Sep 12, 2025 · OpenAI Developer BlogA year-end roundup of the biggest model, API, and platform shifts for building production-grade agents.

Dec 11, 2025 · Stay up to speed on the rapid advancement of AI technology and the benefits it offers to humanity.

3 days ago · OpenAI for Developers in 2025 A year-end roundup of the biggest model, API, and platform shifts for building production-grade agents.

Sep 11, 2025 · This blog is for OpenAI developers. Anyone developing with the OpenAI platform—the API, our models, or our other developer tools—is encouraged to follow along.

Sep 2, 2025 · Routing sensitive conversations to reasoning models and rolling out Parental Controls within the next month.

Sep 22, 2025 · When we released o1-preview late last year, our Chief Scientist Jakub Pachocki wrote this in our blog: We believe that a hidden chain of thought presents a unique opportunity for …

Dec 15, 2025 · New audio model snapshots and broader access to Custom Voices for production voice apps.

Nov 24, 2025 · At DevDay we introduced ChatGPT Apps — a new way to bring your product directly into ChatGPT conversations. This post builds on that launch with practical guidance for developers, PMs, …

Dec 11, 2025 · Already, the average ChatGPT Enterprise user says ⁠ AI saves them 40–60 minutes a day, and heavy users say it saves them more than 10 hours a week. We designed GPT‑5.2 to unlock …

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.