Knowledge benchmark
HealthBench (length-adjusted) leaderboard
HealthBench length-adjusted score. Every model the catalog carries a published HealthBench (length-adjusted) value for, ranked by that value.
CategoryKnowledge
MeasureLength-adjusted rubric score
Tasks5,000 multi-turn patient conversations
DifficultyRealistic healthcare conversations
Published byClaude Opus 5 System Card
HealthBench score after applying a verbosity penalty to model responses.
HealthBench (length-adjusted) ranking
1 model with a published HealthBench (length-adjusted) value, ordered by that value, highest first. Models the source has not scored on this benchmark are not listed — they are unmeasured, not last.
| Rank | Model | Provider | Length-adjusted rubric score |
|---|---|---|---|
| 1 |  Claude Opus 5 | Anthropic | 57.8 |
Evidence key: Observed
Rows are ordered by the value Claude Opus 5 System Card published, highest first. The source does not state whether a higher value is the better result, so this page does not either: for a benchmark that measures a rate of failure, read the table from the bottom.