GPT-5 nano
GPT-5 nano is an AI model released by OpenAI on Thursday, Aug 7 2025, the same day as GPT-5 mini.
GPT-5 nano — frequently asked questions
- When was GPT-5 nano released?
- GPT-5 nano was released by OpenAI on Thursday, Aug 7 2025.
- Who made GPT-5 nano?
- GPT-5 nano was built by OpenAI. Creators of ChatGPT and the GPT series of models. Pioneered large-scale language model research.
- Is GPT-5 nano open source?
- No. GPT-5 nano 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 nano?
- OpenAI's previous tracked release was GPT-5 mini on Aug 7 2025. It was followed by GPT-5 Pro on Aug 7 2025.