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Claude Opus 4.1

AnthropicLanguage modeling/generationQuestion answeringSystem controlCode generationSearchQuantitative reasoningMathematical reasoningVisual question answering

Claude Opus 4.1 is language modeling/generation model published by Anthropic in 2025.

About Claude Opus 4.1

Today we're releasing Claude Opus 4.1, an upgrade to Claude Opus 4 on agentic tasks, real-world coding, and reasoning. We plan to release substantially larger improvements to our models in the coming weeks. Opus 4.1 is now available to paid Claude u

LLM pricing & performance

Full LLM page →

Claude Opus 4.1 is available via API — live cost, context, and benchmark data:

Input / 1M
$15.00
Output / 1M
$75.00
Context
200K
Tokens/sec

Details

Provider
Anthropic
Task
Language modeling/generation,Question answering,System control,Code generation,Search,Quantitative reasoning,Mathematical reasoning,Visual question answering
Released
2025-08-05
Open weights
No
View model source

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