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Claude Haiku 4.5

anthropic.com

31–40 of 292 posts

Re: Claude Haiku 4.5

#31

The main thing holding these Anthropic models back is context size. Yes, quality deteriorates over a large context window, but for some applications, that is fine. My company is using grok4-fast, the Gemini family, and GPT4.1 exclusively at this point for a lot of operations just due to the huge 1m+ context.

Is your company Tier 4? Anthropic has had 1M context size in beta for some time now.

https://docs.claude.com/en/docs/build-with-claude/context-wi...

Re: Claude Haiku 4.5

#32
post #5

Earlier quoted context omitted.

With caching that's 10 cents per million in. Most of the cheap open source models (which this claims to beat, except glm 4.6) have limited and not as effective caching. This could be massive.

The funny thing is that even in this area Anthropic is behind other 3 labs (Google, OpenAI, xAI). It's the only one out of those 4 that requires you to manually set cache breakpoints, and the initial cache costs 25% more than usual context. The other 3 have fully free implicit caching. Although Google also offers paid, explicit caching. https://docs.claude.com/en/docs/build-with-claude/prompt-cac... https://ai.google…

I don't understand why we're paying for caching at all (except: model providers can charge for it). It's almost extortion - the provider stores some data for 5min on some disk, and gets to sell their highly limited GPU resources to someone else instead (because you are using the kv cache instead of GPU capacity for a good chunk of your input tokens). They charge you 10% of their GPU-level prices for effectively _not_ using their GPU at all for the tokens that hit the cache.

If I'm missing something about how inference works that explains why there is still a cost for cached tokens, please let me know!

Re: Claude Haiku 4.5

#33

Earlier quoted context omitted.

$1/M is hardly a big improvement over GPT5's $1.250/M (or Gemini Pro's $1.5/M), and given how much worse Haiku is than those at any kind of difficult problem (or problems with a large context size), I can't imagine it being a particularly competitive alternative for coding. Especially for anything math/logic related, I find GPT5 and Gemini Pro to be significantly better even than Opus (which reflects in their models…

GPT-5 is $10/M for output tokens, twice the cost of Haiku 4.5 at $5/M, despite Haiku apparently being better at some tasks (SWE Bench). I suppose it depends on how you are using it, but for coding isn't output cost more relevant than input - requirements in, code out ?

> I suppose it depends on how you are using it, but for coding isn't output cost more relevant than input - requirements in, code out ?

Depends on what you're doing, but for modifying an existing project (rather than greenfield), input tokens >> output tokens in my experience.

Re: Claude Haiku 4.5

#34
At augmentcode.com, we've been evaluating Haiku for some time, it's actually a very good model. We found out it's 90% as good as Sonnet and is ~34% faster than sonnet!

Where it doesn't shine much is on very large coding task. but it is a phenomenal model for small coding tasks and the speed improvement is much welcome

Re: Claude Haiku 4.5

#35
post #32

Earlier quoted context omitted.

The funny thing is that even in this area Anthropic is behind other 3 labs (Google, OpenAI, xAI). It's the only one out of those 4 that requires you to manually set cache breakpoints, and the initial cache costs 25% more than usual context. The other 3 have fully free implicit caching. Although Google also offers paid, explicit caching. https://docs.claude.com/en/docs/build-with-claude/prompt-cac... https://ai.google…

I don't understand why we're paying for caching at all (except: model providers can charge for it). It's almost extortion - the provider stores some data for 5min on some disk, and gets to sell their highly limited GPU resources to someone else instead (because you are using the kv cache instead of GPU capacity for a good chunk of your input tokens). They charge you 10% of their GPU-level prices for effectively _not_…

It's not about storing data on disk, it's about keeping data resident in memory.

Re: Claude Haiku 4.5

#36
post #12

$1/M input tokens and $5/M output tokens is good compared to Claude Sonnet 4.5 but nowadays thanks to the pace of the industry developing smaller/faster LLMs for agentic coding, you can get comparable models priced for much lower which matters at the scale needed for agentic coding. Given that Sonnet is still a popular model for coding despite the much higher cost, I expect Haiku will get traction if the quality is a…

Yeah, I'm a bit disappointed by the price. Claude 3.5 Haiku was $0.8/$4, 4.5 Haiku is $1/$5. I was hoping Anthropic would introduce something price-competitive with the cheaper models from OpenAI and Gemini, which get as low as $0.05/$0.40 (GPT-5-Nano) and $0.075/$0.30 (Gemini 2.0 Flash Lite).

I am a bit mind boggled by the pricing lately, especially since the cost increased even further. Is this driven by choices in model deployment (unquantized etc) or simply by perceived quality (as in 'hey our model is crazy good and we are going to charge for it)?

Re: Claude Haiku 4.5

#38

I am really interested in the future of Opus; is it going to be an absolute monster, and continue to be wildly expensive? Or is the leap from 4 -> 4.5 for it going to be more modest.

Technically, they released Opus 4.1 a few weeks ago, so that alone hints at a smaller leap from 4.1 -> 4.5, compared to the leap from Sonnet 4 -> 4.5. That is, of course, if those version numbers represent anything but marketing, which I don't know.

Re: Claude Haiku 4.5

#39
Sonnet 4.5 is an excellent model for my startup's use case. Chatting to Haiku it looks promising too, and it may be great drop in replacement for some of inference tasks that have a lot of input tokens but don't require 4.5-level intelligence.

Re: Claude Haiku 4.5

#40
In our (very) early testing at Hyperbrowser but we're seeing Haiku 4.5 do really well on computer use as well. Pretty cool that Haiku is like the cheapest computer use model from the big labs now.
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