Month: February 2025

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Introducing GPT-4.5

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.

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Deep research System Card

This report outlines the safety work carried out prior to releasing deep research including external red teaming, frontier risk evaluations according to our Preparedness Framework, and...

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Team Fortress 2 Update Released

An update to Team Fortress 2 has been released. The update will be applied automatically when you restart Team Fortress 2. The major changes include: Added...

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Cleaning up old repositories

Around two years ago, we’ve merged the [community] repository into [extra] as part of the git migration. In order to not break user setups, we kept...

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Sharing the latest Model Spec

We’ve made updates to the Model Spec based on external feedback and our continued research in shaping desired model behavior.

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Introducing the Intelligence Age

We aired our first-ever television ad during the Super Bowl to pique people’s curiosity and help us all realize how AI can open up new possibilities...

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Introducing deep research

An agent that uses reasoning to synthesize large amounts of online information and complete multi-step research tasks for you. Available to Pro users today, Plus and...

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