Claude Opus 4.1
Anthropic
anthropic/claude-opus-4.1Claude Opus 4.1 is an incremental upgrade to Claude Opus 4, improving coding accuracy, reasoning, and agentic task performance. It remains Anthropic's top-tier model for complex, high-stakes engineering and analysis work in that generation.
Cost rate
15x
Context
200K
Released
Aug 5, 2025
Input
ImageTextFile
Output
Text
Support
ReasoningTool callingStructured outputs
Best at
The categories where this model ranks highest.