xAIActive
grok-4-fast-non-reasoning
Fast Grok model for responsive chat, reasoning, and tool-assisted work
Context
2,000,000
Max output
2,000,000
Input / 1M
$0.18
Output / 1M
$0.45
Providers
6
01Profile
Profile
Released
2025-09-23
Last updated
2026-01
Knowledge cutoff
2025-06
Weights
Closed
02Capabilities
Capabilities
Input
text · image
Output
text
Reasoning
No
Tool calling
Yes
Structured output
No
Attachments
Yes
Cache read
—
Cache write
—
03Pricing
Pricing across 5 providers
Per 1M tokens, USD. Sorted by input price. First-party row highlighted.
04History
Change history
12+ recent events since 2025-09-23
2026-05-16Removedazureofferingremoved→ new
2026-05-16Removedllmgatewayofferingremoved→ new
2026-05-16Removedxaiofferingremoved→ new
2026-04-18Price upllmgatewayinput / 1M$0.20→ new
2026-04-18Price upllmgatewayoutput / 1M$0.50→ new
2026-04-18ContextllmgatewayContext window2,000,000→ new
2026-04-18ContextllmgatewayMax output30,000→ new
2026-04-17Price upazureinput / 1M$0.20→ new
2026-04-17Price upazureoutput / 1M$0.50→ new
2026-04-17ContextazureContext window2,000,000→ new
2026-04-17ContextazureMax output30,000→ new
2026-03-23Price cutllmgatewayinput / 1M$0.40→ $0.20