OpenAI GPT-6 Astra Launch - MedChemBench (Internal): leaderboard
OpenAI's internal medicinal-chemistry benchmark (MedChemBench), science and health table of OpenAI's GPT-6 Astra launch post (2026-09-03). Score in percent, higher is better. Claude Fable 5 and 5.1 are omitted because they refuse most questions (footnote 12); only GPT-6 Astra and GPT-5.6 Sol have values.
Metric: Score (%). Source: openai.com. Saturation forecast: Around May 2028. 2 models tracked.
Top models
| # | Model | Score | Overall rank |
|---|---|---|---|
| 1 | GPT-6 Astra | 49.3 | #6 |
| 2 | GPT-5.6 Sol | 47.4 | #22 |
No result here: #3 Claude Opus 5.5, #7 GPT-6.1 Sol, #9 Gemini 4 Argon.
Interactive version: theaggregate.ai/benchmark?slug=openai-gpt-6-astra-launch-medchembench-internal · How It Works · Data refreshed daily, snapshot 2026-11-05.