Which model leads HealthBench Professional (raw)?

Q: Which model leads HealthBench Professional (raw)?

Claude Fable 5.1 tops the board at 74.2

HealthBench Professional (raw) Leaderboard — Model Scores

Pro Mode — raw scores, one benchmark under the lensofficial card harness

The field · 6 measured

60.374.2

6 models measured, most on the official card harness. Claude Fable 5.1 tops the board at 74.2.

6 measured·Lifecycle Updated Oct 9, 2026Score basis

#◆Vendor$/M in$/M out

Leader — ignites whiteField — fill cools with scoreIndependently verified only0 of 6Bars show 60.3–74.2 · ◆ solid = first-party or better · outlined = arm's-length

01Claude Fable 5.1Anthropic74.2$10.0/M$50.0/M$0.404

02Claude Opus 5+1 altAnthropic73.4$5.0/M$25.0/M$0.204

03Claude Mythos 5Anthropic70.3$10.0/M$50.0/M$0.427

04Claude Fable 5Anthropic68.9$10.0/M$50.0/M$0.435

05Claude Sonnet 5+1 altAnthropic62.4$2.0/M$10.0/M$0.096

06Claude Opus 4.8Anthropic60.3$5.0/M$25.0/M$0.249

◆ solid = independently verified · aggregator attested · vendor attributed — outlined = cross-reference · source-attributed. Dimmed ◆ = confidence inferred. “+N alts” = alternate disclosures in the drawer with why-demoted. Prices per million tokens; $/point = input price ÷ score. Every row opens its model dossier.

Verification: 6 models scored · 0 independently verified · 6 vendor-reported · 0 with source disagreement. How these tiers are assigned