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]
@openai
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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.
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GPT-5.4 Thinking and Pro Launch Across ChatGPT API Codex
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GPT-5.4 Thinking and Pro are rolling out gradually starting today across ChatGPT, the API, and Codex.
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GPT-5.4 Enhanced: Faster, More Factual AI with Thinking Interrupts
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GPT-5.4 is our most factual and efficient model: fewer tokens, faster speed. In ChatGPT, GPT-5.4 Thinking has improved deep web research, better context retention when it thinks for longer—and oh—you can now interrupt the model and add instructions or adjust its direction
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GPT-5.4 Thinking Pro launches with advanced reasoning and agentic capabilities
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GPT-5.4 Thinking and GPT-5.4 Pro are rolling out now in ChatGPT. GPT-5.4 is also now available in the API and Codex. GPT-5.4 brings our advances in reasoning, coding, and agentic workflows into one frontier model.
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GPT-5.3 Instant Delivers Sharper Contextualization and Better Understanding
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GPT-5.3 Instant gives you more accurate answers. When using web search, you also get: – Sharper contextualization – Better understanding of question subtext – More consistent response tone within the chat
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GPT-5.3 Instant Fewer Refusals Preachy Disclaimers
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GPT-5.3 Instant also has fewer unnecessary refusals and preachy disclaimers.