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Good luck finding the tweet (I can't) but at least one OpenAI engineer has said that o1-pro was not just 'o1 thinking longer'.

This one? Found with Kagi Assistant.

It says:

> hey aidan, not a miscommunication, they are different products! o1 pro is a different implementation and not just o1 with high reasoning.

That's a rather crappy product naming scheme.

I also don't have that tweet saved, but I do remember it.