Claude Opus 4.1

Claude Opus 4.1

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.

ConversationReasoningCode GenerationAnalysisAgentic Tool UsePlanning
Provider
Anthropic
Release Date
2025-08-05
Size
XLARGE
Parameters
Not disclosed

Benchmark Performance

Performance metrics on industry standard AI benchmarks that measure capabilities across reasoning, knowledge, and specialized tasks.

SWE-bench Verified

74.5%
View Source

Model Insights

All Model Responses

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