OpenAI Blog
Feb 27, 2025
OpenAI GPT-4.5 System Card
We’re releasing a research preview of OpenAI GPT‑4. 5, our largest and most knowledgeable model yet.
Welcome GPT OSS, the new open-source model family from OpenAI!
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We are excited to announce our first office in Asia and we’re releasing a GPT-4 custom model optimized for the Japanese language.
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GPT-5. 2 is our most advanced frontier model for everyday professional work, with state-of-the-art reasoning, long-context understanding, coding, and vision.
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Warp’s big bet on building open source with GPT-5.5
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OpenAI models, Codex, and Managed Agents come to AWS
OpenAI GPT models, Codex, and Managed Agents are now available on AWS, enabling enterprises to build secure AI in their AWS environments.
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How to Work Effectively with GPT-5.6
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May 23, 2025
Addendum to OpenAI o3 and o4-mini system card: OpenAI o3 Operator
We are replacing the existing GPT-4o-based model for Operator with a version based on OpenAI o3. The API version will remain based on 4o.
OpenAI Blog
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Inside OpenAI’s in-house data agent
How OpenAI built an in-house AI data agent that uses GPT-5, Codex, and memory to reason over massive datasets and deliver reliable insights in minutes.