Anthropic on Thursday released Claude Opus 4.6, its most capable model yet, at a moment when the company's AI tools have already spooked markets over fears that they are disrupting traditional software development and other sectors.

The new model improves on Opus 4.5's coding abilities, the company said -- it plans more carefully, sustains longer agentic tasks, handles larger codebases more reliably, and catches its own mistakes through better debugging. It is also the first Opus-class model to feature a 1M token context window, currently in beta.

On GDPval-AA, an independent benchmark measuring performance on knowledge-work tasks in finance, legal and other domains, Opus 4.6 outperformed OpenAI's GPT-5.2 by roughly 144 Elo points. Anthropic also introduced agent teams in Claude Code, allowing multiple agents to work in parallel on tasks like codebase reviews. Pricing remains at $5/$25 per million input/output tokens.