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    FrontierMath Tier 4

    🏆 Leaderboard

    As of August 20, 2026, GPT-5.5 Pro is #1 for FrontierMath Tier 4 at 39.6%. Ranked by the FrontierMath Tier 4 score 40 models in this index have a published FrontierMath Tier 4 score. FrontierMath Tier 4 leaderboard: rank models by FrontierMath Tier 4 next to live API token prices.

    Updated August 20, 2026282 models33 providers
    GPT-5.5 Pro
    OpenAI · Proprietary
    		39.6%$540.00
    GPT-5.5
    OpenAI · Proprietary
    		35.4%$35.00
    Claude Opus 4.8
    Anthropic · Proprietary
    		31.3%$30.00
    GPT-5.4
    OpenAI · Proprietary
    		27.1%$17.50
    Claude Opus 4.7
    Anthropic · Proprietary
    		22.9%$30.00
    Claude Opus 4.6
    Anthropic · Proprietary
    		22.9%$30.00
    GPT-5.2
    OpenAI · Proprietary
    		18.8%$15.75
    Gemini 3 Pro
    Google · Proprietary
    		18.8%$14.00
    Gemini 3.1 Pro
    Google · Proprietary
    		16.7%$17.50
    Kimi K2.6OSS
    Moonshot AI · Open Source
    		14.6%$4.93
    Gemini 3.5 Flash
    Google · Proprietary
    		14.6%$10.50
    GPT-5
    OpenAI · Proprietary
    		12.5%$11.25
    GLM-5.1OSS
    Z AI · Open Source
    		12.5%$5.80
    Qwen3.6 Plus
    Qwen · Proprietary
    		8.3%$3.50
    Claude Sonnet 4.6
    Anthropic · Proprietary
    		8.3%$18.00
    GPT-5.4 nano
    OpenAI · Proprietary
    		6.3%$1.45
    GPT-5 mini
    OpenAI · Proprietary
    		6.3%$2.25
    o3-mini
    OpenAI · Proprietary
    		4.2%$5.50
    GPT-5.1
    OpenAI · Proprietary
    		4.2%$11.25
    Gemini 3 Flash
    Google · Proprietary
    		4.2%$3.50
    Gemini 2.5 Pro
    Google · Proprietary
    		4.2%$11.25
    Gemini 2.5 Flash
    Google · Proprietary
    		4.2%$2.80
    Claude Sonnet 4.5
    Anthropic · Proprietary
    		4.2%$18.00
    Claude Opus 4.5
    Anthropic · Proprietary
    		4.2%$30.00
    Claude Opus 4.1
    Anthropic · Proprietary
    		4.2%$90.00
    GLM-4.6OSS
    Z AI · Open Source
    		2.1%$2.80
    GLM-5OSS
    Z AI · Open Source
    		2.1%$4.20
    o4-mini
    OpenAI · Proprietary
    		2.1%$5.50
    o3
    OpenAI · Proprietary
    		2.1%$10.00
    GPT-5.4 mini
    OpenAI · Proprietary
    		2.1%$5.25
    Gemini 2.5 Pro Preview 06-05
    Google · Proprietary
    		2.1%$11.25
    Claude Haiku 4.5
    Anthropic · Proprietary
    		2.1%$6.00
    Qwen3-235B-A22B-Thinking-2507OSS
    Qwen · Open Source
    		0%$3.30
    GPT-5 nano
    OpenAI · Proprietary
    		0%$0.45
    GPT-4.1
    OpenAI · Proprietary
    		0%$10.00
    GLM-4.7OSS
    Z AI · Open Source
    		0%$2.80
    Claude Sonnet 4
    Anthropic · Proprietary
    		0%$18.00
    Claude Opus 4
    Anthropic · Proprietary
    		0%$90.00
    Claude 3.5 Sonnet
    Anthropic · Proprietary
    		0%$18.00
    Claude 3.5 Sonnet
    Anthropic · Proprietary
    		0%$18.00
    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 3.7 Sonnet
    Anthropic · Proprietary
    		—$18.00
    Claude Fable 5
    Anthropic · Proprietary
    		—$60.00
    Claude Mythos 5
    Anthropic · Proprietary
    		—$60.00
    Claude Mythos Preview
    Anthropic · Proprietary
    		—$60.00
    Claude Opus 5
    Anthropic · Proprietary
    		—$30.00
    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 FrontierMath Tier 4 right now?

    As of August 20, 2026, GPT-5.5 Pro by OpenAI is #1 for FrontierMath Tier 4 at 39.6%. Ranked by the FrontierMath Tier 4 score This board also tracks FrontierMath Tier 4. Next on the same board: GPT-5.5 and Claude Opus 4.8. This frontiermath tier 4 leaderboard ranks models by FrontierMath Tier 4. 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 frontiermath tier 4. Ranked by the FrontierMath Tier 4 score Input and output are dollars per million tokens.
    RankModelFrontierMath Tier 4Input /MOutput /M
    1GPT-5.5 Pro39.6%$60.00$480.00
    2GPT-5.535.4%$5.00$30.00
    3Claude Opus 4.831.3%$5.00$25.00
    4GPT-5.427.1%$2.50$15.00
    5Claude Opus 4.722.9%$5.00$25.00
    6Claude Opus 4.622.9%$5.00$25.00
    7GPT-5.218.8%$1.75$14.00
    8Gemini 3 Pro18.8%$2.00$12.00

    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

    FrontierMath Tier 4 FAQ

    Who ranks #1 on the FrontierMath Tier 4 leaderboard?

    As of August 20, 2026, GPT-5.5 Pro by OpenAI ranks #1 on FrontierMath Tier 4 at 39.6%. API pricing is $60.00/M input and $480.00/M output.

    What are the top models on FrontierMath Tier 4?

    The current FrontierMath Tier 4 ranking as of August 20, 2026 is 1. GPT-5.5 Pro at 39.6%; 2. GPT-5.5 at 35.4%; 3. Claude Opus 4.8 at 31.3%.

    Which frontiermath tier 4 model is the cheapest?

    GPT-5 nano is the cheapest scored model on this frontiermath tier 4 leaderboard at $0.05/M input and $0.40/M output ($0.45 blended). GPT-5.5 Pro still leads FrontierMath Tier 4 at 39.6%.

    Should I always pick the #1 FrontierMath Tier 4 model?

    Not automatically. GPT-5.5 Pro leads FrontierMath Tier 4, but a cheaper scored model can be the better production choice if the quality gap is small. Use the table to weigh FrontierMath Tier 4 against input/output price, context window, and related evals.

    How often is the FrontierMath Tier 4 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 FrontierMath Tier 4?

    FrontierMath Tier 4 is a public LLM eval (the FrontierMath Tier 4 score). This page ranks models that have published a score, next to live API prices.

    Where is the FrontierMath Tier 4 leaderboard?

    This page is the FrontierMath Tier 4 leaderboard. Models are sorted by FrontierMath Tier 4, 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 FrontierMath Tier 4 ranking different from the official board?

    Official eval pages own the methodology. This page keeps the published FrontierMath Tier 4 score next to live API $/M so you can pick a production SKU, not only a trophy number.