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  1. 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 …

  2. OpenAI

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

  3. GPT-4 | OpenAI

    Mar 14, 2023 · GPT-4 is capable of handling over 25,000 words of text, allowing for use cases like long form content creation, extended conversations, and document search and analysis.

  4. 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.

  5. Introducing GPT-4o and more tools to ChatGPT free users

    May 13, 2024 · You can now have voice conversations with ChatGPT directly from your computer, starting with Voice Mode that has been available in ChatGPT at launch, with GPT‑4o’s new audio …

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

    Nov 12, 2025 · We heard clearly from users that great AI should not only be smart, but also enjoyable to talk to. GPT‑5.1 improves meaningfully on both intelligence and communication style. We’re also …

  7. ChatGPT | OpenAI Help Center

    Chat and File Retention Policies in ChatGPT Understand how your chats and files are stored, how long they are retained, and how you can manage or delete them when needed.

  8. ChatGPT can now see, hear, and speak - OpenAI

    Sep 25, 2023 · Chat about images You can now show ChatGPT one or more images. Troubleshoot why your grill won’t start, explore the contents of your fridge to plan a meal, or analyze a complex graph …

  9. What is ChatGPT? - OpenAI Help Center

    ChatGPT is fine-tuned from GPT-3.5, a language model trained to produce text. ChatGPT was optimized for dialogue by using Reinforcement Learning with Human Feedback (RLHF) – a method …

  10. ChatGPT 소개 | OpenAI

    이 과정을 여러 번 반복했습니다. ChatGPT는 2022년 초에 훈련을 마친 GPT‑3.5 시리즈 모델을 파인 튜닝한 버전입니다. 여기 ⁠ 에서 3.5 시리즈에 대한 자세한 내용은 알아볼 수 있습니다. ChatGPT와 …