Grok 4.20 (Reasoning)

xAI · Flagship Models

#1231.6

Grok 4.20 (Reasoning) is xAI's reasoning-capable model: $1.25/$2.50 per 1M input/output tokens, 1M token context window. It supports native tool calling, extended reasoning, image/file input. Released 2026-03-09.

Under reviewVerified Jun 10, 2026MultimodalLong Context

Input Price

$1.25

Output Price

$2.5

Cache Read Price

$0.2

Context Window

1M

All metrics

MetricValueProvenance receipt
Input Price$1.25
Output Price$2.5
Cache Read Price$0.2
Context Window1M
Max Output Tokens30K
Tool CallingYes
Extended ReasoningYes

Pricing

Pay-as-you-go API

$1.25per 1M input tokens

Output
$2.5 / 1M tokens
Cache read
$0.2 / 1M tokens
Under reviewChecked Jun 10, 2026
Official pricing →

Data sources

Facts on this page are sourced from the following verified sources.

All sources are verified before data goes live.

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