Meet Codex for Students. We're offering college students in the U.S. and Canada $100 in Codex credits. Our goal is to support students to learn by building, breaking, and fixing things. chatgpt.com/codex/students
@openai
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OpenAI Monitors 99.9% of Internal Traffic to Detect Anomalies
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Sharing some of the work I've been doing at OpenAI: we now monitor 99.9% of internal coding traffic for misalignment using our most powerful models, reviewing full trajectories to catch suspicious behavior, escalate serious cases quickly, and strengthen our safeguards over time. [Translated from EN to English]
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OpenAI Launches GPT-5.4 mini, Twice as Fast
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GPT-5.4 mini is available today in ChatGPT, Codex, and the API. Optimized for coding, computer use, multimodal understanding, and subagents. And it's 2x faster than GPT-5 mini. https://openai.com/index/introducing-gpt-5-4-mini-and-nano/ [Translated from EN to English]
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OpenAI Podcast Now Available on Spotify Apple and YouTube
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Listen to the OpenAI Podcast on— Spotify open.spotify.com/show/0zojME… Apple podcasts.apple.com/us/podcas… YouTube piped.video/VAzryGwnJW8
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OpenAI advances in healthcare with new models and products
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AI is starting to help solve real issues in healthcare for patients and doctors. OpenAI's Head of Health Dr. Nate Gross and Health AI Research Lead Karan Singhal join @AndrewMayne to discuss how we're building new models and products to meet the world's health needs. [Translated from EN to English]
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Codex Improves Code Review for Developers
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Developers coming from other tools are often impressed by what Codex finds in code review. In this video, @majatrebacz and I show how to set it up and walk through issues Codex finds in real PRs. Included with ChatGPT Plus/Pro (or ~$1/run with credits). [Translated from EN to English]
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OpenAI Acquires Promptfoo to Strengthen Security Testing
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We're acquiring Promptfoo. Their technology will strengthen agentic security testing and evaluation capabilities in OpenAI Frontier. Promptfoo will remain open source under the current license, and we will continue to service and support current customers. openai.com/index/openai-to-acquire-promptfoo/ [Translated from EN to English]
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Codex Security Application Agent Now Available Research Preview
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Codex Security—our application security agent—is now in research preview. openai.com/index/codex-secur…
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GPT-5.4 Thinking CoT Controllability and Safety Monitoring
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We're publishing a new evaluation suite and research paper on Chain-of-Thought (CoT) Controllability. We find that GPT-5.4 Thinking shows low ability to obscure its reasoning—suggesting CoT monitoring remains a useful safety tool.
