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1. GPT-5.2 derives a new result in theoretical physics

   A new preprint shows GPT-5.2 proposing a new formula for a gluon amplitude, later formally proved and verified by OpenAI and academic collaborators.

2. Introducing Lockdown Mode and Elevated Risk labels in ChatGPT

   Introducing Lockdown Mode and Elevated Risk labels in ChatGPT to help organizations defend against prompt injection and AI-driven data exfiltration.

3. Beyond rate limits: scaling access to Codex and Sora

   How OpenAI built a real-time access system combining rate limits, usage tracking, and credits to power continuous access to Sora and Codex.

4. Scaling social science research

   GABRIEL is a new open-source toolkit from OpenAI that uses GPT to turn qualitative text and images into quantitative data, helping social scientists analyze research at scale.

5. Introducing GPT-5.3-Codex-Spark

   Introducing GPT-5.3-Codex-Spark—our first real-time coding model. 15x faster generation, 128k context, now in research preview for ChatGPT Pro users.

6. Harness engineering: leveraging Codex in an agent-first world

   By Ryan Lopopolo, Member of the Technical Staff

7. Testing ads in ChatGPT

   OpenAI begins testing ads in ChatGPT to support free access, with clear labeling, answer independence, strong privacy protections, and user control.

8. Bringing ChatGPT to GenAI.mil

   OpenAI for Government announces the deployment of a custom ChatGPT on GenAI.mil, bringing secure, safety-forward AI to U.S. defense teams.

9. Making AI work for everyone, everywhere: our approach to localization

   OpenAI shares its approach to AI localization, showing how globally shared frontier models can be adapted to local languages, laws, and cultures without compromising safety.

10. GPT-5 lowers the cost of cell-free protein synthesis

    An autonomous lab combining OpenAI’s GPT-5 with Ginkgo Bioworks’ cloud automation cut cell-free protein synthesis costs by 40% through closed-loop experimentation.