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.
Input
Output
Context
200K
Max Output
32K
Parameters
—
Technical Specifications
Model TypeChat
Context Window200K
Max Output Tokens32K
Parameters—
Training Cutoff2025-03-01
Licenseproprietary
Capabilities
Input Modalities
imagetextfile
Output Modalities
text
Features
agenticcomputer_useextended_thinkingfunction_callingjson_modepdf_readingreasoningstreamingsystem_promptstext_generationtool_usevision
Benchmarks
#36
Rank (Text)
1366
Arena Score (Text)
26,141
Votes (Text)
#27
Rank (Vision)
1212
Arena Score (Vision)
3,089
Votes (Vision)
Resources & Links
proprietary — Proprietary - API access only
Related Tools
Data sourced from official provider APIs and documentation
Last updated: May 5, 2026
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