GPT-5 on HealthBench Professional
rank 16 of 22 · updated September 8, 2026
GPT-5 scores 0.462 on HealthBench Professional, rank 16 of 22 models on the board. OpenAI's August 2025 flagship, still served at unchanged prices and now three generations back. HealthBench Professional scores models on 525 tasks drawn from real clinician conversations, graded criterion by criterion against physician-written rubrics on a 0 to 1 scale.
Result and API facts
| rank | 16 of 22 |
|---|---|
| score | 0.462 |
| lab | OpenAI |
| context window | 400K tokens |
| API price per 1M tokens | $1.25 in / $10.00 out |
| license | proprietary |
| source | GPT-5.6 System Card (system card) |
| released | 2025-08-07 |
Position in the field
The gap to the leader, Claude Fable 5 at 0.660, is 0.198. Directly above sits GPT-5.4 at 0.481. Directly below sits GPT-5.2 at 0.459. The scores on this page are compiled from published documents rather than from one controlled run, so a small gap between 2 models can reflect a difference in grader version, reasoning effort, or deployment setting as well as a difference in capability.
Source of this score
Read from GPT-5.6 System Card (system card, OpenAI, 2026-07-09). Vendor-reported. Confidence: verified. Configuration: length-adjusted, max reasoning effort, GPT-5.6 system card Table 6 column GPT-5 (51.0 unadjusted, 3616 chars).
HealthBench Professional length-adjusted 46.2 (51.0, 3616) 39.6 (48.0, 4863) 45.9 (50.0, 3400) 48.1 (51.9, 3308) 51.8 (57.2, 3818) 60.5 (64.1, 3228) 57.7 (62.4, 3618) 55.7 (59.8, 3389)
Section 5.1 HealthBench, Table 6 (reported as length-adjusted score (unadjusted, mean response length in characters)), column GPT-5 · 1 corroborating document · full entry on the sources page
What does GPT-5 score on HealthBench Professional?
GPT-5 scores 0.462 on HealthBench Professional, which places it at rank 16 of 22 models on the board as of September 8, 2026. The number was read from GPT-5.6 System Card, listed on the sources page.
How much does GPT-5 cost to run?
GPT-5 is priced at $1.25 per million input tokens and $10.00 per million output tokens through OpenAI's API.
Head to head
Pairings with a dedicated comparison page are linked; every other difference is in the score-difference matrix.
- GPT-5 vs Claude Fable 50.462 vs 0.660 · Claude Fable 5 by 0.198
- GPT-5 vs GPT-6 Astra0.462 vs 0.634 · GPT-6 Astra by 0.172
- GPT-5 vs Claude Fable 5.10.462 vs 0.621 · Claude Fable 5.1 by 0.159
- GPT-5 vs GPT-5.6 Sol0.462 vs 0.605 · GPT-5.6 Sol by 0.143
- GPT-5 vs Claude Opus 50.462 vs 0.598 · Claude Opus 5 by 0.136
- GPT-5 vs Muse Spark 1.10.462 vs 0.593 · Muse Spark 1.1 by 0.131
- GPT-5 vs Claude Sonnet 50.462 vs 0.578 · Claude Sonnet 5 by 0.116
- GPT-5 vs GPT-5.6 Terra0.462 vs 0.577 · GPT-5.6 Terra by 0.115
- GPT-5 vs Claude Opus 4.80.462 vs 0.558 · Claude Opus 4.8 by 0.096
- GPT-5 vs GPT-5.6 Luna0.462 vs 0.557 · GPT-5.6 Luna by 0.095
- GPT-5 vs Muse Spark0.462 vs 0.541 · Muse Spark by 0.079
- GPT-5 vs GPT-5.6 Sol (August)0.462 vs 0.540 · GPT-5.6 Sol (August) by 0.078
- GPT-5 vs Claude Opus 4.70.462 vs 0.519 · Claude Opus 4.7 by 0.057
- GPT-5 vs GPT-5.50.462 vs 0.518 · GPT-5.5 by 0.056
- GPT-5 vs GPT-5.40.462 vs 0.481 · GPT-5.4 by 0.019
- GPT-5 vs GPT-5.20.462 vs 0.459 · GPT-5 by 0.003
- GPT-5 vs Claude Sonnet 4.60.462 vs 0.442 · GPT-5 by 0.020
- GPT-5 vs GPT-5.6 Luna (August)0.462 vs 0.441 · GPT-5 by 0.021
- GPT-5 vs GPT-5.10.462 vs 0.396 · GPT-5 by 0.066
- GPT-5 vs GPT-5.5 Instant0.462 vs 0.384 · GPT-5 by 0.078
- GPT-5 vs MAI-Thinking-10.462 vs 0.350 · GPT-5 by 0.112
Where the scores come from and how they are read is on the methodology page. The full ranking is on the leaderboard.