I’m a heavy Claude user: Code, chat, Cowork, the whole stack. Opus and Sonnet are my daily drivers for pretty much everything, from agentic coding sessions to document work to automation planning. But Haiku? I barely touch it. Like, almost never. And I’m starting to wonder if I’m leaving value on the table. I know the obvious pitch: it’s faster and cheaper. But in practice, what does that actually translate to for you? I’m curious about real usage patterns, not marketing bullet points. Some things I’d love to hear about: What tasks do you consistently route to Haiku instead of Sonnet? And do you actually notice a quality difference, or is it negligible for those use cases? For those using it in Claude Code: how does it hold up for things like quick refactors, linting, file edits, simple scripts? Or does it fall apart the moment context gets non-trivial? Where are the real limits? Like, where does it clearly break down and you go “yeah, this needs Sonnet minimum”? Anyone built routing logic around it? (e.g. triage with Haiku, heavy lifting with Sonnet/Opus. For context: I did build a small tool with Claude Code that uses Haiku to analyze my coding sessions and auto-rename them. Works surprisingly well for that. But that’s basically the extent of my Haiku usage, and I have this feeling I’m not using it anywhere near its full potential. I’ve been building a model routing tool for my own workflow and I realized I have almost zero firsthand data on Haiku’s actual strengths and failure modes. Most of what I read is either “it’s great for the price” or “just use Sonnet” neither is very useful. Would appreciate hearing from people who’ve actually put it through its paces. submitted by /u/samuel-gudi
Originally posted by u/samuel-gudi on r/ClaudeCode
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