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Advanced OpenAI models hallucinate more than older versions, internal report finds
(www.ynetnews.com)
This is a most excellent place for technology news and articles.
That's exactly the problem.
However, o4 is actually "o4 mini-high" while o3 is now just o3 now. The full release, no "mini" or other limitations. At this point o3 in its full form is better than a limited o4.
But, none of that matters while Claude 3.7 exists.