Grok Build 0.1 API cost calculator
Grok Build 0.1 (Grok (xAI)) is priced at $1 per million input tokens, $0.2 for cached input, and $2 per million output tokens. Verified 2026-09-17 against Grok (xAI)'s pricing page.
Requests with 200k or more input tokens are billed at twice these rates.
What Grok Build 0.1 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. | $0.0024 | $11.80 | $354 |
| RAG over documentsRetrieved context dominates — 12k in, 500 out, 30% cached. | $0.010 | $15.18 | $455 |
| Coding agentGrowing context every turn — 20k in, 1.5k out, 80% cached. | $0.010 | $30.60 | $918 |
| Batch classificationTiny prompts at volume through the Batch API — 800 in, 20 out. | $0.0008 | $168 | $5,040 |
Its blast radius when an agent loops
The coding-agent workload above at 30 requests a minute — $18.36 an hour — priced at each point a team usually finds out:
Hourly alert
$18.36
Next morning
$441
After a weekend
$1,102
Monthly invoice
$13,219