tech
March 5, 2026
GPT-5.3 Instant: Smoother, more useful everyday conversations
Today, we’re releasing an update to ChatGPT’s most-used model that makes everyday conversations more consistently helpful and fluid. GPT‑5.3 Instant delivers more accurate answers, richer and better-contextualized results when searching the web, and reduces unnecessary dead ends, caveats, and overly declarative phrasing that can interrupt the flow of conversation.
TL;DR
- GPT-5.3 Instant enhances conversational fluidity, accuracy, and helpfulness.
- Reduces unnecessary refusals and overly cautious disclaimers, providing more direct answers.
- Improves web search integration by better contextualizing information and reducing reliance on long link lists.
- Features a more focused and natural conversational style, cutting unnecessary phrases.
- Achieves reduced hallucination rates: 26.8% decrease with web use and 19.7% without on high-stakes evaluations.
- User-feedback evaluation shows a 22.5% decrease in hallucinations with web use and 9.6% without.
- Acts as a stronger writing partner for creative and practical writing tasks.
- Limitations include ongoing work on non-English language naturalness and further tone refinement.
- GPT-5.3 Instant is available now for all users and developers; GPT-5.2 Instant will be retired on June 3, 2026.
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