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vertex_ai/xai/grok-4.1-fast-reasoning

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vertex_ai/xai/grok-4.1-fast-reasoning

Input

$0.2000

per 1M input tokens

Output

$0.5000

per 1M output tokens

Cache read

$0.0500

per 1M cached read tokens

Cache write

n/a

per 1M cache write tokens

Context window

128,000

Max output

128,000

Effective date

Sep 10, 2026

Estimate a workload

Enter token counts to see the cost at this model's rates.

Estimated cost: $0.00

Price history

blended $ per 1M tokens (3:1)
$0.00 $0.48 $0.95 $1.43 Jun 15, 2026: $0.28 Sep 10, 2026: $0.28 Jun 15, 2026 Sep 10, 2026
Effective Input Output Blended
Sep 10, 2026 $0.20 $0.50 $0.28
Jun 15, 2026 $0.20 $0.50 $0.28

Other Google models

vertex_ai/gemini-3.5-transcribe · $12.00/Mtok out vertex_ai/gemini-3.5-transcribe-live · $21.00/Mtok out gemini/gemma-4-26b-a4b-it · $0.0000/Mtok out gemini/gemma-4-31b-it · $0.0000/Mtok out gemini-flash-experimental · $0.0000/Mtok out gemini/gemini-exp-1114 · $0.0000/Mtok out

Source: litellm. Confirm against the provider's official pricing before relying on these figures.