GrokClosed Weights

Grok 4.20 (Reasoning)

grok-4.20-0309-reasoning

Best Input Price

$1.25 / 1M

Reasoning Grok for document-heavy analysis and long-horizon tool use

Context Window

1,000,000 tokens

Reasoning

Supported

Tool Calling

Supported

Released

2026-03-09

Inference Providers (1)

Provider	Model ID	Context	Input / 1M	Output / 1M	Action
xAI	grok-4.20-0309-reasoning	1,000,000	$1.25	$2.50	Docs ↗