Grok 4 Fast
xAI · grok-4 · Released 2025-09
Reasoning
Tools
Structured output
text
image
Context window
256K
Max output
33K
License
Proprietary
Pricing (indicative)
Per M input tokens
$0.2
Per M output tokens
$0.5
Prices may change; always confirm from the official source.
Same family
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