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Anthropic

Claude Sonnet release timeline

6 versions across 2024 – 2026. Heights show the Artificial Analysis Intelligence Index for each release. The latest is Claude Sonnet 5.

RELEASE TIMELINE · AI MODEL RADAR Claude Sonnet Anthropic · 6 versions · 2024 – 202611233445 5.93Mar 2024 7.93.5Jun 2024 17.73.7Feb 2025 21.24.5Sep 2025 30.54.6Feb 2026 38.45Jun 2026 aimodelradar.app · Intelligence Index: Artificial Analysis
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Claude Fable Gemini Flash Claude Opus Claude Sonnet GPT-5 Gemini Pro Claude Haiku GPT-4 OpenAI o-series

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