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  1. 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 …

  2. Presentamos ChatGPT | OpenAI

    Optimizamos ChatGPT a partir de un modelo de la serie GPT‑3.5, cuyo entrenamiento terminó a principios de 2022. Encontrarás más información sobre la serie 3.5 aquí ⁠.

  3. GPT-4 | OpenAI

    Mar 14, 2023 · Continuous improvement from real-world use We’ve applied lessons from real-world use of our previous models into GPT‑4’s safety research and monitoring system. Like ChatGPT, we’ll be …

  4. Presentamos ChatGPT - OpenAI

    Optimizamos ChatGPT a partir de un modelo de la serie GPT‑3.5, cuyo entrenamiento terminó a principios de 2022. Encontrarás más información sobre la serie 3.5 aquí ⁠ (se abre en una nueva …

  5. 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.

  6. ChatGPT — Release Notes - OpenAI Help Center

    Feb 19, 2026 · Previously, some questions were automatically routed to the Thinking model when ChatGPT determined it might help. To maximize choice, free users will now use GPT-5.2 Instant by …

  7. Introducing ChatGPT Plus - OpenAI

    Feb 1, 2023 · We’re launching a pilot subscription plan for ChatGPT, a conversational AI that can chat with you, answer follow-up questions, and challenge incorrect assumptions.

  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. 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.

  10. Start using ChatGPT instantly | OpenAI

    Jan 31, 2024 · There are many benefits to creating an account including the ability to save and review your chat history, share chats, and unlock additional features like voice conversations and custom …