5 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 · We’re launching a new home for technical deep dives, notes on releases, and best practices for developers building with OpenAI. A place for our engineers to talk directly to you …

Feb 27, 2025 · We believe our research will eventually lead to artificial general intelligence, a system that can solve human-level problems. Building safe and beneficial AGI is our mission.

Sep 22, 2025 · How the Responses API unlocks persistent reasoning, hosted tools, and multimodal workflows for GPT-5.

Dec 15, 2025 · Whether you’re building a customer support agent or a brand avatar, OpenAI’s custom voice technology makes it easy to create distinct, realistic voices. Theese new speech …

Sep 15, 2025 · Codex just got faster, more reliable, and better at real-time collaboration and tackling tasks independently anywhere you develop—whether via the terminal, IDE, web, or …

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Oct 10, 2025 · Learn how Codex helped us build experiences, demos, products, and more

Sep 12, 2025 · Data residency must be explicitly enabled for an organization and accessed through https://eu.api.openai.com. Tracing The Realtime API logs traces to the developer …

Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform.