	42.2	+0.2
livebench-language	42.2	+0.2
gdp-pdf	42.2	+0.1
epoch-game-puzzles	41.9	-0.1
scicode	42.1	+0.1
livebench-coding	41.9	-0.1
swe-atlas-qna	41.9	-0.1
vibe-code	41.9	-0.1
livebench-reasoning	41.9	-0.1
vals-legal-research	41.9	-0.1
gpqa	41.9	-0.1
vals-finance-agent	41.9	-0.1
arc-agi-3	42.1	+0.1
livebench-data	42.1	+0.1
swe-rebench	42.0	-0.1
swe-atlas-test-writing	42.0	-0.1
tau-bench	42.1	+0.0
vals-code-migration	42.0	-0.0
automationbench	42.0	-0.0
itbench	42.0	-0.0
gdpval	42.0	+0.0
briefcase	42.0	-0.0
analyst-agent	42.0	+0.0
livebench-math	42.0	+0.0
enterprise-ops	42.0	-0.0
vals-excel-modeling	42.0	-0.0
aa-lcr	42.0	-0.0
math500	42.0	-0.0
swe-bench-pro	42.0	+0.0
livecodebench	42.0	-0.0

What evidence is missing from the fit?

Across all collected settings for this model: 121 observations, 71 contributing, 1 matched without graph weight and 49 excluded. Counts do not establish rank eligibility.

2 · Benchmark family or source protocol has not been reviewed
6 · Fewer than two distinct model identities remain in this evaluation
1 · Effort is not identified
16 · Cited comparator requires original evaluation provenance; not a new matched run.
16 · Supporting evidence outside the reviewed capability core
7 · No reviewed effort for this catalog observation; any separately collected effort measurement is counted separately
1 · Microsoft report Table 11 and section 4.1: MAI Terminal-Bench removes timeouts and uses a minimal ReAct harness; comparator values are cited from other model releases. A common evaluation protocol is not established.

Inspect every observation and exclusion →

Capability profile

One configuration, seven capabilities

Comparison score · 0–100

AClaude Opus 4.6 · Max3 of 7 capabilities supported

Gaps are unknown, not zero. Hollow points are preliminary.

Agentic
A39.2Supported
Hard reasoning
A45.6Supported
Coding
A38.0Preliminary
Human pref
Unknown
Knowledge
A30.4Supported
Multimodal
A26.4Preliminary
Long context
A42.8Preliminary

Each profile belongs to the named configuration. Capability scores use a shared panel for all axes, distinct from the overall ranking panel; they are not accuracy percentages or direct head-to-head wins.

Compare this configuration →Explore the model evidence profile →

These are published benchmark scores. Supported effort estimates also appear on the Capability leaderboard. Results from different harnesses occupy different rows. Missing cells stay unknown; no scores are copied between effort levels.

Benchmark / source	Low	Medium	High	Max	Thinking	Thinking 32K	Thinking 64K	Thinking 120K	Non-reasoning	Unspecified
APEX-Agents-AAArtificial Analysis · Artificial Analysis published evaluation; see source for benchmark-specific settings Benchmark details Independently benchmarked by Artificial Analysis · Evaluation results measured independently by Artificial Analysis Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	Not reported	33.04% Reported settings Claude Opus 4.6 (Adaptive Reasoning, Max Effort); Model source: https://artificialanalysis.ai/models/claude-opus-4-6-adaptive	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
AA-LCR v1.1Artificial Analysis · Artificial Analysis published evaluation; see source for benchmark-specific settings Benchmark details Independently benchmarked by Artificial Analysis · Evaluation results measured independently by Artificial Analysis Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	Not reported	78% Reported settings Claude Opus 4.6 (Adaptive Reasoning, Max Effort); Model source: https://artificialanalysis.ai/models/claude-opus-4-6-adaptive	Not reported	Not reported	Not reported	Not reported	67% Reported settings Claude Opus 4.6 (Non-reasoning, High Effort); Model source: https://artificialanalysis.ai/models/claude-opus-4-6	Not reported
CritPtArtificial Analysis · Artificial Analysis published evaluation; see source for benchmark-specific settings Benchmark details Benchmark developed by Argonne and UIUC, with contributions from 60+ researchers globally · Independently benchmarked by Artificial Analysis · Evaluation results measured independently by Artificial Analysis Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	Not reported	12.57% Reported settings Claude Opus 4.6 (Adaptive Reasoning, Max Effort); Model source: https://artificialanalysis.ai/models/claude-opus-4-6-adaptive	Not reported	Not reported	Not reported	Not reported	2.84% Reported settings Claude Opus 4.6 (Non-reasoning, High Effort); Model source: https://artificialanalysis.ai/models/claude-opus-4-6	Not reported
Global-MMLU-LiteArtificial Analysis · Artificial Analysis published evaluation; see source for benchmark-specific settings Benchmark details Independently benchmarked by Artificial Analysis · Evaluation results measured independently by Artificial Analysis Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	Not reported	92.15% Reported settings Claude Opus 4.6 (Adaptive Reasoning, Max Effort); Model source: https://artificialanalysis.ai/models/claude-opus-4-6-adaptive	Not reported	Not reported	Not reported	Not reported	90.64% Reported settings Claude Opus 4.6 (Non-reasoning, High Effort); Model source: https://artificialanalysis.ai/models/claude-opus-4-6	Not reported
GPQA DiamondArtificial Analysis · Artificial Analysis published evaluation; see source for benchmark-specific settings Benchmark details Independently benchmarked by Artificial Analysis · Evaluation results measured independently by Artificial Analysis Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	Not reported	89.6% Reported settings Claude Opus 4.6 (Adaptive Reasoning, Max Effort); Model source: https://artificialanalysis.ai/models/claude-opus-4-6-adaptive	Not reported	Not reported	Not reported	Not reported	84.04% Reported settings Claude Opus 4.6 (Non-reasoning, High Effort); Model source: https://artificialanalysis.ai/models/claude-opus-4-6	Not reported
Humanity's Last ExamArtificial Analysis · Artificial Analysis published evaluation; see source for benchmark-specific settings Benchmark details Independently benchmarked by Artificial Analysis · Evaluation results measured independently by Artificial Analysis Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	Not reported	39.94% Reported settings Claude Opus 4.6 (Adaptive Reasoning, Max Effort); Model source: https://artificialanalysis.ai/models/claude-opus-4-6-adaptive	Not reported	Not reported	Not reported	Not reported	19.09% Reported settings Claude Opus 4.6 (Non-reasoning, High Effort); Model source: https://artificialanalysis.ai/models/claude-opus-4-6	Not reported
IFBenchArtificial Analysis · Artificial Analysis published evaluation; see source for benchmark-specific settings Benchmark details Independently benchmarked by Artificial Analysis · Evaluation results measured independently by Artificial Analysis Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	Not reported	53.13% Reported settings Claude Opus 4.6 (Adaptive Reasoning, Max Effort); Model source: https://artificialanalysis.ai/models/claude-opus-4-6-adaptive	Not reported	Not reported	Not reported	Not reported	44.63% Reported settings Claude Opus 4.6 (Non-reasoning, High Effort); Model source: https://artificialanalysis.ai/models/claude-opus-4-6	Not reported
MMMU-ProArtificial Analysis · Artificial Analysis published evaluation; see source for benchmark-specific settings Benchmark details Independently benchmarked by Artificial Analysis · Evaluation results measured independently by Artificial Analysis Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	Not reported	75.43% Reported settings Claude Opus 4.6 (Adaptive Reasoning, Max Effort); Model source: https://artificialanalysis.ai/models/claude-opus-4-6-adaptive	Not reported	Not reported	Not reported	Not reported	72.54% Reported settings Claude Opus 4.6 (Non-reasoning, High Effort); Model source: https://artificialanalysis.ai/models/claude-opus-4-6	Not reported
AA-Omniscience IndexArtificial Analysis · Artificial Analysis published evaluation; see source for benchmark-specific settings Benchmark details AA-Omniscience Index (higher is better) measures knowledge reliability and hallucination. It rewards correct answers, penalizes hallucinations, and has no penalty for refusing to answer. Scores range from -100 to 100, where 0 means as many correct as incorrect answers, and negative scores mean more incorrect than correct. · Evaluation results measured independently by Artificial Analysis Unit: index. Source collected 2026-09-12.	Not reported	Not reported	Not reported	13.67 Reported settings Claude Opus 4.6 (Adaptive Reasoning, Max Effort); Model source: https://artificialanalysis.ai/models/claude-opus-4-6-adaptive	Not reported	Not reported	Not reported	Not reported	2.37 Reported settings Claude Opus 4.6 (Non-reasoning, High Effort); Model source: https://artificialanalysis.ai/models/claude-opus-4-6	Not reported
AA-Omniscience AccuracyArtificial Analysis · 6000 questions; 1 attempt; correct-answer share; GPT-5.6 Luna medium grader Benchmark details AA-Omniscience Accuracy (higher is better) measures the proportion of correctly answered questions out of all questions, regardless of whether the model chooses to answer · Evaluation results measured independently by Artificial Analysis Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	Not reported	46.98% Reported settings Claude Opus 4.6 (Adaptive Reasoning, Max Effort); Model source: https://artificialanalysis.ai/models/claude-opus-4-6-adaptive	Not reported	Not reported	Not reported	Not reported	45.78% Reported settings Claude Opus 4.6 (Non-reasoning, High Effort); Model source: https://artificialanalysis.ai/models/claude-opus-4-6	Not reported
𝜏²-Bench TelecomArtificial Analysis · Artificial Analysis published evaluation; see source for benchmark-specific settings Benchmark details Independently benchmarked by Artificial Analysis · Evaluation results measured independently by Artificial Analysis Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	Not reported	92.11% Reported settings Claude Opus 4.6 (Adaptive Reasoning, Max Effort); Model source: https://artificialanalysis.ai/models/claude-opus-4-6-adaptive	Not reported	Not reported	Not reported	Not reported	84.8% Reported settings Claude Opus 4.6 (Non-reasoning, High Effort); Model source: https://artificialanalysis.ai/models/claude-opus-4-6	Not reported
Terminal-Bench HardArtificial Analysis · Artificial Analysis published evaluation; see source for benchmark-specific settings Benchmark details Independently benchmarked by Artificial Analysis · Evaluation results measured independently by Artificial Analysis Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	Not reported	46.21% Reported settings Claude Opus 4.6 (Adaptive Reasoning, Max Effort); Model source: https://artificialanalysis.ai/models/claude-opus-4-6-adaptive	Not reported	Not reported	Not reported	Not reported	48.48% Reported settings Claude Opus 4.6 (Non-reasoning, High Effort); Model source: https://artificialanalysis.ai/models/claude-opus-4-6	Not reported
ARC-AGI-2ARC Prize · v2 Semi-Private Benchmark details Original public board. Configuration and task coverage may differ; inspect source. Unit: percent. Source collected 2026-09-12.	64.58% Reported settings Claude Opus 4.6 (120K, Low); Source model ID: claude-opus-4-6-thinking-120K-low; 120 tasks	66.25% Reported settings Claude Opus 4.6 (120K, Medium); Source model ID: claude-opus-4-6-thinking-120K-medium; 120 tasks	69.17% Reported settings Claude Opus 4.6 (120K, High); Source model ID: claude-opus-4-6-thinking-120K-high; 120 tasks	68.75% Reported settings Claude Opus 4.6 (120K, Max); Source model ID: claude-opus-4-6-thinking-120K-max; 120 tasks	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
SWE-bench Pro publicScale · mini-swe-agent starred rows Benchmark details Original public board. Configuration and task coverage may differ; inspect source. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	Not reported	Not reported	51.9% Reported settings claude-opus-4-6 (thinking)*; 731 tasks; source date 2026-04-08	Not reported	Not reported	Not reported	Not reported	Not reported
FrontierCode 1.1 · extended-claude-codeCognition · claude-code Benchmark details FrontierCode 1.1; claude-code. Open each result for its exact effort, task subset, metric and protocol details. Unit: percent. Source collected 2026-09-12.	32.93% Reported settings FrontierCode 1.1; extended; 150 tasks; claude-code; source effort low; weighted rubric score, not pass rate; unfair internet runs zeroed by evaluator; flag rate 0.002	38.65% Reported settings FrontierCode 1.1; extended; 150 tasks; claude-code; source effort medium; weighted rubric score, not pass rate; unfair internet runs zeroed by evaluator; flag rate 0.0007	43.67% Reported settings FrontierCode 1.1; extended; 150 tasks; claude-code; source effort high; weighted rubric score, not pass rate; unfair internet runs zeroed by evaluator; flag rate 0.0007	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
FrontierCode 1.1 · main-claude-codeCognition · claude-code Benchmark details FrontierCode 1.1; claude-code. Open each result for its exact effort, task subset, metric and protocol details. Unit: percent. Source collected 2026-09-12.	18.31% Reported settings FrontierCode 1.1; main; 100 tasks; claude-code; source effort low; weighted rubric score, not pass rate; unfair internet runs zeroed by evaluator; flag rate 0.003	23.67% Reported settings FrontierCode 1.1; main; 100 tasks; claude-code; source effort medium; weighted rubric score, not pass rate; unfair internet runs zeroed by evaluator; flag rate 0.001	26.64% Reported settings FrontierCode 1.1; main; 100 tasks; claude-code; source effort high; weighted rubric score, not pass rate; unfair internet runs zeroed by evaluator; flag rate 0.001	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
HLE · text only · Scale official evaluationScale · Scale official evaluation Benchmark details Scale text-only public HLE subset; shares the full HLE family budget; automatic answer judging. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	Not reported	36.24% Reported settings Scale text-only public HLE subset; shares the full HLE family budget; automatic answer judging.; published row 2026-02-17T17:06:06.000Z; reported margin ±2.03 percentage points; Potential contamination warning: This model was evaluated after the public release of HLE, allowing model builder access to the prompts and solutions.	Not reported	Not reported	Not reported	Not reported	19.37% Reported settings Scale text-only public HLE subset; shares the full HLE family budget; automatic answer judging.; published row 2026-02-17T17:06:51.000Z; reported margin ±1.67 percentage points; Potential contamination warning: This model was evaluated after the public release of HLE, allowing model builder access to the prompts and solutions.	Not reported
HLE · full · Scale official evaluationScale · Scale official evaluation Benchmark details Scale full public HLE; 2,500 questions; automatic answer judging; temperature 0 when configurable. Public-set contamination caveats retained per result. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	Not reported	34.44% Reported settings Scale full public HLE; 2,500 questions; automatic answer judging; temperature 0 when configurable. Public-set contamination caveats retained per result.; published row 2026-02-17T17:04:32.000Z; reported margin ±1.86 percentage points; Potential contamination warning: This model was evaluated after the public release of HLE, allowing model builder access to the prompts and solutions.	Not reported	Not reported	Not reported	Not reported	19% Reported settings Scale full public HLE; 2,500 questions; automatic answer judging; temperature 0 when configurable. Public-set contamination caveats retained per result.; published row 2026-02-17T17:05:29.000Z; reported margin ±1.54 percentage points; Potential contamination warning: This model was evaluated after the public release of HLE, allowing model builder access to the prompts and solutions.	Not reported
LiveBench · AMPS Hard · 2026-06-25LiveBench · LiveBench official task evaluation Benchmark details LiveBench 2026-06-25 task snapshot. Task scores stay separate and related tasks share their reviewed family budget. Explicit checkpoint and effort labels only. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	97% Reported settings LiveBench official task evaluation; livebench-2026-06-25-AMPS_Hard; claude-opus-4-6-thinking-auto-high-effort; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
LiveBench · code completion · 2026-06-25LiveBench · LiveBench official task evaluation Benchmark details LiveBench 2026-06-25 task snapshot. Task scores stay separate and related tasks share their reviewed family budget. Explicit checkpoint and effort labels only. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	76.09% Reported settings LiveBench official task evaluation; livebench-2026-06-25-code_completion; claude-opus-4-6-thinking-auto-high-effort; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
LiveBench · code generation · 2026-06-25LiveBench · LiveBench official task evaluation Benchmark details LiveBench 2026-06-25 task snapshot. Task scores stay separate and related tasks share their reviewed family budget. Explicit checkpoint and effort labels only. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	80.28% Reported settings LiveBench official task evaluation; livebench-2026-06-25-code_generation; claude-opus-4-6-thinking-auto-high-effort; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
LiveBench · connections · 2026-06-25LiveBench · LiveBench official task evaluation Benchmark details LiveBench 2026-06-25 task snapshot. Task scores stay separate and related tasks share their reviewed family budget. Explicit checkpoint and effort labels only. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	99.33% Reported settings LiveBench official task evaluation; livebench-2026-06-25-connections; claude-opus-4-6-thinking-auto-high-effort; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
LiveBench · consecutive events · 2026-06-25LiveBench · LiveBench official task evaluation Benchmark details LiveBench 2026-06-25 task snapshot. Task scores stay separate and related tasks share their reviewed family budget. Explicit checkpoint and effort labels only. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	63.47% Reported settings LiveBench official task evaluation; livebench-2026-06-25-consecutive_events; claude-opus-4-6-thinking-auto-high-effort; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
LiveBench · integrals with game · 2026-06-25LiveBench · LiveBench official task evaluation Benchmark details LiveBench 2026-06-25 task snapshot. Task scores stay separate and related tasks share their reviewed family budget. Explicit checkpoint and effort labels only. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	73% Reported settings LiveBench official task evaluation; livebench-2026-06-25-integrals_with_game; claude-opus-4-6-thinking-auto-high-effort; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
LiveBench · javascript · 2026-06-25LiveBench · LiveBench Mini-SWE-Agent, 250-step limit Benchmark details LiveBench 2026-06-25 task snapshot. Task scores stay separate and related tasks share their reviewed family budget. Explicit checkpoint and effort labels only. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	63.64% Reported settings LiveBench Mini-SWE-Agent, 250-step limit; livebench-2026-06-25-javascript; claude-opus-4-6-thinking-auto-high-effort; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
LiveBench · logic with navigation · 2026-06-25LiveBench · LiveBench official task evaluation Benchmark details LiveBench 2026-06-25 task snapshot. Task scores stay separate and related tasks share their reviewed family budget. Explicit checkpoint and effort labels only. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	80% Reported settings LiveBench official task evaluation; livebench-2026-06-25-logic_with_navigation; claude-opus-4-6-thinking-auto-high-effort; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
LiveBench · math comp · 2026-06-25LiveBench · LiveBench official task evaluation Benchmark details LiveBench 2026-06-25 task snapshot. Task scores stay separate and related tasks share their reviewed family budget. Explicit checkpoint and effort labels only. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	95.1% Reported settings LiveBench official task evaluation; livebench-2026-06-25-math_comp; claude-opus-4-6-thinking-auto-high-effort; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
LiveBench · olympiad · 2026-06-25LiveBench · LiveBench official task evaluation Benchmark details LiveBench 2026-06-25 task snapshot. Task scores stay separate and related tasks share their reviewed family budget. Explicit checkpoint and effort labels only. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	92.17% Reported settings LiveBench official task evaluation; livebench-2026-06-25-olympiad; claude-opus-4-6-thinking-auto-high-effort; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
LiveBench · paraphrase · 2026-06-25LiveBench · LiveBench official task evaluation Benchmark details LiveBench 2026-06-25 task snapshot. Task scores stay separate and related tasks share their reviewed family budget. Explicit checkpoint and effort labels only. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	62.82% Reported settings LiveBench official task evaluation; livebench-2026-06-25-paraphrase; claude-opus-4-6-thinking-auto-high-effort; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
LiveBench · plot unscrambling · 2026-06-25LiveBench · LiveBench official task evaluation Benchmark details LiveBench 2026-06-25 task snapshot. Task scores stay separate and related tasks share their reviewed family budget. Explicit checkpoint and effort labels only. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	66.48% Reported settings LiveBench official task evaluation; livebench-2026-06-25-plot_unscrambling; claude-opus-4-6-thinking-auto-high-effort; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
LiveBench · python · 2026-06-25LiveBench · LiveBench Mini-SWE-Agent, 250-step limit Benchmark details LiveBench 2026-06-25 task snapshot. Task scores stay separate and related tasks share their reviewed family budget. Explicit checkpoint and effort labels only. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	50% Reported settings LiveBench Mini-SWE-Agent, 250-step limit; livebench-2026-06-25-python; claude-opus-4-6-thinking-auto-high-effort; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
LiveBench · simplify · 2026-06-25LiveBench · LiveBench official task evaluation Benchmark details LiveBench 2026-06-25 task snapshot. Task scores stay separate and related tasks share their reviewed family budget. Explicit checkpoint and effort labels only. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	59.15% Reported settings LiveBench official task evaluation; livebench-2026-06-25-simplify; claude-opus-4-6-thinking-auto-high-effort; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
LiveBench · spatial · 2026-06-25LiveBench · LiveBench official task evaluation Benchmark details LiveBench 2026-06-25 task snapshot. Task scores stay separate and related tasks share their reviewed family budget. Explicit checkpoint and effort labels only. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	98% Reported settings LiveBench official task evaluation; livebench-2026-06-25-spatial; claude-opus-4-6-thinking-auto-high-effort; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
LiveBench · story generation · 2026-06-25LiveBench · LiveBench official task evaluation Benchmark details LiveBench 2026-06-25 task snapshot. Task scores stay separate and related tasks share their reviewed family budget. Explicit checkpoint and effort labels only. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	66.13% Reported settings LiveBench official task evaluation; livebench-2026-06-25-story_generation; claude-opus-4-6-thinking-auto-high-effort; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
LiveBench · summarize · 2026-06-25LiveBench · LiveBench official task evaluation Benchmark details LiveBench 2026-06-25 task snapshot. Task scores stay separate and related tasks share their reviewed family budget. Explicit checkpoint and effort labels only. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	65.15% Reported settings LiveBench official task evaluation; livebench-2026-06-25-summarize; claude-opus-4-6-thinking-auto-high-effort; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
LiveBench · tablejoin · 2026-06-25LiveBench · LiveBench official task evaluation Benchmark details LiveBench 2026-06-25 task snapshot. Task scores stay separate and related tasks share their reviewed family budget. Explicit checkpoint and effort labels only. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	48.17% Reported settings LiveBench official task evaluation; livebench-2026-06-25-tablejoin; claude-opus-4-6-thinking-auto-high-effort; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
LiveBench · tablereformat · 2026-06-25LiveBench · LiveBench official task evaluation Benchmark details LiveBench 2026-06-25 task snapshot. Task scores stay separate and related tasks share their reviewed family budget. Explicit checkpoint and effort labels only. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	98.04% Reported settings LiveBench official task evaluation; livebench-2026-06-25-tablereformat; claude-opus-4-6-thinking-auto-high-effort; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
LiveBench · theory of mind · 2026-06-25LiveBench · LiveBench official task evaluation Benchmark details LiveBench 2026-06-25 task snapshot. Task scores stay separate and related tasks share their reviewed family budget. Explicit checkpoint and effort labels only. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	82.69% Reported settings LiveBench official task evaluation; livebench-2026-06-25-theory_of_mind; claude-opus-4-6-thinking-auto-high-effort; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
LiveBench · typescript · 2026-06-25LiveBench · LiveBench Mini-SWE-Agent, 250-step limit Benchmark details LiveBench 2026-06-25 task snapshot. Task scores stay separate and related tasks share their reviewed family budget. Explicit checkpoint and effort labels only. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	33.33% Reported settings LiveBench Mini-SWE-Agent, 250-step limit; livebench-2026-06-25-typescript; claude-opus-4-6-thinking-auto-high-effort; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
LiveBench · typos · 2026-06-25LiveBench · LiveBench official task evaluation Benchmark details LiveBench 2026-06-25 task snapshot. Task scores stay separate and related tasks share their reviewed family budget. Explicit checkpoint and effort labels only. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	84% Reported settings LiveBench official task evaluation; livebench-2026-06-25-typos; claude-opus-4-6-thinking-auto-high-effort; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
LiveBench · zebra puzzle · 2026-06-25LiveBench · LiveBench official task evaluation Benchmark details LiveBench 2026-06-25 task snapshot. Task scores stay separate and related tasks share their reviewed family budget. Explicit checkpoint and effort labels only. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	94% Reported settings LiveBench official task evaluation; livebench-2026-06-25-zebra_puzzle; claude-opus-4-6-thinking-auto-high-effort; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
SWE-rebench · 2026-01 · toolsSWE-rebench · SWE-rebench standardized ReAct tools Benchmark details Average resolved rate across repeated runs, not best-of-N success. Disjoint complete calendar months within each model’s tested range; standardized harness and all-language task set. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	51.67% Reported settings SWE-rebench standardized ReAct tools; swe-rebench-2026-01-tools; Claude Opus 4.6-high; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
SWE-rebench · 2026-02 · toolsSWE-rebench · SWE-rebench standardized ReAct tools Benchmark details Average resolved rate across repeated runs, not best-of-N success. Disjoint complete calendar months within each model’s tested range; standardized harness and all-language task set. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	65.26% Reported settings SWE-rebench standardized ReAct tools; swe-rebench-2026-02-tools; Claude Opus 4.6-high; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
SWE-rebench · 2026-03 · toolsSWE-rebench · SWE-rebench standardized ReAct tools Benchmark details Average resolved rate across repeated runs, not best-of-N success. Disjoint complete calendar months within each model’s tested range; standardized harness and all-language task set. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	51.3% Reported settings SWE-rebench standardized ReAct tools; swe-rebench-2026-03-tools; Claude Opus 4.6-high; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
SWE-rebench · 2026-04 · toolsSWE-rebench · SWE-rebench standardized ReAct tools Benchmark details Average resolved rate across repeated runs, not best-of-N success. Disjoint complete calendar months within each model’s tested range; standardized harness and all-language task set. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	43.72% Reported settings SWE-rebench standardized ReAct tools; swe-rebench-2026-04-tools; Claude Opus 4.6-high; checkpoint=claude-opus-4-6	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
Epoch · Chess Puzzles · v1.0.1Epoch AI · Epoch AI Inspect; task 1.0.1; scorer model_extracted_exact_match Benchmark details Epoch AI internal evaluation. Mean accuracy under the published setting; exact task version and scorer stay separate. Related tasks share a family budget. Data by Epoch AI, CC BY. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	Not reported	Not reported	Not reported	17% Reported settings Epoch AI Inspect; task 1.0.1; scorer model_extracted_exact_match; model=claude-opus-4-6_32K; run=amkBg66TZcYjF26HaRAXfs; mean accuracy; https://epoch.ai/data/benchmarks.csv	10% Reported settings Epoch AI Inspect; task 1.0.1; scorer model_extracted_exact_match; model=claude-opus-4-6_64K; run=k5CCeHstJwo5wKpbMFZtfw; mean accuracy; https://epoch.ai/data/benchmarks.csv	Not reported	Not reported	Not reported
Epoch · Chess Puzzles · v1.0.2Epoch AI · Epoch AI Inspect; task 1.0.2; scorer model_extracted_exact_match Benchmark details Epoch AI internal evaluation. Mean accuracy under the published setting; exact task version and scorer stay separate. Related tasks share a family budget. Data by Epoch AI, CC BY. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	13% Reported settings Epoch AI Inspect; task 1.0.2; scorer model_extracted_exact_match; model=claude-opus-4-6_120K; run=EUknGXXh3f2mHtv3dTufLg; mean accuracy; https://epoch.ai/data/benchmarks.csv	Not reported	Not reported
Epoch · Chess Puzzles · v1.1.6Epoch AI · Epoch AI Inspect; task 1.1.6; scorer model_extracted_exact_match Benchmark details Epoch AI internal evaluation. Mean accuracy under the published setting; exact task version and scorer stay separate. Related tasks share a family budget. Data by Epoch AI, CC BY. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	Not reported	14% Reported settings Epoch AI Inspect; task 1.1.6; scorer model_extracted_exact_match; model=claude-opus-4-6_max; run=FF8iU7vP5ecg6PdvDyE7XG; mean accuracy; https://epoch.ai/data/benchmarks.csv	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
Epoch · FrontierMath Tier 4 · v2.0.0Epoch AI · Epoch AI Inspect; task 2.0.0; scorer verification_code Benchmark details Epoch AI internal evaluation. Mean accuracy under the published setting; exact task version and scorer stay separate. Related tasks share a family budget. Data by Epoch AI, CC BY. FrontierMath was developed with OpenAI funding and unequal access to part of the question set; this result is from Epoch's evaluation. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	Not reported	26.83% Reported settings Epoch AI Inspect; task 2.0.0; scorer verification_code; model=claude-opus-4-6_max; run=2hbbp8z6PhB7c2T33os9q5; mean accuracy; https://epoch.ai/data/benchmarks.csv	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
Epoch · FrontierMath Tiers 1–3 · v2.0.0Epoch AI · Epoch AI Inspect; task 2.0.0; scorer verification_code Benchmark details Epoch AI internal evaluation. Mean accuracy under the published setting; exact task version and scorer stay separate. Related tasks share a family budget. Data by Epoch AI, CC BY. FrontierMath was developed with OpenAI funding and unequal access to part of the question set; this result is from Epoch's evaluation. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	Not reported	65.96% Reported settings Epoch AI Inspect; task 2.0.0; scorer verification_code; model=claude-opus-4-6_max; run=kgJ2d6XbKj3dZutDcBYSKU; mean accuracy; https://epoch.ai/data/benchmarks.csv	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
Epoch · GPQA diamond · v1.0.11Epoch AI · Epoch AI Inspect; task 1.0.11; scorer choice Benchmark details Epoch AI internal evaluation. Mean accuracy under the published setting; exact task version and scorer stay separate. Related tasks share a family budget. Data by Epoch AI, CC BY. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	Not reported	88.38% Reported settings Epoch AI Inspect; task 1.0.11; scorer choice; model=claude-opus-4-6_max; run=JcQMgXdZKU54u52B8TGQKp; mean accuracy; https://epoch.ai/data/benchmarks.csv	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
Epoch · GPQA diamond · v1.0.4Epoch AI · Epoch AI Inspect; task 1.0.4; scorer choice Benchmark details Epoch AI internal evaluation. Mean accuracy under the published setting; exact task version and scorer stay separate. Related tasks share a family budget. Data by Epoch AI, CC BY. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	Not reported	Not reported	Not reported	90.53% Reported settings Epoch AI Inspect; task 1.0.4; scorer choice; model=claude-opus-4-6_32K; run=DiXCMhdfhcjaCUSzYWgACy; mean accuracy; https://epoch.ai/data/benchmarks.csv	88.76% Reported settings Epoch AI Inspect; task 1.0.4; scorer choice; model=claude-opus-4-6_64K; run=eB9e2mtd5nRwqdFyLEsz6k; mean accuracy; https://epoch.ai/data/benchmarks.csv	Not reported	Not reported	Not reported
Epoch · Mystery Game Puzzles · v1.0.4 · Tool submissionEpoch AI · Epoch AI Inspect; task 1.0.4; scorer agent_submitted_next_move_scorer Benchmark details Epoch AI internal evaluation. Mean accuracy under the published setting; exact task version and scorer stay separate. Related tasks share a family budget. Data by Epoch AI, CC BY. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	Not reported	25% Reported settings Epoch AI Inspect; task 1.0.4; scorer agent_submitted_next_move_scorer; model=claude-opus-4-6_max; run=64rokFyL2L8Vd4SZVdayCy; mean accuracy; https://epoch.ai/data/benchmarks.csv	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
Epoch · Mystery Game Puzzles · v1.0.4 · Exact moveEpoch AI · Epoch AI Inspect; task 1.0.4; scorer exact_match_next_move_scorer Benchmark details Epoch AI internal evaluation. Mean accuracy under the published setting; exact task version and scorer stay separate. Related tasks share a family budget. Data by Epoch AI, CC BY. Unit: percent. Source collected 2026-09-12.	7% Reported settings Epoch AI Inspect; task 1.0.4; scorer exact_match_next_move_scorer; model=claude-opus-4-6_low; run=JarZHkwUMZ6HuA4ArMNT45; mean accuracy; https://epoch.ai/data/benchmarks.csv	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	15% Reported settings Epoch AI Inspect; task 1.0.4; scorer exact_match_next_move_scorer; model=claude-opus-4-6; run=BbM4xbJcS5sjrzZABGg8K7; mean accuracy; https://epoch.ai/data/benchmarks.csv
Epoch · OTIS Mock AIME 2024-2025 · v1.0.4Epoch AI · Epoch AI Inspect; task 1.0.4; scorer model_extracted_exact_match Benchmark details Epoch AI internal evaluation. Mean accuracy under the published setting; exact task version and scorer stay separate. Related tasks share a family budget. Data by Epoch AI, CC BY. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	Not reported	Not reported	Not reported	93.06% Reported settings Epoch AI Inspect; task 1.0.4; scorer model_extracted_exact_match; model=claude-opus-4-6_32K; run=kZ3VgrQJxfKQ5msjpmSaAz; mean accuracy; https://epoch.ai/data/benchmarks.csv	94.44% Reported settings Epoch AI Inspect; task 1.0.4; scorer model_extracted_exact_match; model=claude-opus-4-6_64K; run=TUPC8VdX4jApFa4MGfNP4t; mean accuracy; https://epoch.ai/data/benchmarks.csv	Not reported	Not reported	Not reported
Epoch · OTIS Mock AIME 2024-2025 · v1.1.6Epoch AI · Epoch AI Inspect; task 1.1.6; scorer model_extracted_exact_match Benchmark details Epoch AI internal evaluation. Mean accuracy under the published setting; exact task version and scorer stay separate. Related tasks share a family budget. Data by Epoch AI, CC BY. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	Not reported	91.11% Reported settings Epoch AI Inspect; task 1.1.6; scorer model_extracted_exact_match; model=claude-opus-4-6_max; run=coxYk5vK5cBhQ7iZohMtA5; mean accuracy; https://epoch.ai/data/benchmarks.csv	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
Epoch · SimpleQA Verified · v1.2.0Epoch AI · Epoch AI Inspect; task 1.2.0; scorer simpleqa_scorer Benchmark details Epoch AI internal evaluation. Mean accuracy under the published setting; exact task version and scorer stay separate. Related tasks share a family budget. Data by Epoch AI, CC BY. Unit: percent. Source collected 2026-09-12.	Not reported	Not reported	Not reported	47% Reported settings Epoch AI Inspect; task 1.2.0; scorer simpleqa_scorer; model=claude-opus-4-6_max; run=85fhMxLaebWtLoi6oLpTbi; mean accuracy; https://epoch.ai/data/benchmarks.csv	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported

What these comparisons mean

Each source reports its own effort labels. Matching labels do not establish equal compute budgets or identical fallback behavior. Open Reported settings to inspect the exact model name, agent and task coverage. Multiple results at one level remain visible rather than selecting the best. Source-reported None or Non-reasoning labels are not treated as evidence that an API supports those settings.

These measurements use their own dated source collection. The leaderboard fits identified configurations jointly; it contains no pooled model ratings. Explicit thinking budgets are separate configurations. Read the methodology.

Download all effort benchmark results · 7,424 results across 240 models · Collected 2026-09-12

Claude Opus 4.6 effort benchmarks

Claude Opus 4.6

Capability score evidence

One configuration, seven capabilities

Agentic

Hard reasoning

Coding

Human pref

Knowledge

Multimodal

Long context