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GPT 5.3 Codex Spark Timeline - Announcements & Release History | AI Stats
GPT 5.3 Codex Spark
OpenAI
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Model Timeline
12 Feb 2026
Model Released
Model first made available to the public
12 Feb 2026
Model Announced
Model first introduced to the public
05 Feb 2026
GPT 5.3 Codex
Previous version
18 Dec 2025
GPT 5.2 Codex
Previous version
19 Nov 2025
GPT 5.1 Codex Max
Previous version
13 Nov 2025
GPT 5.1 Codex
Previous version
15 Sept 2025
GPT 5 Codex
Previous version
16 May 2025
Codex Mini
Previous version
