Anthropic: Claude Opus 4.1
Anthropicllm
Published August 5, 2025
About
Claude Opus 4.1 is an updated version of Anthropic’s flagship model, offering improved performance in coding, reasoning, and agentic tasks. It achieves 74.5% on SWE-bench Verified and shows notable gains in multi-file code refactoring, debugging precision, and detail-oriented reasoning. The model supports extended thinking up to 64K tokens and is optimized for tasks involving research, data analysis, and tool-assisted reasoning.
Try Anthropic: Claude Opus 4.1
Test this model in the Sandbase Playground with your own prompts.
Open in PlaygroundRelated Models
Anthropic: Claude 3 HaikuAnthropicllmAnthropic: Claude 3.5 HaikuAnthropicllmAnthropic: Claude 3.7 SonnetAnthropicllmAnthropic: Claude 3.7 Sonnet (thinking)AnthropicllmAnthropic: Claude Fable 5AnthropicllmAnthropic: Claude Haiku 4.5AnthropicllmAnthropic: Claude Opus 4AnthropicllmAnthropic: Claude Opus 4.5Anthropicllm