Sonnet 5.5 is available now in the Claude Platform and Claude Code. We granted all Pro, Max, and Team users a reset last Tuesday. If you haven’t used it yet, you can still apply it whenever you want, before Oct 22. https://t.co/5OZYmPGdcK
Announced 2026-09-28 18:36 UTC — rolling out; it can take a while to reach every account