[m_mueller]

GPT-5 is pretty decent nowadays, but Claude 4 Sonnet is superior in most cases. GPT beats it in cost and usable context window when something quite complex comes up to plan top-down.

[boredtofears]

What I find interesting is how much opinions vary on this. Open a different thread and people will seem to have consensus on GPT or Gemini being superior.

Even the bench marks don’t seem all that helpful.

[TuxSH]

Well, last I checked Claude's webchat UI doesn't have LaTeX rendering for output messages which is extremely annoying.

On the other hand, I wish ChatGPT had GitHub integration in Projects, not just in Codex.

I've also had Claude Sonnet 4.0 Thinking spew forth incorrect answers many times for complex problems involving some math (with incapability to write a former proof sometimes), whereas ChatGPT 5 Thinking gives me correct answers with formal proof.

[kissgyorgy]

I think it depends on the domain. For example, GPT-5 is better for frontend, React code, but struggles with niche things like Nix. Claude's UI designs are not as pretty as GPT-5's.

[CharlieIsAHero]

What do you mean by usable context window? Sonnet 4 is 968k and gpt5 is 368k. Are you saying the context window on sonnet is useless?

[CuriouslyC]

Sonnet long context performance sucks. https://fiction.live/stories/Fiction-liveBench-Feb-21-2025/o...

I can confirm Sonnet is good for vibe coding but makes an absolute mess of large and complex codebases, while GPT5 tends to be pretty respectful.

[m_mueller]

I never implied it's useless. I don't have scientific data to back this up either, this is just my personal "feeling" from a couple hundred hours I've spent working with these models this year: GPT-5 seems a bit better at top-down architectural work, while Sonnet is better at the detail coding level. In terms of usable context window, again from personal experience so far, to me GPT-5 has somewhat of an edge.