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by credit_guy 298 days ago
Here's my experience: for some coding tasks where GPT 4.1, Claude Sonnet 4, Gemini 2.5 Pro were just spinning for hours and hours and getting nowhere, GPT 5 just did the job without a fuss. So, I switched immediately to GPT 5, and never looked back. Or at least I never looked back until I found out that my company has some Copilot limits for premium models and I blew through the limit. So now I keep my context small, use GPT 5 mini when possible, and when it's not working I move to the full GPT 5. Strangely, it feels like GPT 5 mini can corrupt the full GPT 5, so sometimes I need to go back to Sonnet 4 to get unstuck. To each their own, but I consider GPT 5 a fairly bit move forward in the space of coding assistants.
3 comments
agos 298 days ago
any thread on HN about AI (there's constantly at least one in homepage nowadays) goes like this:

"in my experience [x model] one shots everything and [y model] stumbles and fumbles like a drunkard", for _any_ combination of X and Y.

I get the idea of sharing what's working and what's not, but at this point it's clear that there are more factors to using these with success and it's hard to replicate other people's successful workflows.

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benlc 298 days ago
Interestingly I'm experiencing the opposite as you. Was mostly using Claude Sonnet 4 and GPT 4.1 through copilot for a few months and was overall fairly satisfied with it. First task I threw at GPT 5, it excelled in a fraction of the time Sonnet 4 normally takes, but after a few iterations, it all went downhill. GPT 5 almost systematically does things I didn't ask it to do. After failing to solve an issue for almost an hour, I switched back to Claude which fixed it in the first try. YMMV
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AndyNemmity 298 days ago
Yeah, GPT 5 got into death loops faster than any other LLM, and I stopped using it for anything more than UI prototypes.
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czk 298 days ago
its possible to use gpt-5-high on the plus plan with codex-cli, its a whole different beast! i dont think theres any other way for plus users to leverage gpt-5 with high reasoning.

codex -m gpt-5 model_reasoning_effort="high"

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