The chatgpt-4o-latest endpoint has branched away from the 4o-08 (and/or 4o-11) models quite a while ago, so it's not unlikely they've updated it again.

Sonnet has also had silent changes, likely at the system prompt level - not the public one, the non-public "alignment" one that is even applied to the API - that have made it lazier in terms of maximum output length (despite max_tokens values).

Yes, OpenAI recently introduced GPT-4o, and many users have noticed differences in its reasoning, response style, and overall feel compared to previous versions. Some say it feels faster and more conversational, while others feel it occasionally simplifies things too much or changes its approach unexpectedly. These differences likely stem from optimizations in efficiency, response balance, and alignment with real-time interaction goals.

Yes, yesterday I accidentally used the 4o instead of 4.5 model and noticed it was behaving differently. Showed me a table with pros and cons, suggested me to generate a document that I could print for better convenience etc. Seems it's better than before but haven't used it that much to be sure.

I had exactly the same thought today so there's at least two of us.

I think it might be a trick to get more people to use 4.5

guys after using this model more and more, the more off it feels. It just doesnt seem to have the "understanding" like how it usually does.

missing the question mark ?

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