I haven’t seen any other posts about it but for me it seems that running o4-mini in agent mode runs absurdly slowly. Even attaching the files I want to be used, it will grep/read lines 1-200 of tons of even unrelated files and will often just do 25 greps before timing out, requiring a resume prompt.…

Yeah, it’s the same for me. I’m sure they’re aware of it and trying to make improvements, but I’ve had it run for 30+ minutes just to crash :clown_face:. Trying to @ as much relevant code as possible helps so it prevents a bunch of lookups, but overall still slow.

I think he is thinking cursor’s o4 mini is o4 mini high It’s just that at the moment the o4 mini doesn’t have the visual reasoning process on, and is actually thinking about it as slowly as the o3 mini That’s why he’s slow , to output a sentence you have to think about it and wait a while…

I’m experiencing the same thing. Claude 3.7 is also super slow today. Takes like 5 minutes of just searching and grepping.

I would like to then have access to its thoughts to at least know what’s going in “it’s” mind

Yeah seems much slower today. Also replied the same to this thread [image] O4 mini, the best model, but I feel it more slow than yesterday Discussion Yeah I feel the same, today it has been noticeably slower than usual, maybe they’ve made some change in anticipation of it …

I’ve experienced that as well…it sits there and thinks for a long time, but then it spits out a single line of code that completely fixes the problem I threw at it, so I’m not complaining. Other models (Claude in particular) are super chatty and you get to see every thought they’re having. o4-mini i…

Today I tried enabling “include project structure” from cursor options, wrote out a detailed project spec doc including file names and mentioned that in my cursor rules and now it seems to waste less time with useless greps but the requests still take a while. I’m not sure which of those steps helpe…

Spent some more time with it today. I’m generally liking the outputs. But it is quite slow. It would be nice to see what it’s thinking along the way. Right now it’s just a long list of tool usages followed by a single edit, then a few more tool usages, then finally a terse explanation of what it did…

I believe that openai doesn’t make their thinking tokens visible to api users so that’s on them rather than cursor but I agree it would be very nice. It seems that some times of day o4 mini will finish in a few minutes but others can take half an hour so maybe it is also an api limit issue? Hopeful…

O4-mini absurdly slow?

Discussions

Frulfump (Frulfump) April 23, 2025, 4:22pm 6

Yeah seems much slower today. Also replied the same to this thread

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O3 and o4-mini now available in Cursor Release Discussions	53	8086	May 1, 2025
O4 mini, the best model, but I feel it more slow than yesterday Discussions	1	550	April 23, 2025
O3-mini in agent mode fails function calls (credits dump) Bug Reports	8	653	February 16, 2025
Cursor agent exceptionally slow? Help	4	351	August 14, 2025
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O4-mini absurdly slow?

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