ReleasedFeb 5, 2026 ·
GPT-5.3 is out
OpenAI shipped GPT-5.3.
OpenAIOpenAI released GPT-5.3 on Feb 5, 2026. The company announced it itself (OpenAI).
It follows GPT-5.2, 56 days earlier. Releases in the OpenAI GPT line usually land about 49 days apart.
GPT-5.4 replaced it on Mar 5, 2026.
“GPT-5.3-Codex System Card”
Released
Feb 5, 2026
Line
OpenAI GPT
Previous
GPT-5.2 (Dec 11, 2025)
Confirmed by
The company's own announcement
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