Claude Haiku 5.5 API cost calculator
Claude Haiku 5.5 (Anthropic) is priced at $0.1 per million input tokens, $0.01 for cached input, and $0.5 per million output tokens — half that through the Batch API. Verified 2026-10-01 against Anthropic's pricing page.
Standard tier for prompts up to 100,000 tokens; prompts over 100K are billed at 5× ($0.50 in, $2.50 out per million tokens) — the only current Claude model with a long-context tier.
What Claude Haiku 5.5 costs for common workloads
| Workload | Per request | Per day | Per month |
|---|---|---|---|
| Support chatbotShort turns with a reused system prompt — 3k in, 400 out, 60% cached. | $0.0003 | $1.69 | $50.70 |
| RAG over documentsRetrieved context dominates — 12k in, 500 out, 30% cached. | $0.0011 | $1.69 | $50.67 |
| Coding agentGrowing context every turn — 20k in, 1.5k out, 80% cached. | $0.0013 | $3.93 | $118 |
| Batch classificationTiny prompts at volume through the Batch API — 800 in, 20 out. | $0.0000 | $9.00 | $270 |
Its blast radius when an agent loops
The coding-agent workload above at 30 requests a minute — $2.36 an hour — priced at each point a team usually finds out:
Hourly alert
$2.36
Next morning
$56.59
After a weekend
$141
Monthly invoice
$1,698