Grok 4.6 API cost calculator
Grok 4.6 (Grok (xAI)) is priced at $2 per million input tokens, $0.5 for cached input, and $6 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 4.6 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. | $0.0057 | $28.50 | $855 |
| RAG over documentsRetrieved context dominates — 12k in, 500 out, 30% cached. | $0.022 | $32.40 | $972 |
| Coding agentGrowing context every turn — 20k in, 1.5k out, 80% cached. | $0.025 | $75.00 | $2,250 |
| Batch classificationTiny prompts at volume through the Batch API — 800 in, 20 out. | $0.0017 | $344 | $10,320 |
Its blast radius when an agent loops
The coding-agent workload above at 30 requests a minute — $45.00 an hour — priced at each point a team usually finds out:
Hourly alert
$45.00
Next morning
$1,080
After a weekend
$2,700
Monthly invoice
$32,400