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SwapClaude Opus 5.5
Anthropic's new Claude Opus 5.5 writes text and answers questions, offered to developers and paying users, not free to download.
Release page →MiMo-V2.6-Pro
Xiaomi, the phone maker, released its new top AI model, built for demanding work and available through an online service for developers.
Release page →The basics
Released
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Knowledge cutoff
The latest events it learned about
Download
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Combined test score
Epoch Capabilities Index · Epoch AI
Only Claude Opus 5.5 is in this ranking.
Chat answers, by people's votes
LMArena text, adjusted for style · LMArena
In blind votes, people pick Claude Opus 5.5 over MiMo-V2.6-Pro about 54% of the time.
Building apps, by people's votes
LMArena WebDev · LMArena
In blind votes, people pick Claude Opus 5.5 over MiMo-V2.6-Pro about 75% of the time.
Green marks the better of the two on each row, red the other. Rows where one side isn't listed, or where the gap is too close to call, stay plain.
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Rankings from LMArena and Epoch AI, both CC BY 4.0, updated . Developer prices, context windows and knowledge cutoffs from the labs' own listings on models.dev and from OpenRouter. The app links go to each maker's own app when no source says exactly where the model is available.