Anthropic Drops Claude Sonnet 4.6 With 1M Token Context Window

Anthropic's newest Sonnet model brings major upgrades to coding and consistency, plus a massive context window in beta.

Anthropic Drops Claude Sonnet 4.6 With 1M Token Context Window

Anthropic just shipped Claude Sonnet 4.6, calling it the most capable Sonnet model to date. The upgrade hits across the board — better coding chops, improved consistency, and enhanced computer use capabilities.

The headline feature? A 1M token context window, currently available in beta. That's a massive amount of text the model can process in a single conversation, opening doors for developers working with large codebases or lengthy documents.

Both Free and Pro users get access, which is notable. Anthropic isn't gating this behind its highest tier.

The release signals Anthropic continuing to push its mid-tier model aggressively. While flagship models like Opus grab headlines, Sonnet is where most users actually live. Making it substantially better at coding and day-to-day tasks matters more for real-world adoption than benchmark bragging rights.