Events Forum of Claude by Anthropic

Read more about Meet Claude Fable 5.2

Available Major Update

Meet Claude Fable 5.2

Our frontier model for technical work

Nov 9, 2026 — Dec 5, 2026

Read more about Meet Claude Opus 5.5

Available Major Update

Meet Claude Opus 5.5

Our most capable Opus, and a better collaborator.

Nov 3, 2026 — Dec 1, 2026

Read more about Meet Claude Sonnet 5.5

Event Ended Major Update

Meet Claude Sonnet 5.5

A smarter, more efficient Sonnet

Sep 28, 2026 — Oct 16, 2026

Read more about Meet Claude Opus 5.5

Event Ended Major Update

Meet Claude Opus 5.5

Our most capable Opus, and a better collaborator.

Sep 23, 2026 — Oct 23, 2026

Read more about Claude Opus 5

Event Ended Major Update

Tackle your most ambitious work

Jul 24, 2026 — Aug 7, 2026

Read more about Claude Fable 5.1 is here

Event Ended Major Update

Claude Fable 5.1 is here

Our wisest model yet

Sep 1, 2026 — Sep 30, 2026

Read more about Claude Fable 5

Event Ended Major Update

Solve hard problems with fewer check-ins

Jul 2, 2026 — Aug 2, 2026

Read more about Talk to Claude.

Event Ended Major Update

Talk to Claude.

No tapping required.

Feb 20, 2026 — Mar 23, 2026

Read more about Introducing Claude Sonnet 4.5

Event Ended Major Update

Introducing Claude Sonnet 4.5

The AI assistant that encourages you to think more

Sep 29, 2025 — Oct 30, 2025