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    HealthBench Professional

    🏆 Leaderboard

    As of August 20, 2026, Claude Fable 5 is #1 for HealthBench Professional at 66%. Ranked by the HealthBench Professional score 9 models in this index have a published HealthBench Professional score. HealthBench Professional leaderboard: rank models by HealthBench Professional next to live API token prices.

    Updated August 20, 2026282 models33 providers
    Claude Mythos 5
    Anthropic · Proprietary
    		66%$60.00
    Claude Fable 5
    Anthropic · Proprietary
    		66%$60.00
    GPT-5.6 Sol
    OpenAI · Proprietary
    		60.5%$35.00
    Claude Opus 5
    Anthropic · Proprietary
    		59.8%$30.00
    Claude Sonnet 5
    Anthropic · Proprietary
    		57.8%$12.00
    GPT-5.6 Terra
    OpenAI · Proprietary
    		57.7%$14.00
    Claude Opus 4.8
    Anthropic · Proprietary
    		55.8%$30.00
    GPT-5.6 Luna
    OpenAI · Proprietary
    		55.7%$1.40
    GPT-5.5 Instant
    OpenAI · Proprietary
    		38.4%$35.00
    ChatGPT-4o Latest
    OpenAI · Proprietary
    		—$12.50
    Claude 3 Haiku
    Anthropic · Proprietary
    		—$1.50
    Claude 3 Opus
    Anthropic · Proprietary
    		—$90.00
    Claude 3 Sonnet
    Anthropic · Proprietary
    		—$18.00
    Claude 3.5 Haiku
    Anthropic · Proprietary
    		—$4.80
    Claude 3.5 Sonnet
    Anthropic · Proprietary
    		—$18.00
    Claude 3.5 Sonnet
    Anthropic · Proprietary
    		—$18.00
    Claude 3.7 Sonnet
    Anthropic · Proprietary
    		—$18.00
    Claude Haiku 4.5
    Anthropic · Proprietary
    		—$6.00
    Claude Mythos Preview
    Anthropic · Proprietary
    		—$60.00
    Claude Opus 4
    Anthropic · Proprietary
    		—$90.00
    Claude Opus 4.1
    Anthropic · Proprietary
    		—$90.00
    Claude Opus 4.5
    Anthropic · Proprietary
    		—$30.00
    Claude Opus 4.6
    Anthropic · Proprietary
    		—$30.00
    Claude Opus 4.7
    Anthropic · Proprietary
    		—$30.00
    Claude Sonnet 4
    Anthropic · Proprietary
    		—$18.00
    Claude Sonnet 4.5
    Anthropic · Proprietary
    		—$18.00
    Claude Sonnet 4.6
    Anthropic · Proprietary
    		—$18.00
    Command A+OSS
    Cohere · Open Source
    		—$12.50
    Command R+OSS
    Cohere · Open Source
    		—$1.25
    Composer 2
    Cursor · Proprietary
    		—$3.00
    Composer 2 Fast
    Cursor · Proprietary
    		—$9.00
    DeepSeek R1 Distill Llama 70BOSS
    DeepSeek · Open Source
    		—$0.50
    DeepSeek R1 Distill Qwen 32BOSS
    DeepSeek · Open Source
    		—$0.30
    DeepSeek-R1OSS
    DeepSeek · Open Source
    		—$2.74
    DeepSeek-R1-0528OSS
    DeepSeek · Open Source
    		—$2.74
    DeepSeek-V2.5OSS
    DeepSeek · Open Source
    		—$0.42
    DeepSeek-V3OSS
    DeepSeek · Open Source
    		—$1.37
    DeepSeek-V3 0324OSS
    DeepSeek · Open Source
    		—$1.42
    DeepSeek-V3.1OSS
    DeepSeek · Open Source
    		—$1.27
    DeepSeek-V3.2OSS
    DeepSeek · Open Source · via OpenRouter
    		—$0.57
    DeepSeek-V3.2 (Non-thinking)OSS
    DeepSeek · Open Source
    		—$0.70
    DeepSeek-V3.2-ExpOSS
    DeepSeek · Open Source
    		—$0.68
    DeepSeek-V4-Flash-0423OSS
    DeepSeek · Open Source
    		—$0.30
    DeepSeek-V4-Flash-0731OSS
    DeepSeek · Open Source
    		—$1.76
    DeepSeek-V4-Flash-MaxOSS
    DeepSeek · Open Source
    		—$0.42
    DeepSeek-V4-Pro-0813OSS
    DeepSeek · Open Source
    		—$5.28
    DeepSeek-V4-Pro-MaxOSS
    DeepSeek · Open Source
    		—$5.22
    Devstral Medium
    Mistral · Proprietary · via Mistral AI
    		—$2.40
    Devstral Small 1.1OSS
    Mistral · Open Source · via Mistral AI
    		—$0.40
    ERNIE 4.5
    Baidu · Proprietary
    		—$4.40
    Showing 1–50 of 282 models

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    The index

    All Large Language Models

    282 models across 33 providers. Search or jump to a lab — every model page stays linked here.

    OpenAI51Anthropic22Google25Cursor2xAI15DeepSeek16MiniMax6Qwen38AI21 Labs2Amazon5Baidu1ByteDance2Cohere3IBM1Inception1inclusionAI1LG AI Research1Meituan4Meta12Microsoft5Mistral23Moonshot AI9Nous Research1NVIDIA5Poolside2Sakana AI1StepFun1Tencent1Thinking Machines1Unisound1Upstage1Xiaomi3Z AI20

    Baidu

    1 models
    ERNIE 4.5

    Inception

    1 models
    Mercury 2

    inclusionAI

    1 models
    Ling-3.0-flash

    LG AI Research

    1 models
    K-EXAONE-236B-A23B

    Nous Research

    1 models
    Hermes 3 70B

    Sakana AI

    1 models
    Sakana Namazu

    StepFun

    1 models
    Step-3.5-Flash

    Tencent

    1 models
    Hy3

    Thinking Machines

    1 models
    Inkling-Small

    Unisound

    1 models
    U2

    Upstage

    1 models
    Solar Pro 4

    Which model leads HealthBench Professional right now?

    As of August 20, 2026, Claude Fable 5 by Anthropic is #1 for HealthBench Professional at 66%. Ranked by the HealthBench Professional score This board also tracks HealthBench Professional. Next on the same board: Claude Mythos 5 and GPT-5.6 Sol. This healthbench professional leaderboard ranks models by HealthBench Professional. Scores come from public evals. Prices are the live API rates in the table above.

    Sources: OpenAI API pricing (https://developers.openai.com/api/docs/pricing); Anthropic Claude API pricing (https://platform.claude.com/docs/en/about-claude/pricing); Gemini API pricing (https://ai.google.dev/gemini-api/docs/pricing)

    Top 8 for healthbench professional. Ranked by the HealthBench Professional score Input and output are dollars per million tokens.
    RankModelHealthBench ProfessionalInput /MOutput /M
    1Claude Fable 566%$10.00$50.00
    2Claude Mythos 566%$10.00$50.00
    3GPT-5.6 Sol60.5%$5.00$30.00
    4Claude Opus 559.8%$5.00$25.00
    5Claude Sonnet 557.8%$2.00$10.00
    6GPT-5.6 Terra57.7%$2.00$12.00
    7Claude Opus 4.855.8%$5.00$25.00
    8GPT-5.6 Luna55.7%$0.20$1.20

    Related LLM leaderboards

    LLM LeaderboardCodingMathAgenticReasoningWritingScienceFinanceLong ContextVisionOpen Source

    Individual benchmark pages

    Rank one eval at a time. All LLM benchmarks.

    HLESWE BenchHumanity's Last Exam (No Tools)Humanity's Last Exam (With Tools)Terminal-Bench 2.0Terminal-BenchTerminal-Bench 2.1Terminal-Bench 2Terminal-Bench 3.0ARC-AGI-1 Verified

    HealthBench Professional FAQ

    Who ranks #1 on the HealthBench Professional leaderboard?

    As of August 20, 2026, Claude Fable 5 by Anthropic ranks #1 on HealthBench Professional at 66%. API pricing is $10.00/M input and $50.00/M output.

    What are the top models on HealthBench Professional?

    The current HealthBench Professional ranking as of August 20, 2026 is 1. Claude Fable 5 at 66%; 2. Claude Mythos 5 at 66%; 3. GPT-5.6 Sol at 60.5%.

    Which healthbench professional model is the cheapest?

    GPT-5.6 Luna is the cheapest scored model on this healthbench professional leaderboard at $0.20/M input and $1.20/M output ($1.40 blended). Claude Fable 5 still leads HealthBench Professional at 66%.

    Should I always pick the #1 HealthBench Professional model?

    Not automatically. Claude Fable 5 leads HealthBench Professional, but a cheaper scored model can be the better production choice if the quality gap is small. Use the table to weigh HealthBench Professional against input/output price, context window, and related evals.

    How often is the HealthBench Professional leaderboard updated?

    Scores and API prices on this page are refreshed from published evals and provider rates. The snapshot is labeled August 20, 2026. Treat it as a current index, not a one-off blog post.

    What is HealthBench Professional?

    HealthBench Professional is a public LLM eval (the HealthBench Professional score). This page ranks models that have published a score, next to live API prices.

    Where is the HealthBench Professional leaderboard?

    This page is the HealthBench Professional leaderboard. Models are sorted by HealthBench Professional, with input and output token prices on the same row so you can weigh score against cost. Official boards often omit price; that comparison is the point of this index.

    How is this HealthBench Professional ranking different from the official board?

    Official eval pages own the methodology. This page keeps the published HealthBench Professional score next to live API $/M so you can pick a production SKU, not only a trophy number.