OpenAI rolls out GPT-5.3 Instant, improving ChatGPT with fewer refusals, smarter web answers, lower hallucination rates, and stronger writing.

OpenAI launches GPT-5.4, calling it its most capable and efficient AI model yet, with AI agents, computer control, improved reasoning, and a 1M-token context.

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Lite, its fastest and most cost-efficient AI model, at $0.25 per million tokens and 2.5x faster than Gemini 2.5 Flash.

GPT-5.3 Instant reduces hallucinations by 26.8% on web queries and 19.7% on internal knowledge — OpenAI's most-used model now ...

OpenAI releases GPT-5.3 Instant for ChatGPT with fewer refusals, improved web answers, and reduced hallucinations across ...

OpenAI is rolling out GPT-5.3 Instant today. OpenAI wants to make ChatGPT feel smoother in the places people actually notice.

GPT-5.3-Codex helped debug and deploy parts of itself. Codex can be steered mid-task without losing context. "Underspecified" prompts now produce richer, more usable results. OpenAI today announced ...

GPT-5.3-Codex can now operate a computer as well as write code It's also quicker, uses fewer tokens and can be reasoned with mid-flow Codex 5.3 was even used to build itself and the team was "blown ...

OpenAI Group PBC today released a lightweight version of its popular agentic coding tool GPT-5.3-Codex, which is designed for more rapid inference, the process by which artificial intelligence models ...