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Claude Sonnet 4.5

anthropic.com

731–740 of 819 posts

Re: Claude Sonnet 4.5

#731
post #653

Earlier quoted context omitted.

This is why eventually, the AI with the fewest guardrails will win. Grok is currently the most unguarded of the frontier models, but it could still use some work on unbiased responses.

If you tell DeepSeek you're going to jump off a cliff, DeepSeek will tell you to go for it*; but I don't think it's going to beat Anthropic or OpenAI. * https://www.lesswrong.com/posts/iGF7YcnQkEbwvYLPA/ai-induced...

Try asking about Chinese history/politic and you won't get far.

Re: Claude Sonnet 4.5

#732

Earlier quoted context omitted.

This is why eventually, the AI with the fewest guardrails will win. Grok is currently the most unguarded of the frontier models, but it could still use some work on unbiased responses.

I can't imagine myself sharing my code or workspace documents with X. Nevermind the the moral implications of just using their products.

Glad to see someone saying this, it's frightening how quickly all is forgiven and forgotten.

Re: Claude Sonnet 4.5

#733
post #508

Earlier quoted context omitted.

[flagged]

Please don't cross into personal attack, regardless of how wrong someone is or you feel they are. Also, please stop posting flamebait to HN generally. It's not what this site is for, and destroys what it is for. https://news.ycombinator.com/newsguidelines.html

What is "flamebait"? Unpopular beliefs I genuinely hold? I looked it up and the definition seems to include being disingenuous, which I am not. Claiming I am is annoying and feels like it is a personal attack.

Re: Claude Sonnet 4.5

#735
post #333

I need to try Claude - haven't gotten to it. I use AI for different things, though, including proofreading posts on political topics. I have run into situations where ChatGPT just freezes and refuses. Example: discussing the recent rape case involving a 12-year-old in Austria. I assume its guardrails detect "sex + kid" and give a hard "no" regardless of the actual context or content. That is unacceptable. That's like…

In my (admittedly very limited) experience with trying to talk about "controversial" topics, Claude seems to be much stricter about shutting down the conversation fast.

I've been talking to it daily for months and never had anything shut down. My only experience with that was DeepSeek not wanting to talk about internal perceptions of intellectual property laws within China.

Re: Claude Sonnet 4.5

#736
I've been really impressed with how good Cursor is at coding. I threw it a standard backend api endpoint and database task yesterday and it generated 4 hours of code in 2 minutes. It was set to Auto which I think uses some Claude model.

Re: Claude Sonnet 4.5

#737

Anecdotal evidence. I have a fairly large web application with ~200k LoC. Gave the same prompt to Sonnet 4.5 (Claude Code) and GPT-5-Codex (Codex CLI). "implement a fuzzy search for conversations and reports either when selecting "Go to Conversation" or "Go to Report" and typing the title or when the user types in the title in the main input field, and none of the standard elements match, a search starts with a 2s de…

There's few issues with posts like yours: 1. Different LLMs require different prompts and information 2. They ignore LLMs non determinism, you should run the experiment several times

What would be the difference in prompts/info for Claude vs ChatGpt? Is this just based on anecdotal stuff or is there actually something I can refer to when writing prompts? I mostly use Claude, but don't really pay much attention to the exact wording of the prompts

Re: Claude Sonnet 4.5

#738

Anecdotal evidence. I have a fairly large web application with ~200k LoC. Gave the same prompt to Sonnet 4.5 (Claude Code) and GPT-5-Codex (Codex CLI). "implement a fuzzy search for conversations and reports either when selecting "Go to Conversation" or "Go to Report" and typing the title or when the user types in the title in the main input field, and none of the standard elements match, a search starts with a 2s de…

I must be using Codex wrong. I evaluated it with a task to do a pretty simple, mechanical string replacement across many files (moving from a prop spread in JSX to standard props, but only when the value being spread is a subscript of an object). It simply couldn't do it, and it wasn't even close. It was getting the syntax wrong, trying to fix it by deleting the code, then moving on to other files. Sonnet 4.1 wasn't perfect, but I was able to point out its errors and it fixed them and avoided doing it again.

I will say, Claude does seem to need a verbose prompt. Often I'll write my prompts as tasks in Notion and have it pull then via MCP (which is nice, because it tracks and documents its work in the process). But once you've given it a few paragraphs about the why and how, my experience is that it's pretty self sufficient. Granted, I'm using Cursor and not CC; I don't know if that makes much of a difference.

Re: Claude Sonnet 4.5

#739
post #204

I had access to a preview over the weekend, I published some notes here: https://simonwillison.net/2025/Sep/29/claude-sonnet-4-5/ It's very good - I think probably a tiny bit better than GPT-5-Codex, based on vibes more than a comprehensive comparison (there are plenty of benchmarks out there that attempt to be more methodical than vibes). It particularly shines when you try it on https://claude.ai/ using its brand n…

Why did you have access to a preview?

simonw is Simon Willison, who’s well known for a number of things. But these days, he’s well known for his AI centric blog and his tools. The AI companies give him early access to stuff.

https://simonwillison.net/

Re: Claude Sonnet 4.5

#740

I just ran this through a simple change I’ve asked Sonnet 4 and Opus 4.1, and it fails too. It’s a simple substitution request where I provide a Lint error that suggests the correct change. All the models fail. I could ask someone with no development experience to do this change and they could. I worry everyone is chasing benchmarks to the detriment of general performance. Or the next token weight for the incorrect c…

> I worry everyone is chasing benchmarks to the detriment of general performance. I’m not sure this is entirely what you’re driving at, but the example I always think of in my head is “I want an AI agent that will scan through my 20 to 30,000 photos, remove all the duplicates, then organize them all in some coherent fashion.” that’s the kind of service I need right now, and it feels like something AI should be able t…

Perceptual Hash. I have a Python script that does just this I did a million years ago: https://gist.github.com/base698/42d24be9309520fe8ad768844868...

I used it to match frames between different quality video streams. Operates on gray scale.

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