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  1. Introducing ChatGPT - OpenAI

    Nov 30, 2022 · We’ve trained a model called ChatGPT which interacts in a conversational way. The dialogue format makes it possible for ChatGPT to answer followup questions, admit its …

  2. OpenAI

    Learn about ChatGPT Business Search with ChatGPT Talk with ChatGPT Research More

  3. Start using ChatGPT instantly - OpenAI

    Jan 31, 2024 · Starting today, you can use ChatGPT instantly, without needing to sign-up. We're rolling this out gradually, with the aim to make AI accessible to anyone curious about its …

  4. GPT-5 is here - OpenAI

    ChatGPT thinks harder on complex tasks and asks relevant follow-up questions to keep work moving. Every employee can get expert-level results without switching models.

  5. Introducing ChatGPT search - OpenAI

    Oct 31, 2024 · ChatGPT search connects people with original, high-quality content from the web and makes it part of their conversation. By integrating search with a chat interface, users can …

  6. ChatGPT Capabilities Overview - OpenAI Help Center

    Speak naturally with ChatGPT using the mobile app or supported desktop/web platforms. You can have a hands-free conversation, choose your preferred voice, and receive spoken responses.

  7. 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 …

  8. Introducing ChatGPT Atlas - OpenAI

    Oct 21, 2025 · Getting started is easy: when you open Atlas for the first time, sign in to ChatGPT and bring your bookmarks, saved passwords, and browsing history with you by importing them …

  9. News - OpenAI

    Dec 16, 2025 · Stay up to speed on the rapid advancement of AI technology and the benefits it offers to humanity.

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

    May 13, 2024 · In line with our mission, we are focused on advancing AI technology and ensuring it is accessible and beneficial to everyone. Today we are introducing our newest model, …