Comment by bradly
6 months ago
Thank you for the tip on o3. I will switch to that and see how it goes. I do have a paid sub for ChatGPT, but from the dropdown model descriptions "Great at coding" sounded better than "Advanced reasoning". And 4 is like almost twice as much as 3.
In my current experience:
- o3 is the bestest and my go-to, but its strength comes from it combining reasoning with search - it's the one model you can count on finding things out for you instead of going off vibe and training data;
- GPT 4.5 feels the smartest, but also has tight usage limits and doesn't do search like o3 does; I use it when I need something creative done, or switch to it mid-conversation to have it reason off an already primed context;
- o4-mini / o4-mini-hard - data transformation, coding stuff that doesn't require looking things up - especially when o3 looked stuff up already, and now I just need ChatGPT to apply it into code/diagrams;
- gpt-4o - only for image generation, and begrudgingly when I run out of quota on GPT 4.5
o3 has been my default starting model for months now; most of my queries generally benefit from having a model that does autonomous reasoning+search. Agentic coding stuff, that I push to Claude Code now.
I've heard my grandma talk about Catholic saints and their powers with a not dissimilar kind of discourse.
Point being?
Unlike Catholic saints, ChatGPT models actually exhibit these properties in directly observable and measurable way. I wrote how I decide which model to use for actual tasks, not which saint to pray to.
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the fact that one needs to know stuff like this and that it changes every three months seriously limits the usefulness of LLMs for me
I get this. On the one hand, those things I wrote down are just simple conclusions from immediate experience, not something I had to learn or feel burdened by - but on the other hand, when I look at similar lists for e.g. how to effectively use Claude Code, I recoil in horror.
There's a silver lining in this, though: none of that is any kind of deep expertise, so there's no need for up-front investment. Just start using a tool and pay attention, and you'll pick up on those things in no time.
Being in the cutting edge isn't for everyone. If you can find an island where staying updated is optional you can choose that. Imo, these islands are fast shrinking.
I’d also recommend basically always having search enabled. That’s eliminated major hallucinations for me.
lol yep, fully get that. And I mean I'm sure o4 will be great but the '-mini' variant is weaker. Some of it will come down to taste and what kind of thing you're working on too but personal preferences aside, from the heavy LLM users I talk to o3 and gemini 2.5 pro at the moment seem to be top if you're dialoging with them directly (vs using through an agent system).