GPT-5 Instant doesn’t do dedicated reasoning. It is probably still able to reason sometimes in the actual reply block (it did so in the past in the seahorse emoji case), so there seems to be some degree of RLVR involved, but even with that advantage, GPT-5 Instant was not a big improvement over GPT-4o.
GPT-5 Instant doesn’t do dedicated reasoning. It is probably still able to reason sometimes in the actual reply block (it did so in the past in the seahorse emoji case), so there seems to be some degree of RLVR involved, but even with that advantage, GPT-5 Instant was not a big improvement over GPT-4o.