invokeable()
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Grok 4 Fast

model grok-4-fast

Draft entry — numbers not yet verified against primary sources.

2M
context
64K
max output
$0.20/M
input
$0.50/M
output
2025-06
knowledge cutoff
2
providers

01Providers

ProviderProvider model IDIn $/MOut $/MContextStatus
xAI API grok-4-fast 0.20 0.50 2M live
OpenRouter x-ai/grok-4-fast 0.20 0.50 2M live

Dimmed prices are canonical — this provider's own quote isn't captured yet.

02Invoke

provider
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03Related
Grok 4.62026-08Grok 4.52026-07Grok 4.32026-04Grok 4.20 (Non-Reasoning)2026-03Grok 4.20 (Reasoning)2026-03Grok 4.1 Fast2025-11


04Sources · where these numbers come from
  1. https://docs.x.ai/docs/models
  2. https://x.ai/news
  3. https://docs.x.ai
  4. https://openrouter.ai/docs
  5. https://openrouter.ai/x-ai/grok-4-fast