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Claude Haiku 4.5

anthropic.com

81–90 of 292 posts

Re: Claude Haiku 4.5

#81
post #52

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.

I wonder what the next smaller model after Haiku will be called. "Claude Phrase"?

Claude Garden Path Sentence

Re: Claude Haiku 4.5

#82
post #68
post #65

Earlier quoted context omitted.

"pay for data on VRAM" RAM of GPU

But that doesn't make sense? Why would they keep the cache persistent in the VRAM of the GPU nodes, which are needed for model weights? Shouldn't they be able to swap in/out the kvcache of your prompt when you actually use it?

They are not caching to save network bandwidth. They are caching to increase interference speed and reduce (their own) costs.

Re: Claude Haiku 4.5

#83
post #48

Why I use cheaper models for summaries (a lot ogf gemini-2.5-flash), what’s the use case of cheaper AI for coding? Getting more errors, or more spaghetti code, seems never worth it.

I feel like if I just do a better job of providing context and breaking complex tasks into a series of simple tasks then most of the models are good enough for me to code.

Re: Claude Haiku 4.5

#86

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.

Opus disappeared for quite a while and then came back. Presumably they're always working on all three general sizes of models, and there's some combination of market need and model capabilities which determine if and when they release any given instance to the public.

Re: Claude Haiku 4.5

#87

> In the system card, we focus on safety evaluations, including assessments of: ... the model’s own potential welfare ... In what way does a language model need to have its own welfare protected? Does this generation of models have persistent "feelings"?

They previously discussed this some in the context of Opus 4: https://www.anthropic.com/research/end-subset-conversations

> We remain highly uncertain about the potential moral status of Claude and other LLMs, now or in the future. However, we take the issue seriously, and alongside our research program we’re working to identify and implement low-cost interventions to mitigate risks to model welfare, in case such welfare is possible. Allowing models to end or exit potentially distressing interactions is one such intervention.

In pre-deployment testing of Claude Opus 4, we included a preliminary model welfare assessment. As part of that assessment, we investigated Claude’s self-reported and behavioral preferences, and found a robust and consistent aversion to harm. This included, for example, requests from users for sexual content involving minors and attempts to solicit information that would enable large-scale violence or acts of terror. Claude Opus 4 showed:

* A strong preference against engaging with harmful tasks;

* A pattern of apparent distress when engaging with real-world users seeking harmful content; and

* A tendency to end harmful conversations when given the ability to do so in simulated user interactions.

These behaviors primarily arose in cases where users persisted with harmful requests and/or abuse despite Claude repeatedly refusing to comply and attempting to productively redirect the interactions.

Re: Claude Haiku 4.5

#90
post #54

I've tried it on a test case for generating a simple SaaS web page (design + code). Usually I'm using GPT-5-mini for that task. Haiku 4.5 runs 3x faster with roughly comparable results (I slightly prefer the GPT-5-mini output but may have just accustomed to it).

I don't understand why more people don't talk about how fast the models are. I see so much obsession with bechmark scores but speed of response is very important for day to day use.

I agree that the models from OpenAI and Google have much slower responses than the models from Anthropic. That makes a lot of them not practical for me.

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