GPT-5.4 Thinking and Pro are rolling out gradually starting today across ChatGPT, the API, and Codex.
@openai
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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.
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GPT-5.3 Instant Rolls Out to ChatGPT Users
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GPT-5.3 Instant in ChatGPT is now rolling out to everyone. More accurate, less cringe.
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Anthropic Rejects Supply Chain Risk Designation from Department of War
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We do not think Anthropic should be designated as a supply chain risk and we’ve made our position on this clear to the Department of War.
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AI Safety Guardrails vs Usage Policies in National Security
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Other AI labs have reduced or removed their safety guardrails and relied primarily on usage policies as their primary safeguards in national security deployments. We think our approach better protects against unacceptable use. In our agreement, we protect our redlines through a
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OpenAI Department of War Agreement Establishes AI Usage Redlines
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Our agreement with the Department of War upholds our redlines: – No use of OpenAI technology for mass domestic surveillance. – No use of OpenAI technology to direct autonomous weapons systems. – No use of OpenAI technology for high-stakes automated decisions (e.g. systems such
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AI Company Reaches Defense Department Agreement for Classified Deployment
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Yesterday we reached an agreement with the Department of War for deploying advanced AI systems in classified environments, which we requested they make available to all AI companies. We think our deployment has more guardrails than any previous agreement for classified AI