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GPQA Diamond (Epoch AI runs)

198 graduate-level biology, physics and chemistry questions that non-experts cannot look up. Run by Epoch AI.
Epoch AI
GPT-6 Astra
#1 right now
95.8%
Accuracy
100
Models ranked
Sep 2, 2026
Board published

Ranking

Best variant per model, as published. Higher is better.

  1. 1
    GPT-6 Astra
    as “gpt-6-astra_max
    95.8%
  2. 2
    Gemini 3.8 Flash
    as “gemini-3.8-flash_high
    95.4%
  3. 3
    Gemini 3.7 Flash
    as “gemini-3.7-flash_high
    94.8%
  4. 4
    GPT-5.4 Pro
    as “gpt-5.4-pro-2026-03-05_xhigh
    94.6%
  5. 5
    Gemini 3.1 Pro Preview
    as “gemini-3.1-pro-preview_high
    94.4%
  6. 6
    Gemini 3.6 Flash
    as “gemini-3.6-flash_high
    94.1%
  7. 7
    GPT-5.5 Pre Release
    as “gpt-5.5-pre-release_xhigh
    94.0%
  8. 7
    Grok 4.6
    as “grok-4.6_high
    94.0%
  9. 9
    GPT-5.5 Pro Pre Release
    as “gpt-5.5-pro-pre-release_xhigh
    93.9%
  10. 10
    Claude Opus 5
    as “claude-opus-5_max
    93.9%
  11. 11
    GPT-5.6 Sol
    as “gpt-5.6-sol_max
    93.5%
  12. 12
    Grok 4.5
    as “grok-4.5_high
    93.4%
  13. 13
    GPT-5.6 Terra
    as “gpt-5.6-terra_max
    93.3%
  14. 14
    GPT-5.4
    as “gpt-5.4-2026-03-05_xhigh
    93.3%
  15. 15
    Kimi K3
    as “kimi-k3_max
    93.1%
  16. 16
    Gemini 3.5 Flash
    as “gemini-3.5-flash_high
    92.8%
  17. 17
    Qwen3.8 Max (0902)
    as “qwen3.8-max_xhigh
    92.7%
  18. 18
    Gemini 3 Pro
    as “gemini-3-pro-preview
    92.6%
  19. 19
    GLM-5.2
    as “glm-5.2_max
    91.9%
  20. 20
    DeepSeek V4 Pro 0813
    as “deepseek-v4-pro-0813_max
    91.7%
  21. 21
    GPT-5.6 Luna
    as “gpt-5.6-luna_max
    91.6%
  22. 22
    GPT-5.2
    as “gpt-5.2-2025-12-11_xhigh
    91.4%
  23. 23
    Claude Opus 4.8
    as “claude-opus-4-8_max
    91.0%
  24. 23
    DeepSeek V4 Flash Vision
    as “deepseek-v4-flash-0731_max
    91.0%
  25. 25
    GLM-5.3
    as “glm-5.3_max
    90.9%

Rank over time

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Scores as published by Epoch AI on the capture date (2026-09-24). Source: epoch.ai benchmark data (CC BY).

epoch.ai/benchmarks/gpqa-diamond

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