[lhl]

I've been using o3 extensively since release (and a lot of Deep Research). I also use a lot of Claude and Gemini 2.5 Pro (most of the times, for code I'll let all of them go at it and iterate on my fav results).

So far I've only used o3-pro a bit today, and it's a bit too heavy to use interactively (fire it off, revisit in 10-15 minutes), but it seems to generate much cleaner/more well organized code and answers.

I feel like the benchmarks aren't really doing a good job at capturing/reflecting capabilities atm. eg, while Claude 4 Sonnet appears to score about as well as Opus 4, in my usage Opus is always significantly better at solving my problem/writing the code I need.

Besides especially complex/gnarly problems, I feel like a lot of the different models are all good enough and it comes down to reliability. For example, I've stopped using Claude for work basically because multiple times now it's completely eaten my prompts and even artifacts it's generated. Also, it hits limits ridiculously fast (and does so even when on network/resource failures).

I use 4.1 as my workhorse for code interpreter work (creating graphs/charts w/ matplotlib, basic df stuff, converting tables to markdown) as it's just better integrated than the others and so far I haven't caught 4.1 transposing/having errors with numbers (which I've noticed w/ 4o and Sonnet).

Having tested most of the leading edge open and closed models a fair amount, 4.5 is still my current preferred model to actually talk to/make judgement calls (particularly with translations). Again, not reflected in benchmarks, but 4.5 is the only model that gives me the feeling I had when first talking to Opus 3 (eg, of actual fluid intelligence, and a pleasant personality that isn't overly sychophantic) - Opus 4 is a huge regression in that respect for me.

(I also use Codex, Roo Code, Windsurf, and a few other API-based tools, but tbt, OpenAI's ChatGPT UI is generally better for how I leverage the models in my workflow.)

[petesergeant]

I wonder if we'll start to see artisanal benchmarks. You -- and I -- have preferred models for certain tasks. There's a world in which we start to see how things score on the "simonw chattiness index", and come to rely on smaller more specific benchmarks I think

[lhl]

Yeah, I think personalized evals will definitely be a thing. Besides reviewing way too much Arena, WildChat and having now seen lots of live traces firsthand, there's a wide range of LLM usage (and preferences), which really don't match my own tastes or requirements, lol.

For the past year or two, I've had my own personal 25 question vibe-check I've used on new models to kick the tires, but I think the future is something both a little more rigorous and a little more automated (something like LLM Jury w/ an UltraFeedback criteria based off of your own real world exchanges and then BTL ranked)? A future project...

[HDThoreaun]

I think its more likely that we move away from benchmarks and towards more of a traditional reviewer model. People will find LLM influencers whose takes they agree with and follow them to keep up with new models.

[manmal]

Thanks for your input, very appreciated. Just in case you didn’t mean Claude Code, it’s really good in my experience and mostly stable. If something fails, it just retries and I don’t notice it much. Its autonomous discovery and tool use is really good and I‘m relying more and more on it.

[lhl]

For the Claude issues, I'm referring to the claude.ai frontend. While I use some Codex, Aider, and other agentic tools, I found Claude Code to be not to my taste - for my uses it tended burn a lot of tokens and gave relatively mediocre results, but I know it works well for others, so YMMV.