Agent Startup Bench

    🏆 Leaderboard

    As of August 20, 2026, Seed 2.1 Turbo is #1 for Agent Startup Bench at 54%. Ranked by the Agent Startup Bench score 1 models in this index have a published Agent Startup Bench score. Agent Startup Bench leaderboard: rank models by Agent Startup Bench next to live API token prices.

    Updated August 20, 2026282 models33 providers
    Seed 2.1 Turbo
    ByteDance · Proprietary
    54%$3.00
    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 Fable 5
    Anthropic · Proprietary
    $60.00
    Claude Haiku 4.5
    Anthropic · Proprietary
    $6.00
    Claude Mythos 5
    Anthropic · Proprietary
    $60.00
    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 Opus 4.8
    Anthropic · Proprietary
    $30.00
    Claude Opus 5
    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
    Claude Sonnet 5
    Anthropic · Proprietary
    $12.00
    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
    Gemini 1.0 Pro
    Google · Proprietary
    $2.00
    Gemini 1.5 Flash
    Google · Proprietary
    $0.75
    Gemini 1.5 Flash 8B
    Google · Proprietary
    $0.37
    Showing 150 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.

    Baidu

    1 models

    Inception

    1 models

    inclusionAI

    1 models

    LG AI Research

    1 models

    Nous Research

    1 models

    Sakana AI

    1 models

    StepFun

    1 models

    Tencent

    1 models

    Thinking Machines

    1 models

    Unisound

    1 models

    Upstage

    1 models

    Which model leads Agent Startup Bench right now?

    As of August 20, 2026, Seed 2.1 Turbo by ByteDance is #1 for Agent Startup Bench at 54%. Ranked by the Agent Startup Bench score This board also tracks Agent Startup Bench. This agent startup bench leaderboard ranks models by Agent Startup Bench. 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 1 for agent startup bench. Ranked by the Agent Startup Bench score Input and output are dollars per million tokens.
    RankModelAgent Startup BenchInput /MOutput /M
    1Seed 2.1 Turbo54%$0.50$2.50

    Agent Startup Bench FAQ

    Who ranks #1 on the Agent Startup Bench leaderboard?

    As of August 20, 2026, Seed 2.1 Turbo by ByteDance ranks #1 on Agent Startup Bench at 54%. API pricing is $0.50/M input and $2.50/M output.

    Which agent startup bench model is the cheapest?

    Seed 2.1 Turbo currently leads Agent Startup Bench and is also the cheapest scored model on this page, at $0.50/M input and $2.50/M output ($3.00 blended).

    Should I always pick the #1 Agent Startup Bench model?

    Not automatically. Seed 2.1 Turbo leads Agent Startup Bench, but a cheaper scored model can be the better production choice if the quality gap is small. Use the table to weigh Agent Startup Bench against input/output price, context window, and related evals.

    How often is the Agent Startup Bench 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 Agent Startup Bench?

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

    Where is the Agent Startup Bench leaderboard?

    This page is the Agent Startup Bench leaderboard. Models are sorted by Agent Startup Bench, 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 Agent Startup Bench ranking different from the official board?

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