🔥 Claude Opus 4.6: Anthropic upgrades its smartest model for long-horizon agentic work

Anthropic introduces Claude Opus 4.6, an upgraded Opus-class model designed to plan more carefully, sustain agentic tasks for longer, and operate reliably across massive codebases while catching its own mistakes.

What’s new
• Stronger planning & self-correction: Plans before acting and detects errors mid-task
• Built for long agentic runs: Sustains complex, multi-step workflows without drifting
• Massive context window: First Opus model with 1M token context (beta)
• Codebase-native: More reliable reasoning across large, real-world repositories

State-of-the-art performance
• Agentic coding
• Multi-discipline reasoning
• Knowledge work
• Agentic search


Availability
• Live today on claude.ai, the Claude Developer Platform, and all major cloud providers
• In Cowork, Opus 4.6 can operate autonomously, putting its full agentic skillset to work on your behalf

https://www.anthropic.com/news/claude-opus-4-6