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.

GPT-5 Codex OpenAI o3 OpenAI o4-mini GPT-4o GPT-4o mini Sora Safety Safety Approach Security & Privacy Trust & Transparency ChatGPT Explore ChatGPT Business Enterprise Education Pricing …

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 …

Mar 14, 2023 · On nine categories of internal adversarially-designed factual evals, we compare GPT-4 (green) to the first three ChatGPT versions. There are significant gains across all topics.

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.

May 13, 2024 · We'll roll out a new version of Voice Mode with GPT‑4o in alpha within ChatGPT Plus in the coming weeks. Developers can also now access GPT‑4o in the API as a text and vision model.

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 mistakes, …

Apr 14, 2025 · Introducing GPT-4.1 in the API—a new family of models with across-the-board improvements, including major gains in coding, instruction following, and long-context understanding. …

Jan 10, 2026 · Today we’re launching ChatGPT Enterprise, which offers enterprise-grade security and privacy, unlimited higher-speed GPT-4 access, longer context windows for processing longer inputs, …

Jan 29, 2026 · We’re continuing to make progress toward a version of ChatGPT designed for adults over 18, grounded in the principle of treating adults like adults, and expanding user choice and freedom …