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    Code Migration

    🏆 Leaderboard

    As of August 20, 2026, Claude Opus 5 is #1 for Code Migration at 57.5%. Ranked by the Code Migration score 43 models in this index have a published Code Migration score. Code Migration leaderboard with live API prices. Code Migration — Vals.ai eval for porting and modernizing existing codebases.

    Updated August 20, 2026282 models33 providers
    Claude Opus 5
    Anthropic · Proprietary
    		57.5%$30.00
    Claude Fable 5
    Anthropic · Proprietary
    		55.1%$60.00
    GPT-5.6 Sol
    OpenAI · Proprietary
    		52.9%$35.00
    Claude Opus 4.8
    Anthropic · Proprietary
    		47.3%$30.00
    GPT-5.5
    OpenAI · Proprietary
    		45.2%$35.00
    Grok 4.6
    xAI · Proprietary
    		44.6%$8.00
    GPT-5.6 Luna
    OpenAI · Proprietary
    		44.5%$1.40
    Claude Sonnet 5
    Anthropic · Proprietary
    		44.4%$12.00
    Claude Opus 4.7
    Anthropic · Proprietary
    		43.9%$30.00
    DeepSeek-V4-Pro-0813OSS
    DeepSeek · Open Source
    		41.5%$5.28
    Claude Sonnet 4.6
    Anthropic · Proprietary
    		39.9%$18.00
    DeepSeek-V4-Flash-0731OSS
    DeepSeek · Open Source
    		38.6%$1.76
    GLM-5.2OSS
    Z AI · Open Source
    		37.9%$5.80
    Grok 4.5
    xAI · Proprietary
    		36.6%$8.00
    GPT-5.6 Terra
    OpenAI · Proprietary
    		36.4%$14.00
    GPT-5.4
    OpenAI · Proprietary
    		35.0%$17.50
    Gemini 3.7 Flash
    Google · Proprietary
    		34.8%$4.50
    Muse Spark 1.1
    Meta · Proprietary
    		31.1%$5.50
    Gemini 3.6 Flash
    Google · Proprietary
    		30.9%$4.50
    Muse Spark 1.2
    Meta · Proprietary
    		29.9%$5.50
    Kimi K2.6OSS
    Moonshot AI · Open Source
    		27.8%$4.93
    Gemini 3.5 Flash
    Google · Proprietary
    		26.8%$10.50
    GLM-5.1OSS
    Z AI · Open Source
    		25.8%$5.80
    Kimi K2.7 CodeOSS
    Moonshot AI · Open Source
    		25.4%$4.93
    Qwen3.8 MaxOSS
    Qwen · Open Source
    		24.0%$8.00
    MiMo-V2.5-ProOSS
    Xiaomi · Open Source
    		21.6%$1.30
    MiniMax M3OSS
    MiniMax · Open Source
    		19.9%$1.50
    Gemini 3.1 Pro
    Google · Proprietary
    		17.3%$17.50
    Kimi K3OSS
    Moonshot AI · Open Source
    		16.1%$18.00
    GPT-5.4 nano
    OpenAI · Proprietary
    		14.5%$1.45
    MiMo-V2.5OSS
    Xiaomi · Open Source
    		14.2%$0.50
    Inkling-SmallOSS
    Thinking Machines · Open Source · via Thinking Machines Lab
    		13.7%$1.50
    Qwen3.7 Max
    Qwen · Proprietary
    		13.1%$5.00
    GPT-5.4 mini
    OpenAI · Proprietary
    		12.9%$5.25
    Qwen3.7-Plus
    Qwen · Proprietary
    		12.9%$1.60
    Qwen3.6 Plus
    Qwen · Proprietary
    		11.1%$3.50
    MiniMax M2.7OSS
    MiniMax · Open Source
    		8.7%$1.50
    Grok 4.3
    xAI · Proprietary
    		6.8%$3.75
    Gemini 3 Flash
    Google · Proprietary
    		6.4%$3.50
    Gemini 3.5 Flash-Lite
    Google · Proprietary
    		6.2%$2.80
    Mistral Medium 3.5OSS
    Mistral · Open Source · via Mistral AI
    		5.1%$9.00
    Nemotron 3 Ultra (550B A55B)OSS
    NVIDIA · Open Source · via OpenRouter
    		4.9%$2.70
    Gemini 3.1 Flash-Lite
    Google · Proprietary
    		4.6%$1.75
    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
    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 Code Migration right now?

    As of August 20, 2026, Claude Opus 5 by Anthropic is #1 for Code Migration at 57.5%. Ranked by the Code Migration score This board also tracks Code Migration. Next on the same board: Claude Fable 5 and GPT-5.6 Sol. This code migration leaderboard ranks models by Code Migration. 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 code migration. Ranked by the Code Migration score Input and output are dollars per million tokens.
    RankModelCode MigrationInput /MOutput /M
    1Claude Opus 557.5%$5.00$25.00
    2Claude Fable 555.1%$10.00$50.00
    3GPT-5.6 Sol52.9%$5.00$30.00
    4Claude Opus 4.847.3%$5.00$25.00
    5GPT-5.545.2%$5.00$30.00
    6Grok 4.644.6%$2.00$6.00
    7GPT-5.6 Luna44.5%$0.20$1.20
    8Claude Sonnet 544.4%$2.00$10.00

    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

    Code Migration FAQ

    Who ranks #1 on the Code Migration leaderboard?

    As of August 20, 2026, Claude Opus 5 by Anthropic ranks #1 on Code Migration at 57.5%. API pricing is $5.00/M input and $25.00/M output.

    What are the top models on Code Migration?

    The current Code Migration ranking as of August 20, 2026 is 1. Claude Opus 5 at 57.5%; 2. Claude Fable 5 at 55.1%; 3. GPT-5.6 Sol at 52.9%.

    Which code migration model is the cheapest?

    MiMo-V2.5 is the cheapest scored model on this code migration leaderboard at $0.17/M input and $0.34/M output ($0.50 blended). Claude Opus 5 still leads Code Migration at 57.5%.

    Should I always pick the #1 Code Migration model?

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

    How often is the Code Migration 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 Code Migration?

    Code Migration — Vals.ai eval for porting and modernizing existing codebases. This page ranks models that have published a Code Migration score, with live API token prices on the same row.

    Where is the Code Migration leaderboard?

    This page is the Code Migration leaderboard. Models are sorted by Code Migration, 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 Code Migration ranking different from the official board?

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