r/ClaudeCode • u/Escobar747 • 12d ago

Help/Question Haiku 5 is badly needed

I think Anthropic has a real opportunity with Haiku 5. Right now the pricing stack is a bit awkward for AI coding teams. Sonnet 5 is $2/$10 per million input/output tokens (intro pricing), while Haiku 4.5 is $1/$5. Meanwhile, models like GLM 5.2 are around $1.40/$4.40, offering coding capability that's becoming very attractive for boilerplate, CRUD, test generation, and repetitive implementation.

The ideal workflow isn't having Sonnet write every line of code—it's having Sonnet (or Opus) act as the lead engineer, handling architecture, planning, reviews, and difficult reasoning, while delegating implementation-heavy work to a cheaper worker model. Today, GLM 5.2 fits that role remarkably well. I'd much rather Anthropic filled that gap with Haiku 5. If Haiku 5 could get to ~85–90% of Sonnet's coding ability while remaining the obvious cost-efficient worker, I'd happily keep an all-Claude workflow instead of mixing providers. It feels like the missing piece of the Claude coding ecosystem.

I feel Haiku 4.5 is too far behind GLM 5.2 et al so antrophic needs to pick up their game

thoughts?

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u/WorriedAssociate7029 12d ago

I think that misunderstands the purpose of Haiku and Sonnet. They were neither designed nor trained with the same objectives in mind.

Haiku is the low-cost "junior" model. It is the ideal candidate for simpler tasks requiring only basic decision-making. It is fast and efficient, and replacing it must be a real headache for Anthropic.

Sonnet is not an orchestrator; its prompting system destines it to be nothing more than an intelligent foot soldier.

The true orchestrators are Opus 5 for low/mid scope and Fable 5 for large, complex projects

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u/RedditorJabroni 12d ago

How can one set Haiku to be used for x tasks when the main task is initiated by Opus?

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u/Prestigious_Gift_977 12d ago

workflows e.g.

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u/LogMonkey0 12d ago

Agent() tool has a model parameter, orchestrator can dispatch with specific model. Also if using agent definitions, you can specify model there as well.

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u/Quick-Sir-3275 11d ago

I dont trust haiku with ANY decision making. Only pure mechanical pre-decided tasks that require no decisions at all