OpenAI's updated GPT-5.5 Instant is better at shopping, complex constraints, and understanding user intent — and it's already in the API
OpenAI has made a significant update to its most widely used language model, GPT-5.5 Instant, which is the default in the free version of ChatGPT.
The company announced the upgraded version of GPT-5.5 Instant yesterday on X, calling it "much more fun to talk to" and saying it is "better at understanding the intent behind a question and adapting its response accordingly," as well as offering improvements in shopping results, local recommendations, and handling "complex constraints."
However, it has not yet provided any benchmarks or numerical results to quantify these claims.
The company said the updated GPT-5.5 Instant was rolling out first to paid ChatGPT subscribers and then to free users as of today, June 25.
OpenAI also updated its chat-latest API alias, which points to the latest GPT-5.5 Instant model currently used in ChatGPT, while continuing to recommend the separate gpt-5.5 model for production API usage.
That distinction...
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