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  1. GPT‑5 is here - OpenAI

    GPT‑5 produces higher-quality responses by using your company’s files and connected apps like Google Drive, SharePoint, and more, while respecting existing permissions.

  2. Introducing ChatGPT - OpenAI

    Nov 30, 2022 · We performed several iterations of this process. ChatGPT is fine-tuned from a model in the GPT‑3.5 series, which finished training in early 2022. You can learn more about the 3.5 series …

  3. Introducing GPT‑5.2 - OpenAI

    Dec 11, 2025 · GPT-5.2 is our most advanced frontier model for everyday professional work, with state-of-the-art reasoning, long-context understanding, coding, and vision. Use it in ChatGPT and the …

  4. Introducing GPT‑5 - OpenAI

    Aug 7, 2025 · GPT‑5 is the new default in ChatGPT, replacing GPT‑4o, OpenAI o3, OpenAI o4-mini, GPT‑4.1, and GPT‑4.5 for signed-in users. Just open ChatGPT and type your question; GPT‑5 …

  5. GPT‑5.1: A smarter, more conversational ChatGPT - OpenAI

    Nov 12, 2025 · We’re upgrading the GPT-5 series with warmer, more capable models and new ways to customize ChatGPT’s tone and style. GPT-5.1 starts rolling out today to paid users.

  6. Using GPT-5.2 | OpenAI API

    Learn about how to use and migrate to GPT-5.2 and the GPT-5 model family, the latest models in the OpenAI API.

  7. GPT-5.2 Model | OpenAI API

    Not supported Video Not supported ... v1/chat/completions ... v1/responses Realtime v1/realtime

  8. ChatGPT — Release Notes - OpenAI Help Center

    Feb 13, 2026 · GPT-5.2 Instant is a fast yet powerful workhorse for everyday work and learning, with clear improvements in info-seeking questions, how-tos and walk-throughs, technical writing, and …

  9. OpenAI

    Our Research Research Index Research Overview Research Residency OpenAI for Science Economic Research Latest Advancements GPT-5 Codex OpenAI o3 OpenAI o4-mini GPT-4o GPT-4o mini …

  10. GPT-5.2 in ChatGPT - OpenAI Help Center

    As of February 13, 2026, models GPT-4o, GPT-4.1, GPT-4.1 mini, OpenAI o4-mini, and GPT-5 (Instant and Thinking) have been retired from ChatGPT and are no longer available.