GPT-5 Pro
GPT-5 Pro is an AI model released by OpenAI on Thursday, Aug 7 2025, the same day as GPT-5 nano.
GPT-5 Pro — frequently asked questions
- When was GPT-5 Pro released?
- GPT-5 Pro was released by OpenAI on Thursday, Aug 7 2025.
- Who made GPT-5 Pro?
- GPT-5 Pro was built by OpenAI. Creators of ChatGPT and the GPT series of models. Pioneered large-scale language model research.
- Is GPT-5 Pro open source?
- No. GPT-5 Pro 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 Pro?
- OpenAI's previous tracked release was GPT-5 nano on Aug 7 2025. It was followed by GPT-5-Codex on Sep 15 2025.