OpenAI announced two new models, GPT‑5.4 Thinking and GPT‑5.4 Pro, aimed at enterprise workloads and AI agents. The "thinking" model trades speed for higher accuracy, reducing hallucinations by 18% for overall errors and 33% for false claims compared with GPT‑5.2. Both models are now available to paid ChatGPT users and via API, with Thinking also integrated into Codex. OpenAI frames the release as a competitive move against Anthropic’s Claude, which currently leads mobile AI app charts. Meanwhile, the U.S. Defense Department’s AI contracts shifted from Anthropic to OpenAI after Anthropic declined to support surveillance or autonomous weapons, prompting OpenAI to promise safeguards and limited agency access.
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