Which AI model scores highest on HealthBench Professional?

GPT-6 Astra by OpenAI holds the best HealthBench Professional (length-adjusted) result among tracked models, at 63.4% (released Sep 3 2026). Higher scores are better on this benchmark.

What are the top 1 models on HealthBench Professional?

1. GPT-6 Astra (OpenAI) — 63.4%.

How many models have a published HealthBench Professional score?

1 tracked model has a published HealthBench Professional (length-adjusted) score. Scores are the figures reported by each lab at that model's release, so this page is a record of results over time rather than a re-run leaderboard.

Health

HealthBench Professionallength-adjusted

The same physician-graded health conversations as HealthBench Professional, scored with an adjustment for how long the answer is — so a model cannot gain by padding its reply. The adjustment moves scores by several points, so these numbers are not interchangeable with the unadjusted ones. Higher is better.

HealthBench Professional length-adjusted

Rankings

Higher is better

GPT-6 Astra

63.4%

HealthBench Professional — frequently asked questions

What is HealthBench Professional?: The same physician-graded health conversations as HealthBench Professional, scored with an adjustment for how long the answer is — so a model cannot gain by padding its reply. The adjustment moves scores by several points, so these numbers are not interchangeable with the unadjusted ones. Higher is better.
Which AI model scores highest on HealthBench Professional?: GPT-6 Astra by OpenAI holds the best HealthBench Professional (length-adjusted) result among tracked models, at 63.4% (released Sep 3 2026). Higher scores are better on this benchmark.
What are the top 1 models on HealthBench Professional?: 1. GPT-6 Astra (OpenAI) — 63.4%.
How many models have a published HealthBench Professional score?: 1 tracked model has a published HealthBench Professional (length-adjusted) score. Scores are the figures reported by each lab at that model's release, so this page is a record of results over time rather than a re-run leaderboard.