Introducing Claude Opus 4.6

Summary

Anthropic released Claude Opus 4.6 on February 5, 2026, describing it as an upgrade to its most capable model with improved coding skills, longer agentic task execution, and better performance across larger codebases. The model introduces a 1M token context window in beta — a first for Anthropic's Opus-class models — and ships with a new "agent teams" capability in Claude Code that allows multiple Claude instances to work in parallel on a shared codebase without active human intervention. On be