Claude 4.1 Opus
Anthropic's most advanced model with enhanced capabilities
Claude 4.1 Opus
Anthropic • August 2025
Training Data
Up to mid 2025
Claude 4.1 Opus
August 2025
Parameters
~500 billion
Training Method
Advanced Constitutional AI
Context Window
200,000 tokens
Knowledge Cutoff
July 2025
Key Features
Latest Improvements • Enhanced Performance • Advanced Reasoning
Capabilities
Reasoning: Maximum
Coding: Outstanding (74.5% SWE-bench)
Performance: Peak
What's New in This Version
Enhanced to 74.5% on SWE-bench Verified with improved agentic performance
Anthropic's most advanced model with enhanced capabilities
What's New in This Version
Enhanced to 74.5% on SWE-bench Verified with improved agentic performance
Technical Specifications
Key Features
Capabilities
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