AI News — March 13, 2026

Anthropic made 1 million token context windows generally available for both Claude Opus 4.6 and Sonnet 4.6, removing the previous waitlist. This enables processing entire codebases, large document sets, or extended multi-turn agent conversations in a single context window. A significant capability unlock for developers building with large-context retrieval and long-running agents.

Today's stories:

• 1M context is now generally available for Opus 4.6 and Sonnet 4.6 (Claude Blog) — Anthropic made 1 million token context windows generally available for both Claude Opus 4.6 and Sonnet 4.6, removing the previous waitlist. This enables processing entire codebases, large document sets, or extended multi-turn agent conversations in a single context window. A significant capability unlock for developers building with large-context retrieval and long-running agents.