Claude 4 Opus
World's best coding model with multi-hour agentic workflows
Claude 4 Opus
Anthropic • May 2025
Training Data
Up to early 2025
Claude 4 Opus
May 2025
Parameters
~500 billion
Training Method
Constitutional AI
Context Window
200,000 tokens
Knowledge Cutoff
April 2025
Key Features
World's Best Coding • Multi-hour Workflows • Extended Thinking
Capabilities
Coding: Outstanding (72.5% SWE-bench)
Reasoning: Maximum
Persistence: Outstanding
What's New in This Version
World's best coding model with ability to work continuously for several hours
World's best coding model with multi-hour agentic workflows
What's New in This Version
World's best coding model with ability to work continuously for several hours
Technical Specifications
Key Features
Capabilities
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