Claude Opus 4.6 Anthropic

Anthropic continues to push heavily into automated coding.

The new Claude Opus 4.6 improves on its predecessor’s coding skills. It plans more carefully, sustains agentic tasks for longer, can operate more reliably in larger codebases, and has better code review and debugging skills to catch its own mistakes. And, in a first for our Opus-class models, Opus 4.6 features a 1M token context window in beta.

The 1 million token context window is a big deal. Programming has always required you to keep a large amount of "state" in your mind as you create, and for LLMs this shows up as context. Larger context windows allow you to solve more complex problems.