OpenAI launches GPT-5.3-instant with fewer lectures and less hallucinations

GPT-5.3-Instant performs better than 5.1-Instant and is a little behind 5.2-Instant, but is better at conversation. (Picture: Adobe)
Hallucinations are down 27% when it uses the web and ~20% in reasoning, and OpenAI did actually notice that the 5.2 model often cames across like a nanny — berating users with obvious, condescending lectures for harmless questions.

This has been solved by reducing unnecessary «dead ends,» caveats and «declarative formulations» in order to let the conversation flow more freely — solving one of many users’ major gripes with the current OpenAI models.

The model is also better at search, combining search responses with its own knowledge and reasoning. This should put results into context instead of just summarizing results.

Bu the real update with this model is bringing ChatGPT to a more natural style and tone with freely flowing conversation — which should be far less «cringe.»

OpenAI is promising less «Stop. Take a breath»-responses, or «I’m going to calm this down» kinds of outputs. It should also be better at creative writing.

GPT-5.3-instant is available today in the app (choose Instant in the model selector), API and web, and updates to Thinking and Pro are «coming soon.»

Read more: OpenAI’s announcement, writeups on 9to5Google, TechCrunch and The Register.