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Grok 4.20 Beta Reasoning (0309)

Grok 4.20 reasoning model with vision and tool support.

xai/grok-4-20-beta-0309-reasoning

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Streaming

Vision

Tools

Reasoning

JSON Output

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xAI Pricing for Grok 4.20 Beta Reasoning (0309)

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xAI

Context: 2M

Input

$2

/M tokens

Cached

$0.2

/M tokens

Output

$6

/M tokens

Tiered pricing available

IN

Cached

OUT

<= 200K tokens

$2

$0.2

$6

>200K tokens

$4

$0.4

$12