OK I have no reason to make this post other than I am dumbfounded by what I’ve just witnessed. I had a service provider who made a significant, complicated change to their API that I needed to accommodate into an existing Svelte app. Not only were the changes complicated, but I needed to maintain …

[image] jchase: Svelte app That’s beautiful man

Watching progress here with interest. o3-mini is an amazing model, and seen it sing on chatgpt.com . I thought maybe the model just didn’t support tools well but having integrated it into my own systems (which has 20+ tools) I now know that the model supports tools brilliantly. I am assuming that the…

This is my o3 experience as well - Although composer still needs some kinks worked out… i find it can do more in a single run than sonnet. R

Currently, this model, after a few messages, does not want to perform file change actions. It has to be asked several times to do so. Other than that, he does a good job. I am waiting for a fix from the Cursor team.

I am seeing the same. Sometimes it says “I’ll now apply the diff” and then does nothing. I’m also getting errors where the code snippet doesn’t get formed, and instead is printed out in the output itself. [image]

Yeah it’s strange, like anything else I’m finding it’s better for certain things than others. For instance - while it nailed this particular refactoring problem, in a completely different scenario, o3-mini bizarrely missed that April 28 2025 is a Monday and thought it was a Tuesday.

As of now, it is not usable; it behaves unpredictably, does not apply code changes, and lacks consistency, and this is very weird, because it works quite well in chat

I’ve found it sometimes has the same bug in ChatGPT when performing Deep Research. If you attempt to do multiple Deep Research within a chat, it writes out what it intends to do, says it is going to do it, and then does nothing.

O3-mini agent mode is insane

Discussions

Kirai February 4, 2025, 1:51pm 4

The agent mode with o3-mini in Cursor is working? Just yesterday it was giving worse code than 4o or medium sized local models… O3-mini not agentic? - #23 by Kirai

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O3-mini agent mode is insane

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