When was GPT-5-Codex-Mini released?

GPT-5-Codex-Mini was released by OpenAI on Friday, Nov 7 2025.

Who made GPT-5-Codex-Mini?

GPT-5-Codex-Mini was built by OpenAI. Creators of ChatGPT and the GPT series of models. Pioneered large-scale language model research.

Is GPT-5-Codex-Mini open source?

No. GPT-5-Codex-Mini is a proprietary model. The weights are not published — it is available only through the provider's own API, apps, or partner platforms.

What came before and after GPT-5-Codex-Mini?

OpenAI's previous tracked release was GPT-5-Codex on Sep 15 2025, 53 days earlier. It was followed by GPT-5.1 on Nov 12 2025.

GPT-5-Codex-Mini

Released Nov 7 2025

GPT-5-Codex-Mini is an AI model released by OpenAI on Friday, Nov 7 2025, 53 days after GPT-5-Codex.

Compare GPT-5-Codex-Mini with

GPT-5-Codex-Mini

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Frequently asked questions

: GPT-5-Codex-Mini was released by OpenAI on Friday, Nov 7 2025.
: GPT-5-Codex-Mini was built by OpenAI. Creators of ChatGPT and the GPT series of models. Pioneered large-scale language model research.
: No. GPT-5-Codex-Mini is a proprietary model. The weights are not published — it is available only through the provider's own API, apps, or partner platforms.
: OpenAI's previous tracked release was GPT-5-Codex on Sep 15 2025, 53 days earlier. It was followed by GPT-5.1 on Nov 12 2025.