Grok 4.20

Updated Sep 11, 2026

grok2.0M context1.8M max outputreleased Mar 31, 2026ReasoningTool calling

Cheapest input

$1.25

Cheapest output

$2.5

Official

—

output per 1M tokens

Providers

4

offering this model

Spread

2.4×

max / min output

Offers

Metered per-token prices. Cheapest input and output are highlighted; † marks a context-tier surcharge.

Provider	1M input	1M output	1M cache read	1M cache write	Context
Merge Gateway	Cheapest^†$1.25	Cheapest$2.5	$0.2	—	1.0M
OpenRouter	^†$1.25	$2.5	$0.2	—	2.0M
Venice AI	^†$1.42	$2.83	$0.23	—	2.0M
NanoGPT	$2	$6	$1	—	2.0M

Other grok models