RankingGPQA Diamond · not specified

GPQA Diamond · not specified

Data updated 12 Sept 2026

Bucket
Hard reasoning
Unit
percent
Direction
Higher is better
Version
not specified
Display harness
GPT-6 Astra: A new generation of intelligence
Board
https://openai.com/index/gpt-6-astra/

Compare published benchmark results with category weights →

Models

ModelScoreHarnessEvidenceSource-recorded date
GPT-6 AstraOpenAI96%
Reported settings & source

Maximum reported across reasoning efforts; OpenAI research environment or API

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

GPT-6 Astra: A new generation of intelligence · Academic table / GPQA Diamond / GPT‑6 Astra · reviewed 2026-09-06

GPT-6 Astra: A new generation of intelligencelab self-report2026-09-06
Gemini 3.8 FlashGoogle95.3%
Reported settings & source

Maximum reported across reasoning efforts; OpenAI research environment or API

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

GPT-6 Astra: A new generation of intelligence · Academic table / GPQA Diamond / Gemini 3.8 Flash · reviewed 2026-09-06

GPT-6 Astra: A new generation of intelligencelab self-report2026-09-06
GPT-5.6 SolOpenAI94.6%
Reported settings & source

Maximum reported across reasoning efforts; OpenAI research environment or API

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

GPT-6 Astra: A new generation of intelligence · Academic table / GPQA Diamond / GPT‑5.6 Sol · reviewed 2026-09-06

GPT-6 Astra: A new generation of intelligencelab self-report2026-09-06
Claude Fable 5.1Anthropic93.7%
Reported settings & source

Maximum reported across reasoning efforts; OpenAI research environment or API

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

GPT-6 Astra: A new generation of intelligence · Academic table / GPQA Diamond / Claude Fable 5.1 · reviewed 2026-09-06

GPT-6 Astra: A new generation of intelligencelab self-report2026-09-06
Claude Opus 5Anthropic93.7%
Reported settings & source

Maximum reported across reasoning efforts; OpenAI research environment or API

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

GPT-6 Astra: A new generation of intelligence · Academic table / GPQA Diamond / Claude Opus 5 · reviewed 2026-09-06

GPT-6 Astra: A new generation of intelligencelab self-report2026-09-06
Claude Fable 5Anthropic92.6%
Reported settings & source

Maximum reported across reasoning efforts; OpenAI research environment or API

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

GPT-6 Astra: A new generation of intelligence · Academic table / GPQA Diamond / Claude Fable 5 · reviewed 2026-09-06

GPT-6 Astra: A new generation of intelligencelab self-report2026-09-06
Claude Fable 5Anthropic92.6%
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 / Claude Fable 5 · reviewed 2026-09-06

GPT-5.6: Frontier intelligence that scales with your ambitionlab self-report2026-09-06
Claude Opus 4.8Anthropic92%
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 / Claude Opus 4.8 · reviewed 2026-09-06

GPT-5.6: Frontier intelligence that scales with your ambitionlab self-report2026-09-06
Gemini 3.1 ProGoogle94.3%
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 · Academic table / GPQA Diamond / Gemini 3.1 Pro Preview · reviewed 2026-09-06

GPT-5.6: Frontier intelligence that scales with your ambitionlab self-report2026-09-06
GPT-5.5OpenAI93.6%
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‑5.5 · reviewed 2026-09-06

GPT-5.6: Frontier intelligence that scales with your ambitionlab self-report2026-09-06
GPT-5.6 LunaOpenAI92.3%
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 · Academic table / GPQA Diamond / GPT‑5.6 Luna · reviewed 2026-09-06

GPT-5.6: Frontier intelligence that scales with your ambitionlab self-report2026-09-06
GPT-5.6 SolOpenAI94.6%
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 Sol · reviewed 2026-09-06

GPT-5.6: Frontier intelligence that scales with your ambitionlab self-report2026-09-06
GPT-5.6 TerraOpenAI92.9%
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

GPT-5.6: Frontier intelligence that scales with your ambitionlab self-report2026-09-06
GPT-6 AstraOpenAI94.9%
Reported settings & source

Lower-cost setting; exact effort not specified

Provider-published result; preserves source setting without claiming a controlled cross-provider comparison.

GPT-6 Astra: A new generation of intelligence · GPQA Diamond chart caption · reviewed 2026-09-06

GPT-6 Astra: A new generation of intelligencelab self-report2026-09-06