RankingHealthBench Professional · Length-adjusted

HealthBench Professional · Length-adjusted

Data updated 8 Oct 2026

Bucket: Supporting evidence
Unit: percent
Direction: Higher is better
Version: Length-adjusted
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.

Compare published benchmark results with category weights →

Models

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

1–5 of 5 entries

Model	Score	Harness	Evidence	Source-recorded date
Claude Haiku 5.5Anthropic	57.9% Reported settings & source Safety classifiers enabled; same grader across models; HealthBench/Professional graded with Claude Opus4.8; PhysicianBench with Claude Opus5. low effort. Length-adjusted score; five runs per effort. Low–xhigh onOct4; max onOct1–2. 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 8.11.1–3; pp.131–134 · reviewed 2026-10-07	Claude Haiku 5.5 System Card	lab self-report	2026-10-07
Claude Haiku 5.5Anthropic	59.9% Reported settings & source Safety classifiers enabled; same grader across models; HealthBench/Professional graded with Claude Opus4.8; PhysicianBench with Claude Opus5. medium effort. Length-adjusted score; five runs per effort. Low–xhigh onOct4; max onOct1–2. 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 8.11.1–3; pp.131–134 · reviewed 2026-10-07	Claude Haiku 5.5 System Card	lab self-report	2026-10-07
Claude Haiku 5.5Anthropic	61.3% Reported settings & source Safety classifiers enabled; same grader across models; HealthBench/Professional graded with Claude Opus4.8; PhysicianBench with Claude Opus5. high effort. Length-adjusted score; five runs per effort. Low–xhigh onOct4; max onOct1–2. 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 8.11.1–3; pp.131–134 · reviewed 2026-10-07	Claude Haiku 5.5 System Card	lab self-report	2026-10-07
Claude Haiku 5.5Anthropic	61% Reported settings & source Safety classifiers enabled; same grader across models; HealthBench/Professional graded with Claude Opus4.8; PhysicianBench with Claude Opus5. xhigh effort. Length-adjusted score; five runs per effort. Low–xhigh onOct4; max onOct1–2. 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 8.11.1–3; pp.131–134 · reviewed 2026-10-07	Claude Haiku 5.5 System Card	lab self-report	2026-10-07
Claude Haiku 5.5Anthropic	64.8% Reported settings & source Safety classifiers enabled; same grader across models; HealthBench/Professional graded with Claude Opus4.8; PhysicianBench with Claude Opus5. max effort. Length-adjusted score; five runs per effort. Low–xhigh onOct4; max onOct1–2. 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 8.11.1–3; pp.131–134 · reviewed 2026-10-07	Claude Haiku 5.5 System Card	lab self-report	2026-10-07