Claude Haiku 5.5

sfkgtbor 790 points 389 comments October 07, 2026
www.anthropic.com · View on Hacker News

Discussion Highlights (20 comments)

TheAmazingRace

I wonder if we have an AI LLM equivalent to Moore's Law. Like how often do we expect improvement in this technology and with what timing?

sfkgtbor

Happy about the Sonnet cache read price cut.

minimaxir

Pricing is...a bit weird. Input $0.10 / MTok for prompts up to 100,000 tokens $0.50 / MTok for prompts over 100,000 tokens Output $0.50 / MTok for prompts up to 100,000 tokens $2.50 / MTok for prompts over 100,000 tokens 100k tokens is an absurdly low cutoff and it is only applicable to Haiku and not Sonnet or Opus. It's a low enough cutoff that it will be quickly exceeded if you are doing anything with Agents; for typical generation or Jev-like classifiers, it's a good value and as noted in this article, that is apparently the vast majority of Haiku use. In both cases, still much cheaper than Haiku 4.5's $1 input / $5 output and these prices better compete with GPT-6 Luna. ($0.10 input / $0.50 output, but with no token threshold [EDIT: the threshold for Luna is apparently 272k])

maz1b

Wow, the rate of improvements in the AI era is staggering. GDPval-AA v2.1 as of now: 1620 GDPval-AA v2.1 for Haiku 4.5: 735 The 100k tokens pricing makes sense, looks to be a hedge against OpenAI's decisions API and Jev or its open source alternatives that are springing up. Nice release, congrats to Anthropic.

sroussey

It’s about time Haiku got an update!

iagocc

Where is Pelican? ehehhe

TomGarden

From these selected benchmarks, it looks like it smokes Luna capability-wise. Excited to put it through its paces

margorczynski

How does the price compare to Luna? At least looking at the numbers it is noticeably better at most tasks.

simianwords

I remember a friend asking me why LLMs suck so bad. She was using Haiku 4.5 and that poor model couldn't keep track of the context within 3 messages. She said she was using Haiku 4.5 because she was advised to be careful with the spending. I hate that model so much lol.

seaal

The monthly API credits for Max plan seems fantastic, especially considering Haiku pricing. Being able to actually use my Claude plan for other harnesses and use-cases on top of regular CC usage is everything I wanted. Anthropic has really been doing all the right things in the past few weeks, while OpenAI continues to fumble the bag.

patrickwdaly

How are y'all using Haiku though? I rarely select it.

tpoacher

Good to see Anthropic back alternative OSes.

afrnswrth

The important question though...how does it do making a pelican on a bicycle?

caaqil

> Haiku 5.5’s cybersecurity safeguards are more restrictive than Haiku 4.5’s, but somewhat less restrictive than those we’ve applied to other recent models. In cybersecurity, they permit a wider range of defensive tasks than our safeguards for Sonnet 5.5, but they still block penetration testing and other techniques more likely to be used by attackers. If you block pentest or "other techniques more likely to be used by attackers", then what does "permit a wider range of defensive tasks" even mean? Any defensive task that's meaningful is almost indistinguishable from legitimate red-teaming that then falls under 'likely to be used by attackers". If only they would just stop nerfing these models, that'd be great. No APT is waiting around for Anthropic's permission, so might as well let us have some cool stuff.

simianwords

> Second, this week, we’ll roll out a new monthly API credit to all Max and Team subscribers for use on the Claude Platform. Max 5x users will get $100 in credits per month, Max 20x users will get $200, and Team subscribers will receive up to $500, pooled across their users. These credits are designed to allow our users to experiment with building tools, apps, and agents that call our API. They can be used on any of our models. For more information, see our Help Center article. Did anyone read this? We get free API credits on some plans now

swalsh

Top of the page in 17 minutes? Now I know what y'all do while your agents are working.

AtNightWeCode

Probably the same scam as the last Haiku update I guess. Uses more tokens to compensate for the lower price.

charlesabarnes

> Second, this week, we’ll roll out a new monthly API credit to all Max and Team subscribers for use on the Claude Platform. Max 5x users will get $100 in credits per month, Max 20x users will get $200, and Team subscribers will receive up to $500, pooled across their users This is a very big benefit for me. I can now ship actual ai enhanced features behind my subscription without paying extra or fully relying on on-device models. I do worry that this is to soften the blow for user-unfriendly changes

vickyonlinecont

Does anyone still use Haiku model?

crooked-v

The important question is, does it talk in incomprehensible Claude-ese like the other Claude 5.x models?

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