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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. 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. OpenAI

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

  4. 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.

  5. 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 ⁠.

  6. Introducing GPT‑4.5 - OpenAI

    Feb 27, 2025 · We’re releasing a research preview of GPT‑4.5—our largest and best model for chat yet. GPT‑4.5 is a step forward in scaling up pre-training and post-training.

  7. Empieza a utilizar ChatGPT al instante | OpenAI

    Feb 15, 2024 · Crear una cuenta tiene muchos beneficios, como la posibilidad de guardar y revisar el historial de chats, compartir chats y desbloquear funciones adicionales como conversaciones de voz …

  8. 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.

  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. 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 …