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xAI model

Grok 4.20

API pricing per million tokens

grok-4-20 ReasoningChecked 7h ago
Cost calculator Compare
Input
$1.25
per 1M, list
Output
$2.5
per 1M tokens
Cached input
$0.2
no batch tier listed
Context
2M
1.8M max output

Price history

$1$3Apr 1, 2026Output $2.5Input $1.25

List price since Apr 1, 2026, from Internet Archive snapshots of the OpenRouter catalog, then daily reads.

SeenModelChange
May 4, 2026Grok 4.20Input $2 to $1.25, Output $6 to $2.5-37%

Through a gateway

Your own numbers

100M input and 20M output tokens a month: $175.00 direct.

Related models

About Grok 4.20

Grok 4.20 is a reasoning model from SpaceXAI with industry-leading speed and agentic tool calling capabilities.

Takes text, image, files in and returns text. First listed Apr 1, 2026. Blended price $1.56 per 1M tokens at 3 input to 1 output.

OpenRouter listing xAI pricing page
Across fru.devCompany profile2 acquisitions

Questions

How much does Grok 4.20 cost?

$1.25 per million input tokens and $2.5 per million output tokens, with cached input at $0.2.

What is the context window of Grok 4.20?

2M tokens, with up to 1.8M tokens of output.

Where is Grok 4.20 cheapest?

Of 4 routes tracked, xAI is cheapest at $1.25 input and $2.5 output per million tokens.

Has Grok 4.20's price changed?

Yes. The output price went from $6 to $2.5, first seen May 4, 2026.

List prices from providers' pages on the date shown; your contract may differ. Logos via logo.dev; trademarks belong to their owners.

Weekly: LLM API list prices that changed, Thursday mornings.