RankingHealthBench Professional · Length-adjusted / Oct4 repeat

HealthBench Professional · Length-adjusted / Oct4 repeat

Data updated 8 Oct 2026

Bucket: Supporting evidence
Unit: percent
Direction: Higher is better
Version: Length-adjusted / Oct4 repeat
Display harness: Claude Haiku 5.5 System Card
Board: https://www-cdn.anthropic.com/e1080d6bf5ae2018ea3c2f414064be03232f5be5/Claude%20Haiku%205.5%20System%20Card.pdf

The available records have no admitted matched comparison in the capability core. Raw results remain available below.

Models

Published configurations retain their source and harness labels. Missing results remain unknown.

1–1 of 1 entries

Model	Score	Harness	Evidence	Source-recorded date
Claude Haiku 5.5Anthropic	64.2% Reported settings & source Safety classifiers enabled; same grader across models; HealthBench/Professional graded with Claude Opus4.8; PhysicianBench with Claude Opus5. Max effort; thirteen repeat runs onOctober4; length-adjusted score, distinct dated rerun. Provider-published lab_self_report; retained as launch evidence, not an independent board admission. Comparison limit: Provider publication; exact benchmark-specific configuration and independent evaluation provenance require separate review before matched-board admission. Claude Haiku 5.5 System Card · section 8.11.3; p.133 · reviewed 2026-10-07	Claude Haiku 5.5 System Card	lab self-report	2026-10-07