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GPT 5.3 Chat Timeline - Announcements & Release History | AI Stats

GPT 5.3 Chat

GPT 5.3 Chat

GPT 5.3 Chat

OpenAI

Overview Family Timeline Benchmarks Providers Quickstart Performance

Model Timeline

03 Mar 2026

Model Released

Model first made available to the public

03 Mar 2026

Model Announced

Model first introduced to the public

11 Dec 2025

Previous version

13 Nov 2025

Previous version

07 Aug 2025

Previous version

13 May 2024

Previous version