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Anthropic

Claude Opus release timeline

5 versions across 2025 – 2026. Heights show the Artificial Analysis Intelligence Index for each release. The latest is Claude Opus 4.8.

RELEASE TIMELINE Claude Opus Anthropic · 5 versions · 2025 – 2026 33.74.1Aug 2025 40.84.5Nov 2025 43.74.6Feb 2026 53.54.7Apr 2026 55.74.8May 2026 INTELLIGENCE INDEX ↑ AI Model Radar aimodelradar.app · Performance: Artificial Analysis
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Vendors
Anthropic Google OpenAI
Model lines
Claude Opus Gemini Flash GPT-5 Gemini Pro Claude Sonnet GPT-4 OpenAI o-series

Versions on this timeline

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