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RankingGPT-5.6 Terra

GPT-5.6 Terra

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Data updated 22 Oct 2026

61 published benchmark measures · 18 benchmark families contribute across 5 task areas. 5 capability estimates available in the full profile. See all results ↓ · Compare published benchmarks →

Model evidence summary

This profile combines published settings. It is not a runnable configuration or a leaderboard rank. Compare measured configurations →

Performance profile

Capabilities

Adjusted comparison score · 0–100
GPT-5.6 Terra capability radarComparison scores from 0 to 100. Unknown capabilities have no point; lines stop at gaps. Hollow points are preliminary. Exact values and support labels follow the chart.AgenticHard reasoningCodingHuman prefKnowledgeMultimodalLong context50100GPT-5.6 Terra · Agentic: 34.0 · SupportedGPT-5.6 Terra · Hard reasoning: 52.2 · SupportedGPT-5.6 Terra · Coding: 56.3 · SupportedGPT-5.6 Terra · Multimodal: 48.9 · SupportedGPT-5.6 Terra · Long context: 50.9 · Supported

Filled points are supported; hollow points are preliminary. Lines stop at unknown capabilities. Exact values and sources follow below.

Agentic6 families · 0 with independent evidence · Supported34.0

6 core families; 11 direct opponents across 3 labs.

Estimated against the same complete panel: gpt-5.6-sol claude-opus-4-8 gemini-3.1-pro . Indirect comparisons assume performance can be summarized by one strength within this capability.

Refit without one family: 28.4–39.9; 0/13 scenarios unsupported. Without one publisher: 18.8–43.9; 0/15 unsupported. Smoothing check: 31.1–38.7; 0/3 unsupported. These are sensitivity checks, not confidence intervals.

Audit: family and publisher holdouts improved on neutral predictions within evaluated coverage; source sensitivity still requires inspection. Validation audit.

Matched family win shares below describe source evidence; they are not averaged to produce the adjusted score.

Hard reasoning4 families · 1 with independent evidence · Supported52.2

4 core families; 61 direct opponents across 10 labs.

Estimated against the same complete panel: gpt-5.6-sol claude-opus-4-8 gemini-3.1-pro . Indirect comparisons assume performance can be summarized by one strength within this capability.

Refit without one family: 46.3–58.8; 0/6 scenarios unsupported. Without one publisher: 32.6–53.2; 0/16 unsupported. Smoothing check: 51.3–53.0; 0/3 unsupported. These are sensitivity checks, not confidence intervals.

Audit: family and publisher holdouts improved on neutral predictions within evaluated coverage. Validation audit.

Matched family win shares below describe source evidence; they are not averaged to produce the adjusted score.

Coding3 families · 2 with independent evidence · Supported56.3

3 core families; 35 direct opponents across 9 labs.

Estimated against the same complete panel: gpt-5.6-sol claude-opus-4-8 gemini-3.1-pro . Indirect comparisons assume performance can be summarized by one strength within this capability.

Refit without one family: 48.7–66.6; 0/6 scenarios unsupported. Without one publisher: 54.3–60.1; 0/19 unsupported. Smoothing check: 55.2–56.3; 0/3 unsupported. These are sensitivity checks, not confidence intervals.

Audit: family and publisher holdouts improved on neutral predictions within evaluated coverage. Validation audit.

Matched family win shares below describe source evidence; they are not averaged to produce the adjusted score.

Human prefNo comparable evidenceUnknown

0 core families; 0 direct opponents across 0 labs. No admitted core comparisons

Estimated against the same complete panel: gpt-5.6-sol claude-opus-4-8 gemini-3.1-pro . Indirect comparisons assume performance can be summarized by one strength within this capability.

Refit without one family: No supported estimate; 1/1 scenarios unsupported. Without one publisher: No supported estimate; 1/1 unsupported. Smoothing check: No supported estimate; 3/3 unsupported. These are sensitivity checks, not confidence intervals.

Audit: cross-family and cross-publisher predictions could not be evaluated from the available comparison network. Validation audit.

Matched family win shares below describe source evidence; they are not averaged to produce the adjusted score.

    KnowledgeNo comparable evidenceUnknown

    0 core families; 0 direct opponents across 0 labs. No admitted core comparisons

    Estimated against the same complete panel: gpt-5.6-sol claude-opus-4-8 gemini-3.1-pro . Indirect comparisons assume performance can be summarized by one strength within this capability.

    Refit without one family: No supported estimate; 4/4 scenarios unsupported. Without one publisher: No supported estimate; 5/5 unsupported. Smoothing check: No supported estimate; 3/3 unsupported. These are sensitivity checks, not confidence intervals.

    Audit: almost no publisher-held-out comparisons remained estimable. Cross-source validity is unresolved. Validation audit.

    Matched family win shares below describe source evidence; they are not averaged to produce the adjusted score.

      Multimodal3 families · 0 with independent evidence · Supported48.9

      3 core families; 8 direct opponents across 3 labs.

      Estimated against the same complete panel: gpt-5.6-sol claude-opus-4-8 gemini-3.1-pro . Indirect comparisons assume performance can be summarized by one strength within this capability.

      Refit without one family: 46.9–61.5; 0/8 scenarios unsupported. Without one publisher: 35.1–66.8; 1/8 unsupported. Smoothing check: 48.0–49.7; 0/3 unsupported. These are sensitivity checks, not confidence intervals.

      Audit: limited publisher-held-out coverage. Cross-source validity is unresolved. Validation audit.

      Matched family win shares below describe source evidence; they are not averaged to produce the adjusted score.

      Long context2 families · 0 with independent evidence · Supported50.9

      2 core families; 4 direct opponents across 2 labs.

      Estimated against the same complete panel: gpt-5.6-sol claude-opus-4-8 gemini-3.1-pro . Indirect comparisons assume performance can be summarized by one strength within this capability.

      Refit without one family: 50.9–51.5; 2/5 scenarios unsupported. Without one publisher: 50.9–51.7; 2/5 unsupported. Smoothing check: 48.4–53.9; 0/3 unsupported. These are sensitivity checks, not confidence intervals.

      Audit: family and publisher holdouts underperformed neutral predictions. Treat this as an exploratory estimate. Validation audit.

      Matched family win shares below describe source evidence; they are not averaged to produce the adjusted score.

      Scores estimate outcomes against a shared reference panel; they are not accuracy percentages. Sparse or disconnected evidence cannot qualify an overall profile. Open a capability to inspect its evidence.

      Reported effort · Not specified

      Settings reported in this model's published benchmark results, including results outside the aggregate. Effort names are provider-specific. These are not API defaults or equal compute budgets.

      Mixed settings means multiple settings occur in the evidence. Best across efforts means the source selected its best reported result across settings; it does not mean Max. Unspecified settings stay unknown. This model-summary chart combines reported settings. The leaderboard keeps identified configurations separate and excludes unknown effort.

      Inspect each result and its source ↓ · Download effort evidence
      Score contributions and missing evidence

      18 contributing families across 5 capabilities. Fixed reference panels do not change when the catalog expands.

      Capability is fitted jointly across families. Capability estimates below describe different task areas; their weighted sum is not the Capability score.

      Results without reviewed compatibility or a reference match remain in the raw evidence below. Coverage counts only contributing results.

      Model information & shareable badge
      Lab
      OpenAI
      Catalog status
      active
      Availability
      Public provider catalog; account and region restrictions may apply
      Family
      GPT-5.6
      Released
      —
      Context
      1,050,000 tokens
      License
      proprietary
      Model card
      https://developers.openai.com/api/docs/models/all
      Default Capability family coverage
      Documented-evidence family coverage/badge/gpt-5.6-terra.svg
      Benchmark scores & sources

      Original results, evaluation harnesses, and evidence behind this model.

      BenchmarkBucketScoreHarnessEvidenceSource-recorded date
      GDP.PDFAgentic29%
      Reported settings & source

      All-pass rate; allmodels selfcomputed byGoogle

      Gemini3.8Flash Model Card · Model card page5 Results table · reviewed 2026-09-06

      		Published configuration

      Effort: Not specified

      contributes to capability      		lab self-reportReviewed 2026-09-06
      gdp.pdf · not specifiedAgentic24.7%
      Reported settings & source

      Launch table reported configuration; per-cell reasoning effort unspecified

      Provider-published result; comparator measurements are not automatically independently reproduced.

      GPT-5.6: Frontier intelligence that scales with your ambition · Multimodal table / gdp.pdf / GPT‑5.6 Terra · reviewed 2026-09-06

      		Published configuration

      Effort: Not specified

      contributes to capability      		lab self-reportReviewed 2026-09-06
      GDPval-AA · 2Agentic1528
      Reported settings & source

      Artificial Analysis publicboard snapshot; effort as reported

      Gemini3.8Flash Model Card · Model card page5 Results table · reviewed 2026-09-06

      		Published configuration

      Effort: Not specified

      contributes to capability      		lab self-reportReviewed 2026-09-06
      GDPval-AA v2 · v2Agentic1593
      Reported settings & source

      Launch table reported configuration; per-cell reasoning effort unspecified

      Provider-published result; comparator measurements are not automatically independently reproduced.

      GPT-5.6: Frontier intelligence that scales with your ambition · Professional table / GDPval-AA v2 / GPT‑5.6 Terra · reviewed 2026-09-06

      		Published configuration

      Effort: Not specified

      contributes to capability      		lab self-reportReviewed 2026-09-06
      GeneBench Pro · not specifiedSupporting evidence23.3%
      Reported settings & source

      Launch table reported configuration; per-cell reasoning effort unspecified

      Provider-published result; comparator measurements are not automatically independently reproduced.

      GPT-5.6: Frontier intelligence that scales with your ambition · Science And Health table / GeneBench Pro / GPT‑5.6 Terra · reviewed 2026-09-06

      		Published configuration

      Effort: Not specified

      		lab self-report

      Narrow specialist biological, medical or security evaluation; preserved as raw evidence outside general capability scoring.

      		Reviewed 2026-09-06
      GPQA DiamondHard reasoning92.525%GPQA Diamond reported

      Effort: Not specified

      contributes to capability      		independent repro2026-09-21
      GPQA Diamond · not specifiedHard reasoning92.9%
      Reported settings & source

      Launch table reported configuration; per-cell reasoning effort unspecified

      Provider-published result; comparator measurements are not automatically independently reproduced.

      GPT-5.6: Frontier intelligence that scales with your ambition · Academic table / GPQA Diamond / GPT‑5.6 Terra · reviewed 2026-09-06

      		Published configuration

      Effort: Not specified

      contributes to capability      		lab self-reportReviewed 2026-09-06
      GraphWalks BFS 1mil f1 · not specifiedLong context71.2%
      Reported settings & source

      Launch table reported configuration; per-cell reasoning effort unspecified; BFS 1mil f1

      Provider-published result; comparator measurements are not automatically independently reproduced.

      GPT-5.6: Frontier intelligence that scales with your ambition · Long Context table / GraphWalks BFS 1mil f1 / GPT‑5.6 Terra · reviewed 2026-09-06

      		Published configuration

      Effort: Not specified

      contributes to capability      		lab self-reportReviewed 2026-09-06
      GraphWalks BFS 256k f1 · not specifiedLong context76.9%
      Reported settings & source

      Launch table reported configuration; per-cell reasoning effort unspecified; BFS 256k f1

      Provider-published result; comparator measurements are not automatically independently reproduced.

      GPT-5.6: Frontier intelligence that scales with your ambition · Long Context table / GraphWalks BFS 256k f1 / GPT‑5.6 Terra · reviewed 2026-09-06

      		Published configuration

      Effort: Not specified

      contributes to capability      		lab self-reportReviewed 2026-09-06
      Harvey Legal Agent Benchmark · source release snapshot; version not specifiedSupporting evidence0.8%
      Reported settings & source

      Google launch chart; benchmark methodology linked on page; reported comparator settings vary.

      First-party reported result; comparator results retain the source evaluation setup.

      Gemini 3.8 Flash launch performance · Performance table · reviewed 2026-09-06

      		Published configuration

      Effort: Not specified

      		lab self-report

      Supporting evidence outside the reviewed capability core

      		Reviewed 2026-09-06
      HealthBench · not specifiedSupporting evidence57 score (0-100)
      Reported settings & source

      length-adjusted; official HealthBench scoring

      Mean response length 2285 characters. Adjustment centered on2000characters; adjusted and unadjusted values remain distinct configurations.

      GPT-6 Astra System Card · Table6 / HealthBench / gpt-5.6-terra / length-adjusted · reviewed 2026-09-06

      		Published configuration

      Effort: Not specified

      		lab self-report

      Narrow specialist biological, medical or security evaluation; preserved as raw evidence outside general capability scoring.

      		Reviewed 2026-09-06
      HealthBench · not specifiedSupporting evidence58.7 score (0-100)
      Reported settings & source

      unadjusted; official HealthBench scoring

      Mean response length 2285 characters. Adjustment centered on2000characters; adjusted and unadjusted values remain distinct configurations.

      GPT-6 Astra System Card · Table6 / HealthBench / gpt-5.6-terra / unadjusted · reviewed 2026-09-06

      		Published configuration

      Effort: Not specified

      		lab self-report

      Narrow specialist biological, medical or security evaluation; preserved as raw evidence outside general capability scoring.

      		Reviewed 2026-09-06
      HealthBench Consensus · not specifiedSupporting evidence95.1 score (0-100)
      Reported settings & source

      length-adjusted; official HealthBench scoring

      Mean response length 2247 characters. Adjustment centered on2000characters; adjusted and unadjusted values remain distinct configurations.

      GPT-6 Astra System Card · Table6 / HealthBench Consensus / gpt-5.6-terra / length-adjusted · reviewed 2026-09-06

      		Published configuration

      Effort: Not specified

      		lab self-report

      Narrow specialist biological, medical or security evaluation; preserved as raw evidence outside general capability scoring.

      		Reviewed 2026-09-06
      HealthBench Consensus · not specifiedSupporting evidence95.2 score (0-100)
      Reported settings & source

      unadjusted; official HealthBench scoring

      Mean response length 2247 characters. Adjustment centered on2000characters; adjusted and unadjusted values remain distinct configurations.

      GPT-6 Astra System Card · Table6 / HealthBench Consensus / gpt-5.6-terra / unadjusted · reviewed 2026-09-06

      		Published configuration

      Effort: Not specified

      		lab self-report

      Narrow specialist biological, medical or security evaluation; preserved as raw evidence outside general capability scoring.

      		Reviewed 2026-09-06
      HealthBench Hard · not specifiedSupporting evidence32.7 score (0-100)
      Reported settings & source

      length-adjusted; official HealthBench scoring

      Mean response length 2199 characters. Adjustment centered on2000characters; adjusted and unadjusted values remain distinct configurations.

      GPT-6 Astra System Card · Table6 / HealthBench Hard / gpt-5.6-terra / length-adjusted · reviewed 2026-09-06

      		Published configuration

      Effort: Not specified

      		lab self-report

      Narrow specialist biological, medical or security evaluation; preserved as raw evidence outside general capability scoring.

      		Reviewed 2026-09-06
      HealthBench Hard · not specifiedSupporting evidence34.3 score (0-100)
      Reported settings & source

      unadjusted; official HealthBench scoring

      Mean response length 2199 characters. Adjustment centered on2000characters; adjusted and unadjusted values remain distinct configurations.

      GPT-6 Astra System Card · Table6 / HealthBench Hard / gpt-5.6-terra / unadjusted · reviewed 2026-09-06

      		Published configuration

      Effort: Not specified

      		lab self-report

      Narrow specialist biological, medical or security evaluation; preserved as raw evidence outside general capability scoring.

      		Reviewed 2026-09-06
      HealthBench Professional · not specifiedSupporting evidence57.7%
      Reported settings & source

      Launch table reported configuration; per-cell reasoning effort unspecified; official paper scoring; length-adjusted

      Provider-published result; comparator measurements are not automatically independently reproduced.

      GPT-5.6: Frontier intelligence that scales with your ambition · Science And Health table / HealthBench Professional / GPT‑5.6 Terra · reviewed 2026-09-06

      		Published configuration

      Effort: Not specified

      		lab self-report

      Narrow specialist biological, medical or security evaluation; preserved as raw evidence outside general capability scoring.

      		Reviewed 2026-09-06
      HealthBench Professional · not specifiedSupporting evidence57.7 score (0-100)
      Reported settings & source

      length-adjusted; official HealthBench scoring

      Mean response length 3618 characters. Adjustment centered on2000characters; adjusted and unadjusted values remain distinct configurations.

      GPT-6 Astra System Card · Table6 / HealthBench Professional / gpt-5.6-terra / length-adjusted · reviewed 2026-09-06

      		Published configuration

      Effort: Not specified

      		lab self-report

      Narrow specialist biological, medical or security evaluation; preserved as raw evidence outside general capability scoring.

      		Reviewed 2026-09-06
      HealthBench Professional · not specifiedSupporting evidence62.4 score (0-100)
      Reported settings & source

      unadjusted; official HealthBench scoring

      Mean response length 3618 characters. Adjustment centered on2000characters; adjusted and unadjusted values remain distinct configurations.

      GPT-6 Astra System Card · Table6 / HealthBench Professional / gpt-5.6-terra / unadjusted · reviewed 2026-09-06

      		Published configuration

      Effort: Not specified

      		lab self-report

      Narrow specialist biological, medical or security evaluation; preserved as raw evidence outside general capability scoring.

      		Reviewed 2026-09-06
      HLE-Verified · source release snapshot; version not specifiedHard reasoning51.1%
      Reported settings & source

      Google launch chart; benchmark methodology linked on page; reported comparator settings vary.

      First-party reported result; comparator results retain the source evaluation setup.

      Gemini 3.8 Flash launch performance · Performance table · reviewed 2026-09-06

      		Published configuration

      Effort: Not specified

      contributes to capability      		lab self-reportReviewed 2026-09-06
      Humanity's Sixth SenseSupporting evidence22.7%HSS · max

      Effort: max

      Reported settings

      Full 522-task pass@1, task mean of three attempts; every rubric criterion must pass. 95% task-cluster bootstrap CI. Claude-Opus-5 judge. Scale AI + Elorian. Unversioned board; source hashes identify captures. Display only. Excluded from weighted Overall. Source-recorded date is the capture date, not a proven evaluation date.

      		official board

      Supporting evidence outside the reviewed capability core

      		2026-10-22
      Internal Research Debugging Evaluation · not specifiedSupporting evidence67.8%
      Reported settings & source

      Launch table reported configuration; per-cell reasoning effort unspecified

      Provider-published result; comparator measurements are not automatically independently reproduced.

      GPT-5.6: Frontier intelligence that scales with your ambition · Self-Improvement table / Internal Research Debugging Evaluation / GPT‑5.6 Terra · reviewed 2026-09-06

      		Published configuration

      Effort: Not specified

      		lab self-report

      Composite index or publisher-specific internal evaluation lacks a stable general-capability comparison unit.

      		Reviewed 2026-09-06
      KernelGen 1P · not specifiedSupporting evidence49.2%
      Reported settings & source

      Launch table reported configuration; per-cell reasoning effort unspecified

      Provider-published result; comparator measurements are not automatically independently reproduced.

      GPT-5.6: Frontier intelligence that scales with your ambition · Self-Improvement table / KernelGen 1P / GPT‑5.6 Terra · reviewed 2026-09-06

      		Published configuration

      Effort: Not specified

      		lab self-report

      Supporting evidence outside the reviewed capability core

      		Reviewed 2026-09-06
      LABBench · 2Supporting evidence81.2%
      Reported settings & source

      Selfcomputed; Linuxterminal,bioinfotools,Python,R,network; macroaverage11subtasks

      Gemini3.8Flash Model Card · Model card page5 Results table · reviewed 2026-09-06

      		Published configuration

      Effort: Not specified

      		lab self-report

      Narrow specialist biological, medical or security evaluation; preserved as raw evidence outside general capability scoring.

      		Reviewed 2026-09-06
      LifeSciBench · not specifiedSupporting evidence56%
      Reported settings & source

      Launch table reported configuration; per-cell reasoning effort unspecified

      Provider-published result; comparator measurements are not automatically independently reproduced.

      GPT-5.6: Frontier intelligence that scales with your ambition · Science And Health table / LifeSciBench / GPT‑5.6 Terra · reviewed 2026-09-06

      		Published configuration

      Effort: Not specified

      		lab self-report

      Narrow specialist biological, medical or security evaluation; preserved as raw evidence outside general capability scoring.

      		Reviewed 2026-09-06