Free & low cost
Claude Haiku 4.5 through the API
Haiku is built for speed and volume: classification, extraction, routing and any task where latency and cost matter more than deep reasoning.
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When Haiku is the right call
- High-volume, low-latency requests.
- Cheap background tasks and pre-processing.
- Stretching your balance on work that does not need Opus.
See also: Claude Sonnet through the API
Mix models on one key
Because every model shares one key and balance, you can route cheap work to Haiku (claude-haiku-4-5) and escalate only the hard requests to Sonnet or Opus.
| Model | Official in / out ($ per 1M) | Here from (−60%) | Best (−80%) |
|---|---|---|---|
| Claude Haiku 4.5 | $1 / $5 | $0.40 / $2 | $0.20 / $1 |
Claude Haiku 4.5 pricing in detail (cache rates, context, FAQ) →
Frequently asked questions
How fast and cheap is Haiku?
Haiku 4.5 is the fastest and lowest-cost Claude model, ideal for high-volume, latency-sensitive work.
Can I combine Haiku with other models?
Yes. One key and balance covers Haiku, Sonnet and Opus, so you can route each task to the best-value model.
Start with Google or GitHub and get $10 of Claude usage at official prices — no card required.