xAI Grok-4 Series

by xAI

All Grok-4 models are proprietary and accessed via the xAI API. The pricing structure clearly reflects the trade-off between intelligence and cost. The premium models, Grok-4 and Grok-4.1, are priced at $3.00 per million input tokens and $15.00 per million output tokens. The highly cost-efficient "Fast" variants, Grok 4 Fast and Grok-4.1 Fast, are priced at just $0.20 per million input tokens and $0.50 per million output tokens, making them exceptionally competitive for high-throughput automati