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AI Model Radar
Vendor timeline

OpenAI release timeline

8 releases across 2023 – 2026. Heights show the Artificial Analysis Intelligence Index for each release. The latest is GPT-5.5.

RELEASE TIMELINE OpenAI OpenAI · 8 versions · 2023 – 2026 7.0GPT-4Jun 2023 19.4GPT-4.1Apr 2025 36.1GPT-5Aug 2025 38.9GPT-5.1Nov 2025 42.2GPT-5.2Dec 2025 44.3GPT-5.3-codexFeb 2026 51.4GPT-5.4Mar 2026 54.8GPT-5.5Apr 2026 INTELLIGENCE INDEX ↑ AI Model Radar aimodelradar.app · Performance: Artificial Analysis
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Anthropic Google OpenAI
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Claude Opus Gemini Flash GPT-5 Gemini Pro Claude Sonnet GPT-4 OpenAI o-series

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