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Grok 4 Fast Non-Reasoning

Grok 4 without reasoning for faster responses.

grok-4-fast-non-reasoning
STABLE
2,000,000 context
Starting at $0.20/M input tokens
Starting at $0.50/M output tokens
Streaming
Vision
Tools
JSON Output

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xAI

xai/grok-4-fast-non-reasoning
Context Size
2M
Stability
STABLE
Pricing
Input
$0.20
/M
Cached
$0.05
/M
Output
$0.50
/M
Tiered Pricing
≤128K tokens$0.20 in / $0.50 out
>128K tokens$0.40 in / $1.00 out
Capabilities
Streaming
Vision
Tools
JSON Output
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