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Claude 4

anthropic.com

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Re: Claude 4

#321

Post by thethirdone »

minimaxir wrote: post #179
KaoruAoiShiho wrote: post #61

Is this really worthy of a claude 4 label? Was there a new pre-training run? Cause this feels like 3.8... only swe went up significantly, and that as we all understand by now is done by cramming on specific post training data and doesn't generalize to intelligence. The agentic tooluse didn't improve and this says to me that it's not really smarter.

So I decided to try Claude 4 Sonnet against my "Given a list of 1 million random integers between 1 and 100,000, find the difference between the smallest and the largest numbers whose digits sum up to 30." benchmark I tested against Claude 3.5 Sonnet: https://news.ycombinator.com/item?id=42584400 The results are here ( https://gist.github.com/minimaxir/1bad26f0f000562b1418754d67... ) and it utterly crushed the proble…

The first iteration vectorized with numpy is the best solution imho. The only additional optimization is using modulo 9 to give you a sum of digits mod 9; that should filter out approximately 1/9th of numbers. The digit summing is the slow part so reducing the number of values there results in a large speedup. Numpy can do that filter pretty fast as `arr = arr[arr%9==3]`

With that optimization its about 3 times faster, and all of the none numpy solutions are slower than the numpy one. In python it almost never makes sense to try to manually iterate for speed.

Re: Claude 4

#323

Post by michelb »

unshavedyak wrote: post #92

Anyone know if this is usable with Claude Code? If so, how? I've not seen the ability to configure the backend for Claude Code, hmm

Yes, you can type /model in Code to switch model, currently Opus 4 and Sonnet 4 for me.

Re: Claude 4

#324

Post by codyvoda »

datpuz wrote: post #311
sunaookami wrote: post #193

Earlier quoted context omitted.

Guess we have to wait till DeepSeek mops the floor with everyone again.

DeepSeek never mopped the floor with anyone... DeepSeek was remarkable because it is claimed that they spent a lot less training it, and without Nvidia GPUs, and because they had the best open weight model for a while. The only area they mopped the floor in was open source models, which had been stagnating for a while. But qwen3 mopped the floor with DeepSeek R1.

counterpoint: influencers said they wiped the floor with everyone so it must have happened

Re: Claude 4

#325

Post by lwansbrough »

saaaaaam wrote: post #320

I've been using Claude Opus 4 the past couple of hours. I absolutely HATE the new personality it's got. Like ChatGPT at its worst. Awful. Completely over the top "this is brilliant" or "this completely destroys the argument!" or "this is catastrophically bad for them". I hope they fix this very quickly.

What's with all the models exhibiting sycophancy at the same time? Recently ChatGPT, Gemini 2.5 Pro latest seems more sycophantic, now Claude. Is it deliberate, or a side effect?

Re: Claude 4

#326

Post by modeless »

michelb wrote: post #319
modeless wrote: post #5

Ooh, VS Code integration for Claude Code sounds nice. I do feel like Claude Code works better than the native Cursor agent mode. Edit: How do you install it? Running `/ide` says "Make sure your IDE has the Claude Code extension", where do you get that?

What would this do other than run Claude Code in the same directory you have open in VSC?

Show diffs in my editor windows, like Cursor agent mode does, is what I'm hoping.

Re: Claude 4

#327

Post by tonyhart7 »

dvfjsdhgfv wrote: post #281
minimaxir wrote: post #118

An important note not mentioned in this announcement is that Claude 4's training cutoff date is March 2025, which is the latest of any recent model. (Gemini 2.5 has a cutoff of January 2025) https://docs.anthropic.com/en/docs/about-claude/models/overv...

One thing I'm 100% is that a cut off date doesn't exist for any large model, or rather there is no single date since it's practically almost impossible to achieve that.

its not a definitive "date" you cut off information, but more a "recent" material you can feed, training takes times

if you waiting for a new information, of course you are not going ever to train

Re: Claude 4

#328

Post by cloudc0de »

fsto wrote: post #95

What’s your guess on when Claude 4 will be available on AWS Bedrock?

I was able to request both new models only in Oregon / us-west-2.

I built a Slack bot for my wife so she can use Claude without a full-blown subscription. She uses it daily for lesson planning and brainstorming and it only costs us about .50 cents a month in Lambda + Bedrock costs. https://us-west-2.console.aws.amazon.com/bedrock/home?region...

https://docs.anthropic.com/en/docs/claude-code/bedrock-verte...

Re: Claude 4

#329

Post by numlocked »

teekert wrote: post #313

[flagged]

(Caveat on this comment: I'm the COO of OpenRouter. I'm not here to plug my employer; just ran across this and think this suggestion is helpful)

Feel free to give OpenRouter a try; part of the value prop is that you purchase credits and they are fungible across whatever models & providers you want. We just got Sonnet 4 live. We have a chatroom on the website, that simply uses the API under the covers (and deducts credits). Don't have passkeys yet, but a good handful of auth methods that hopefully work.

Re: Claude 4

#330

Post by lherron »

waleedlatif1 wrote: post #108

I really hope sonnet 4 is not obsessed with tool calls the way 3-7 is. 3-5 was sort of this magical experience where, for the first time, I felt the sense that models were going to master programming. It’s kind of been downhill from there.

Overly aggressive “let me do one more thing while I’m here” in 3.7 really turned me off as well. Would love a return to 3.5’s adherence.
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