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OpenAI release timeline

8 releases across 2023 – 2026. Heights show the Artificial Analysis Intelligence Index for each release. The latest is GPT-5.6-sol.

RELEASE TIMELINE · AI MODEL RADAR OpenAI OpenAI · 8 versions · 2023 – 202617355270 3.6GPT-3.5-turboFeb 2023 34.7GPT-5Aug 2025 36.9GPT-5.1Nov 2025 42.2GPT-5.2Dec 2025 44.3GPT-5.3-codexFeb 2026 51.4GPT-5.4Mar 2026 54.8GPT-5.5Apr 2026 58.9GPT-5.6-solJun 2026 aimodelradar.app · Intelligence Index: Artificial Analysis
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