API pricing
xAI
x-ai/grok-4.20
Input / output
$1.25/M
$2.5/M out
Input
$1.25/M
Output
$2.5/M
Context
2M
Updated
2026-10-18
Grok 4.20 API pricing via OpenRouter: $1.25/M input, $2.5/M output, 2M context. Estimate workload cost in the calculator or side-by-side compare.