Comment by ipsum2
3 hours ago
I've been using GPT-5.1-thinking for the last week or so, it's been horrendous. It does not spend as much time thinking as GPT-5 does, and the results are significantly worse (e.g. obvious mistakes) and less technical. I suspect this is to save on inference compute.
I've temporarily switched back to o3, thankfully that model is still in the switcher.
edit: s/month/week
Not possible. GPT-5.1 didn’t exist a month ago. I helped train it.
Double checked when the model started getting worse, and realized I was exaggerating a little bit on the timeframe. November 5th is when it got worse for me. (1 week in AI feels like a month..)
Was there a (hidden) rollout for people using GPT-5-thinking? If not, I have been entirely mistaken.