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Claude Opus 4.5

anthropic.com

61–70 of 525 posts

Re: Claude Opus 4.5

#61
I used Gemini instead of my usual Claude for a non-trivial front-end project [1] and it really just hit it out of the park especially after the update last week, no trouble just directly emitting around 95% of the application. Now Claude is back! The pace of releases and competition seems to be heating up more lately, and there is absolutely no switching cost. It's going to be interesting to see if and how the frontier model vendors create a moat or if the coding CLIs/models will forever remain a commodity.

[1] https://github.com/jasonthorsness/tree-dangler

Re: Claude Opus 4.5

#62
post #12

I've played around with Gemini 3 Pro in Cursor, and honestly: I find it to be significantly worse than Sonnet 4.5. I've also had some problems that only Claude Code has been able to really solve; Sonnet 4.5 in there consistently performs better than Sonnet 4.5 anywhere else. I think Anthropic is making the right decisions with their models. Given that software engineering is probably one of the very few domains of AI…

Tangental observation - I've noticed Gemini 3 Pro's train of thought feels very unique. It has kind of an emotive personality to it, where it's surprised or excited by what it finds. It feels like a senior developer looking through legacy code and being like, "wtf is this??".

I'm curious if this was a deliberate effort on their part, and if they found in testing it provided better output. It's still behind other models clearly, but nonetheless it's fascinating.

Re: Claude Opus 4.5

#63
post #12

I've played around with Gemini 3 Pro in Cursor, and honestly: I find it to be significantly worse than Sonnet 4.5. I've also had some problems that only Claude Code has been able to really solve; Sonnet 4.5 in there consistently performs better than Sonnet 4.5 anywhere else. I think Anthropic is making the right decisions with their models. Given that software engineering is probably one of the very few domains of AI…

I've had Gemini 3 Pro solve issues that Claude Code failed to solve after 10 tries. It even insulted some code that Sonnet 4.5 generated

Re: Claude Opus 4.5

#64
post #50
post #12

I've played around with Gemini 3 Pro in Cursor, and honestly: I find it to be significantly worse than Sonnet 4.5. I've also had some problems that only Claude Code has been able to really solve; Sonnet 4.5 in there consistently performs better than Sonnet 4.5 anywhere else. I think Anthropic is making the right decisions with their models. Given that software engineering is probably one of the very few domains of AI…

I really don’t understand the hype around Gemini. Opus/Sonnet/GPT are much better for agentic workflows. Seems people get hyped for the first few days. It also has a lot to do with Claude code and Codex.

I'm completely the opposite. I find Gemini (even 2.5 Pro) much, much better than anything else. But I hate agentic flows, I upload the full context to it in aistudio and then it shines - anything agentic cannot even come close.

Re: Claude Opus 4.5

#65
post #12

I've played around with Gemini 3 Pro in Cursor, and honestly: I find it to be significantly worse than Sonnet 4.5. I've also had some problems that only Claude Code has been able to really solve; Sonnet 4.5 in there consistently performs better than Sonnet 4.5 anywhere else. I think Anthropic is making the right decisions with their models. Given that software engineering is probably one of the very few domains of AI…

I gave Sonnet 4.5 a base64 encoded PHP serialize() json of an object dump and told him to extraxt the URL within. It gave me the Youtube-URL to Rick Astley.

> I gave Sonnet 4.5 a base64 encoded PHP serialize() json of an object dump and told him to extraxt the URL within.

This is what I imagine the LLM usage of people who tell me AI isn't helpful.

It's like telling me airplanes aren't useful because you can't use them in McDonald's drive-through.

Re: Claude Opus 4.5

#66
post #12

I've played around with Gemini 3 Pro in Cursor, and honestly: I find it to be significantly worse than Sonnet 4.5. I've also had some problems that only Claude Code has been able to really solve; Sonnet 4.5 in there consistently performs better than Sonnet 4.5 anywhere else. I think Anthropic is making the right decisions with their models. Given that software engineering is probably one of the very few domains of AI…

My workflow was usually to use Gemini 2.5 Pro (now 3.0) for high-level architecture and design. Then I would take the finished "spec" and have Sonnet 4.5 perform the actual implementation.

I've done this and it seems to work well. I ask Gemini to generate a prompt for Claude Code to accomplish X

Re: Claude Opus 4.5

#67

Earlier quoted context omitted.

> They default to writing code via prompt generation which is sub-optimal. What do you mean?

If you're given a finite context window, what's the most efficient token to present for a programming task? sloppy prompts or actual code (using it with autocomplete)

I'm not sure you get how Cursor works. You add both instructions and code to your prompt. And it does provide its own autocomplete model as well. And... lots of people use that. (It's the largest platform today as far as I can tell)

Re: Claude Opus 4.5

#68

Earlier quoted context omitted.

do say more

Makes it sound like a one trick pony

Anthropic is leaning into agentic coding and heavily so. It makes sense to use swe verified as their main benchmark. It is also the one benchmark Google did not get the top spot last week. Claude remains king that's all that matters here.

Re: Claude Opus 4.5

#69
post #5

Seeing these benchmarks makes me so happy. Not because I love Anthropic (I do like them) but because it's staving off me having to change my Coding Agent. This world is changing fast, and both keeping up with State of the Art and/or the feeling of FOMO is exhausting. Ive been holding onto Claude Code for the last little while since Ive built up a robust set of habits, slash commands, and sub agents that help me squee…

Same boat and same thoughts here! Hope it holds its own against the competition, I've become a bit of a fan of Anthropic and their focus on devs.

Re: Claude Opus 4.5

#70
post #5

Seeing these benchmarks makes me so happy. Not because I love Anthropic (I do like them) but because it's staving off me having to change my Coding Agent. This world is changing fast, and both keeping up with State of the Art and/or the feeling of FOMO is exhausting. Ive been holding onto Claude Code for the last little while since Ive built up a robust set of habits, slash commands, and sub agents that help me squee…

You need much less of a robust set of habits, commands, sub agent type complexity with Codex. Not only because it lacks some of these features, it also doesn't need them as much.
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