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Claude Opus 4 Timeline - Announcements & Release History | AI Stats

Claude Opus 4

Claude Opus 4

Claude Opus 4

Anthropic

Overview Timeline Benchmarks Providers Quickstart Performance

Model Timeline

05 Aug 2025

Claude Opus 4.1

Future version

21 May 2025

Model Released

Model first made available to the public

21 May 2025

Model Announced

Model first introduced to the public

04 Mar 2024

Previous version