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Claude 4

anthropic.com

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Re: Claude 4

#251

Post by SparkyMcUnicorn »

liorn wrote: post #233
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...

I asked it about Tailwind CSS (since I had problems with Claude not aware of Tailwind 4): > Which version of tailwind css do you know? > I have knowledge of Tailwind CSS up to version 3.4, which was the latest stable version as of my knowledge cutoff in January 2025.

Interesting. It's claiming different knowledge cutoff dates depending on the question asked.

"Who is president?" gives a "April 2024" date.

Re: Claude 4

#252

Post by pvg »

kilroy123 wrote: post #91
sali0 wrote: post #51

I've found myself having brand loyalty to Claude. I don't really trust any of the other models with coding, the only one I even let close to my work is Claude. And this is after trying most of them. Looking forward to trying 4.

The new Gemini models are very good too.

As the poet wrote:

I prefer MapQuest

that's a good one, too

Google Maps is the best

true that

double true!

Re: Claude 4

#253

Post by [deleted] »

deciduously wrote: post #147
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.

This feels like more of a system prompt issue than a model issue?

[deleted]

Re: Claude 4

#254

Post by pzo »

__jl__ wrote: post #21
burningion wrote: post #15

Earlier quoted context omitted.

Yeah it's live on the pricing page: https://www.anthropic.com/pricing#api Opus 4 is $15 / m tokens in, $75 / MTok out Sonnet 4 is the same $3 / MTok in, $15 / MTok out

Thanks. I looked a couple minutes ago and couldn't see it. For anyone curious, pricing remains the same as previous Anthropic models.

surprisingly cursor charges only 0.75x for request for sonnet 4.0 (comparing to 1x for sonnet 3.7)

Re: Claude 4

#255

Post by michaelbrave »

minimaxir wrote: post #102
tptacek wrote: post #83

Have they documented the context window changes for Claude 4 anywhere? My (barely informed) understanding was one of the reasons Gemini 2.5 has been so useful is that it can handle huge amounts of context --- 50-70kloc?

Context window is unchanged for Sonnet. (200k in/64k out): https://docs.anthropic.com/en/docs/about-claude/models/overv... In practice, the 1M context of Gemini 2.5 isn't that much of a differentiator because larger context has diminishing returns on adherence to later tokens.

I've had a lot of fun using Gemini's large context. I scrape a reddit discussion with 7k responses, and have gemini synthesize it and categorize it, and by the time it's done and I have a few back and fourths with it I've gotten half of a book written.

That said I have noticed that if I try to give it additional threads to compare and contrast once it hits around the 300-500k tokens it starts to hallucinate more and forget things more.

Re: Claude 4

#256

Post by diggan »

drewnick wrote: post #234
diggan wrote: post #59

Anyone with access who could compare the new models with say O1 Pro Mode? Doesn't have to be a very scientific comparison, just some first impressions/thoughts compared to the current SOTA.

I just had some issue with RLS/schema/postgres stuff. Gemini 2.5 Pro swung and missed, and talked a lot with little code, Claude Sonnet 4 solved. O1 Pro Solved. It's definitely random which of these models can solve various problems with the same prompt.

> definitely random which of these models can solve various problems with the same prompt.

Yeah, this is borderline my feeling too. Kicking off Codex with the same prompt but four times sometimes leads to for very different but confident solutions. Same when using the chat interfaces, although it seems like Sonnet 3.7 with thinking and o1 Pro Mode is a lot more consistent than any Gemini model I've tried.

Re: Claude 4

#258

Post by ChadMoran »

whalesalad wrote: post #75

Anyone have a link to the actual Anthropic official vscode extension? Struggling to find it. edit: run `claude` in a vscode terminal and it will get installed. but the actual extension id is `Anthropic.claude-code`

Thank you!

Re: Claude 4

#259

Post by cma »

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...

When I asked the model it told me January (for sonnet 4). Doesn't it normally get that in its system prompt?

Re: Claude 4

#260

Post by dr_kiszonka »

energy123 wrote: post #79

> Finally, we've introduced thinking summaries for Claude 4 models that use a smaller model to condense lengthy thought processes. This summarization is only needed about 5% of the time—most thought processes are short enough to display in full. This is not better for the user. No users want this. If you're doing this to prevent competitors training on your thought traces then fine. But if you really believe this is…

I agree. Thinking traces are the first thing I check when I suspect Claude lied to me. Call me cynical, but I suspect that these new summaries will conveniently remove the "evidence."
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