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OpenAI

Is GPT-5.3-Codex out? Yes, since February 5, 2026

Yes. GPT-5.3-Codex was released on February 5, 2026.

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Have you used it? GPT-5.3-Codex

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Release date
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OpenAI · GPT-5.3-Codex

What changed

  • context 400k tokens · Context window of GPT-5.3-Codex. GPT-5.2-Codex is the previous model of the same tier, but the gap is beyond what a percentage explains.
  • price $1.75 / MTok · Prompt price of GPT-5.3-Codex. GPT-5.2-Codex is the previous model of the same tier, but the gap is beyond what a percentage explains.

About GPT-5.3-Codex

GPT-5.3-Codex is OpenAI’s most advanced agentic coding model, combining the frontier software engineering performance of GPT-5.2-Codex with the broader reasoning and professional knowledge capabilities of GPT-5.2. It achieves state-of-the-art results...

Next GPT model to watch

Questions

When was GPT-5.3-Codex released?
GPT-5.3-Codex was released on February 5, 2026.
Who makes GPT-5.3-Codex?
GPT-5.3-Codex is made by OpenAI.
What comes after GPT-5.3-Codex?
GPT-5.4, released on March 5, 2026.