Claude Haiku 4.5
Claude Haiku 4.5 — Anthropic's fastest, cheapest model for high-volume inference.
| Type | Price / 1M tokens | Notes |
|---|---|---|
| Input | $1.00 | Per 1M input tokens |
| Output | $5.00 | Per 1M output tokens |
| Cache read | $0.10 | Cached prefix read-back |
| Cache write | $1.25 | Anthropic 5m TTL; 2× for 1h TTL |
| Batch API | $0.50 in / $2.50 out | ~50% off, async (up to 24h) |
At $0.80/M input and $4/M output, Haiku 4.5 is the right choice for classification, extraction, and simple Q&A at scale.
Best for
- High-volume classification and extraction
- Simple customer Q&A
- Structured data generation
- Routing layer decisions
Not ideal for
- Complex multi-step reasoning
- Long document analysis
- Creative writing quality
Real cost scenarios
| Scenario | Est. monthly cost | Breakdown |
|---|---|---|
| 10M requests/month — 500 in, 200 out | $4,800 | $4,000 input + $800 output |
| Customer triage — classify 100k tickets/day | $720 | 300-token prompts, short output |
Estimates with typical token distributions. Use the Prompt Cost Calculator for your exact workload.
How to cut costs on Claude Haiku 4.5
- Use batch API for 50% savings — Haiku batch is $0.40/M input, $2/M output.
- Cache system prompts — even at Haiku prices, a 2,000-token system prompt cached at 85% hit rate saves meaningfully at 10M+ calls.
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Frequently Asked Questions
Is Claude Haiku 4.5 good enough for production use?
Yes, for the right tasks. Haiku 4.5 is excellent at extraction, classification, formatting, simple Q&A, and routing. It's comparable to much larger models from a year ago. Where it falls short: tasks requiring multi-step reasoning, nuanced judgment, or creative quality.
What is the difference between Haiku 4.5 and Haiku 3.5?
Haiku 4.5 is generally better at instruction following, tool use, and code generation. Haiku 3.5 is slightly cheaper ($0.80/M vs. exact current pricing). For most new projects, start with Haiku 4.5.
Pricing verified 2026-08-19 from Anthropic official pricing. All prices in USD per 1M tokens. See methodology and price changelog.