ReleasedNov 24, 2025 · Nov 24, 2025

Claude Opus 4.5 is out

Anthropic shipped Claude Opus 4.5.

Anthropic released Claude Opus 4.5 on Nov 24, 2025. The company announced it itself (Anthropic).

It follows Claude Opus 4.1, 111 days earlier. Releases in the Claude Opus line usually land about 60 days apart.

Claude Opus 4.6 replaced it on Feb 5, 2026.

“Introducing Claude Opus 4.5”
Anthropic

Released

Nov 24, 2025

Line

Claude Opus

Claude Opus 4.1 (Aug 5, 2025)

Confirmed by

The company's own announcement

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