OpenAI GPT-5.6 August Update System Card - HealthBench Hard: leaderboard
Metric: Length-Adjusted Score (0-100). Source: deploymentsafety.openai.com. 4 models tracked.
Top models
| # | Model | Score |
|---|---|---|
| 1 | GPT-5.5 Instant | 22.9 |
| 2 | GPT-5.3 Instant | 20.2 |
Interactive version: theaggregate.ai/benchmark?slug=openai-gpt-5-6-august-update-system-card-healthbench-hard · How It Works · Data refreshed daily, snapshot 2026-09-19.