RankingEffort benchmarks

Claude Opus 4.5 effort benchmarks

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

Model

Claude Opus 4.5

65 measured results · 8 reported effort labels · 47 benchmark/harness combinations. Model evidence and sources →

Capability score evidence

Claude Opus 4.5 · Thinking 64K: 29.3 overall comparison score. Meets the overall evidence requirements.

Which sources carry the weight?

LiveBench · 100.0% 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	29.6	+0.3
ARC Prize	30.9	+1.6
Datacurve	26.8	-2.6
LiveCodeBench	29.4	+0.0
Scale	30.5	+1.1
Terminal-Bench	29.6	+0.2
Cognition	31.4	+2.1
LiveBench	Comparison path lost	—
SWE-rebench	28.6	-0.7
Epoch AI	29.9	+0.5
Vals AI	29.1	-0.2
Provider reports · Anthropic	29.3	-0.0
Provider reports · Moonshot AI	29.4	+0.1
Provider reports · Meta	29.1	-0.2
Provider reports · Mistral	29.3	+0.0
All provider reports	29.2	-0.2

Every benchmark family

Removed evidence	Recomputed score	Change
multi-swe-bench	32.9	+3.5
livebench-coding	25.9	-3.5
deepswe	26.8	-2.6
livebench-instructions	31.6	+2.2
frontiercode	31.4	+2.1
livebench-reasoning	31.3	+2.0
livebench-language	27.4	-1.9
livebench-math	27.6	-1.8
arc-agi	30.6	+1.3
mmmu-pro	30.3	+1.0
swe-rebench	28.6	-0.7
terminal-bench	29.8	+0.5
hle	29.8	+0.4
mmlu-pro	29.7	+0.4
livebench-data	29.0	-0.3
epoch-game-puzzles	29.1	-0.3
vals-finance-agent	29.1	-0.2
vibe-code	29.2	-0.2
ifbench	29.2	-0.2
swe-atlas-qna	29.2	-0.2
aime	29.2	-0.2
harvey	29.2	-0.1
frontiermath	29.4	+0.1
tau-bench	29.2	-0.1
simpleqa	29.2	-0.1
enigma-eval	29.4	+0.1
gpqa	29.2	-0.1
gdp-pdf	29.4	+0.1
vals-code-migration	29.4	+0.1
swe-atlas-test-writing	29.3	-0.0
arc-agi-3	29.3	-0.0
briefcase	29.4	+0.0
livecodebench	29.4	+0.0
omniscience	29.3	+0.0
vals-legal-research	29.3	+0.0
vals-excel-modeling	29.3	-0.0
swe-bench-pro	29.3	+0.0
swe-atlas-refactoring	29.3	-0.0
aa-lcr	29.3	-0.0
gmmlu	29.3	+0.0
enterprise-ops	29.3	-0.0
automationbench	29.3	-0.0
math500	29.3	+0.0
gdpval	29.3	+0.0
apex-agents	29.3	-0.0
analyst-agent	29.3	-0.0
itbench	29.3	+0.0
scicode	29.3	+0.0
critpt	29.3	-0.0

What evidence is missing from the fit?

Across all collected settings for this model: 68 observations, 56 contributing, 0 matched without graph weight and 12 excluded. Counts do not establish rank eligibility.

2 · Benchmark family or source protocol has not been reviewed
3 · Effort is not identified
4 · Fewer than two distinct model identities remain in this evaluation
3 · No reviewed effort for this catalog observation; any separately collected effort measurement is counted separately

Inspect every observation and exclusion →

Capability profile

One configuration, seven capabilities

Comparison score · 0–100

AClaude Opus 4.5 · Thinking 64K3 of 7 capabilities supported

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

Agentic
A41.1Preliminary
Hard reasoning
A35.2Supported
Coding
A32.0Supported
Human pref
Unknown
Knowledge
A29.1Supported
Multimodal
Unknown
Long context
Unknown

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	Thinking 64K	Thinking	Thinking 16K	Thinking 32K	Thinking 48K	Reasoning	Non-reasoning	Unspecified
AIME 2025Artificial 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	Not reported	Not reported	91.33% Reported settings Claude Opus 4.5 (Reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5-thinking	62.67% Reported settings Claude Opus 4.5 (Non-reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5	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	Not reported	Not reported	77.33% Reported settings Claude Opus 4.5 (Reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5-thinking	70.67% Reported settings Claude Opus 4.5 (Non-reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5	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	Not reported	Not reported	4.57% Reported settings Claude Opus 4.5 (Reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5-thinking	0.29% Reported settings Claude Opus 4.5 (Non-reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5	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	Not reported	Not reported	91.28% Reported settings Claude Opus 4.5 (Reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5-thinking	90.59% Reported settings Claude Opus 4.5 (Non-reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5	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	Not reported	Not reported	86.57% Reported settings Claude Opus 4.5 (Reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5-thinking	81.01% Reported settings Claude Opus 4.5 (Non-reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5	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	Not reported	Not reported	30.12% Reported settings Claude Opus 4.5 (Reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5-thinking	13.16% Reported settings Claude Opus 4.5 (Non-reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5	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	Not reported	Not reported	57.96% Reported settings Claude Opus 4.5 (Reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5-thinking	42.99% Reported settings Claude Opus 4.5 (Non-reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5	Not reported
LiveCodeBenchArtificial 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	Not reported	Not reported	87.09% Reported settings Claude Opus 4.5 (Reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5-thinking	73.76% Reported settings Claude Opus 4.5 (Non-reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5	Not reported
MMLU-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	Not reported	Not reported	89.45% Reported settings Claude Opus 4.5 (Reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5-thinking	88.92% Reported settings Claude Opus 4.5 (Non-reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5	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	Not reported	Not reported	74.05% Reported settings Claude Opus 4.5 (Reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5-thinking	71.21% Reported settings Claude Opus 4.5 (Non-reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5	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	Not reported	Not reported	14 Reported settings Claude Opus 4.5 (Reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5-thinking	-4.13 Reported settings Claude Opus 4.5 (Non-reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5	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	Not reported	Not reported	46.58% Reported settings Claude Opus 4.5 (Reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5-thinking	40.92% Reported settings Claude Opus 4.5 (Non-reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5	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	Not reported	Not reported	89.47% Reported settings Claude Opus 4.5 (Reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5-thinking	86.26% Reported settings Claude Opus 4.5 (Non-reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5	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	Not reported	Not reported	46.97% Reported settings Claude Opus 4.5 (Reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5-thinking	40.91% Reported settings Claude Opus 4.5 (Non-reasoning); Model source: https://artificialanalysis.ai/models/claude-opus-4-5	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	26.32% Reported settings Scale text-only public HLE subset; shares the full HLE family budget; automatic answer judging.; published row 2025-11-26T20:27:42.000Z; 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	Not reported	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	25.2% 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 2025-11-26T20:23:24.000Z; reported margin ±1.7 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	Not reported	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.	99% Reported settings LiveBench official task evaluation; livebench-2026-06-25-AMPS_Hard; claude-opus-4-5-20251101-thinking-64k-high-effort; checkpoint=claude-opus-4-5-20251101	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.	80.44% Reported settings LiveBench official task evaluation; livebench-2026-06-25-code_completion; claude-opus-4-5-20251101-thinking-64k-high-effort; checkpoint=claude-opus-4-5-20251101	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.	78.87% Reported settings LiveBench official task evaluation; livebench-2026-06-25-code_generation; claude-opus-4-5-20251101-thinking-64k-high-effort; checkpoint=claude-opus-4-5-20251101	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.	99.33% Reported settings LiveBench official task evaluation; livebench-2026-06-25-connections; claude-opus-4-5-20251101-thinking-64k-high-effort; checkpoint=claude-opus-4-5-20251101	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.	79.36% Reported settings LiveBench official task evaluation; livebench-2026-06-25-consecutive_events; claude-opus-4-5-20251101-thinking-64k-high-effort; checkpoint=claude-opus-4-5-20251101	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.	78% Reported settings LiveBench official task evaluation; livebench-2026-06-25-integrals_with_game; claude-opus-4-5-20251101-thinking-64k-high-effort; checkpoint=claude-opus-4-5-20251101	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.	59.09% Reported settings LiveBench Mini-SWE-Agent, 250-step limit; livebench-2026-06-25-javascript; claude-opus-4-5-20251101-thinking-64k-high-effort; checkpoint=claude-opus-4-5-20251101	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.	68% Reported settings LiveBench official task evaluation; livebench-2026-06-25-logic_with_navigation; claude-opus-4-5-20251101-thinking-64k-high-effort; checkpoint=claude-opus-4-5-20251101	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.	95.1% Reported settings LiveBench official task evaluation; livebench-2026-06-25-math_comp; claude-opus-4-5-20251101-thinking-64k-high-effort; checkpoint=claude-opus-4-5-20251101	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.	89.46% Reported settings LiveBench official task evaluation; livebench-2026-06-25-olympiad; claude-opus-4-5-20251101-thinking-64k-high-effort; checkpoint=claude-opus-4-5-20251101	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.	65.67% Reported settings LiveBench official task evaluation; livebench-2026-06-25-paraphrase; claude-opus-4-5-20251101-thinking-64k-high-effort; checkpoint=claude-opus-4-5-20251101	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.	66.45% Reported settings LiveBench official task evaluation; livebench-2026-06-25-plot_unscrambling; claude-opus-4-5-20251101-thinking-64k-high-effort; checkpoint=claude-opus-4-5-20251101	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.	40% Reported settings LiveBench Mini-SWE-Agent, 250-step limit; livebench-2026-06-25-python; claude-opus-4-5-20251101-thinking-64k-high-effort; checkpoint=claude-opus-4-5-20251101	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.	54.95% Reported settings LiveBench official task evaluation; livebench-2026-06-25-simplify; claude-opus-4-5-20251101-thinking-64k-high-effort; checkpoint=claude-opus-4-5-20251101	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.	96% Reported settings LiveBench official task evaluation; livebench-2026-06-25-spatial; claude-opus-4-5-20251101-thinking-64k-high-effort; checkpoint=claude-opus-4-5-20251101	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.	65.85% Reported settings LiveBench official task evaluation; livebench-2026-06-25-story_generation; claude-opus-4-5-20251101-thinking-64k-high-effort; checkpoint=claude-opus-4-5-20251101	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.	63.72% Reported settings LiveBench official task evaluation; livebench-2026-06-25-summarize; claude-opus-4-5-20251101-thinking-64k-high-effort; checkpoint=claude-opus-4-5-20251101	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.	45.92% Reported settings LiveBench official task evaluation; livebench-2026-06-25-tablejoin; claude-opus-4-5-20251101-thinking-64k-high-effort; checkpoint=claude-opus-4-5-20251101	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.	98.04% Reported settings LiveBench official task evaluation; livebench-2026-06-25-tablereformat; claude-opus-4-5-20251101-thinking-64k-high-effort; checkpoint=claude-opus-4-5-20251101	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.	78.85% Reported settings LiveBench official task evaluation; livebench-2026-06-25-theory_of_mind; claude-opus-4-5-20251101-thinking-64k-high-effort; checkpoint=claude-opus-4-5-20251101	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.	20% Reported settings LiveBench Mini-SWE-Agent, 250-step limit; livebench-2026-06-25-typescript; claude-opus-4-5-20251101-thinking-64k-high-effort; checkpoint=claude-opus-4-5-20251101	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.	78% Reported settings LiveBench official task evaluation; livebench-2026-06-25-typos; claude-opus-4-5-20251101-thinking-64k-high-effort; checkpoint=claude-opus-4-5-20251101	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.	77.5% Reported settings LiveBench official task evaluation; livebench-2026-06-25-zebra_puzzle; claude-opus-4-5-20251101-thinking-64k-high-effort; checkpoint=claude-opus-4-5-20251101	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported	Not reported
Epoch · Chess Puzzles · v1.0.0Epoch AI · Epoch AI Inspect; task 1.0.0; 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	12% Reported settings Epoch AI Inspect; task 1.0.0; scorer model_extracted_exact_match; model=claude-opus-4-5-20251101_32K; run=P7kyrA6oQ68tVGHyekP7Qj; mean accuracy; https://epoch.ai/data/benchmarks.csv	Not reported	Not reported	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	Not reported	Not reported	Not reported	Not reported	4% Reported settings Epoch AI Inspect; task 1.1.6; scorer model_extracted_exact_match; model=claude-opus-4-5-20251101; run=2jTRxz7rW3B66a8smtz7Ya; mean accuracy; https://epoch.ai/data/benchmarks.csv
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	4.88% Reported settings Epoch AI Inspect; task 2.0.0; scorer verification_code; model=claude-opus-4-5-20251101_32K; run=azk4theXxAsizmoi2HDD49; mean accuracy; https://epoch.ai/data/benchmarks.csv	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	34.39% Reported settings Epoch AI Inspect; task 2.0.0; scorer verification_code; model=claude-opus-4-5-20251101_32K; run=mS5EwCRZVpvUvJEehPUDZu; mean accuracy; https://epoch.ai/data/benchmarks.csv	Not reported	Not reported	Not reported	Not reported
Epoch · GPQA diamond · v1.0.2Epoch AI · Epoch AI Inspect; task 1.0.2; 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	85.48% Reported settings Epoch AI Inspect; task 1.0.2; scorer choice; model=claude-opus-4-5-20251101_16K; run=cXkPywkhy3NnW992ri73yG; mean accuracy; https://epoch.ai/data/benchmarks.csv	86.05% Reported settings Epoch AI Inspect; task 1.0.2; scorer choice; model=claude-opus-4-5-20251101_32K; run=Kwwo3UFcPDk6iLAeSeeRaa; mean accuracy; https://epoch.ai/data/benchmarks.csv	Not reported	Not reported	Not reported	80.68% Reported settings Epoch AI Inspect; task 1.0.2; scorer choice; model=claude-opus-4-5-20251101; run=mEkZaYpiurQ6TEMAALK3su; mean accuracy; https://epoch.ai/data/benchmarks.csv
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	Not reported	22% Reported settings Epoch AI Inspect; task 1.0.4; scorer agent_submitted_next_move_scorer; model=claude-opus-4-5-20251101_48K; run=k4zGHaXESxFRTRMkyDLZrz; mean accuracy; https://epoch.ai/data/benchmarks.csv	Not reported	Not reported	Not reported
Epoch · OTIS Mock AIME 2024-2025 · 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	81.67% Reported settings Epoch AI Inspect; task 1.0.2; scorer model_extracted_exact_match; model=claude-opus-4-5-20251101_16K; run=SH5jr76ni3RnpXVMETMy2H; mean accuracy; https://epoch.ai/data/benchmarks.csv	86.11% Reported settings Epoch AI Inspect; task 1.0.2; scorer model_extracted_exact_match; model=claude-opus-4-5-20251101_32K; run=ikUWdu6HJ2qRgZynfzDCFe; mean accuracy; https://epoch.ai/data/benchmarks.csv	Not reported	Not reported	Not reported	48.06% Reported settings Epoch AI Inspect; task 1.0.2; scorer model_extracted_exact_match; model=claude-opus-4-5-20251101; run=nSb2focDRMyPJXErk3MV94; mean accuracy; https://epoch.ai/data/benchmarks.csv
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	45.7% Reported settings Epoch AI Inspect; task 1.2.0; scorer simpleqa_scorer; model=claude-opus-4-5-20251101_32K; run=CA5LW4phRnHSsZUGXEm8H6; mean accuracy; https://epoch.ai/data/benchmarks.csv	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 4.5 effort benchmarks

Claude Opus 4.5

Capability score evidence

One configuration, seven capabilities

Agentic

Hard reasoning

Coding

Human pref

Knowledge

Multimodal

Long context