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A comment on OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API.

Re:OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API by ftonon on Friday April 24, 2026 @04:06PM (#47895135)
Looks like the default config in the chat is instant 5.3, it only uses the 5.5 on the thinking variant
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Re:OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API by bnm04 on Friday April 24, 2026 @04:26PM (#47895328)
They moved a few months ago to have separate instant and thinking models. 5.3 is the latest instant, and 5.5 is a reasoning model.
[ Parent | on HN ]