OpenAI released GPT-5.3 Instant as an update to its primary ChatGPT model. This version aims to enhance conversational naturalness and overall utility.
The new model reduces unnecessary refusals and eliminates defensive or moralizing preambles. These adjustments address user feedback regarding restrictive and repetitive model behavior.
GPT-5.3 Instant improves web result integration to provide more relevant and contextualized answers. The update specifically targets a reduction in model hallucinations.
This release coincides with Google launching its Gemini 3.1 Flash-Lite model. The simultaneous rollouts underscore the intensifying competition within the artificial intelligence sector.
GPT-5.3 Instant is immediately available to all ChatGPT users. Developers can also access the model through the API.