Grok 4

Chat Completions

grok-4-0709

xAI|Created Jul 10, 2025|256k context

Chat Completions

Grok 4 is xAI’s latest reasoning model, featuring a 256k context window and support for parallel tool calling, structured outputs, and both image and text inputs. Designed for high-throughput, complex reasoning tasks, with pricing that scales for large token requests.

Overview Specifications Activity Performance Uptime Examples

Pricing-50%

Pay-as-you-go rates for this model. More details can be found here.

Input Tokens (1M)

$2.25

Cached Input Tokens (1M)

$0.38

Output Tokens (1M)

$11.25

Capabilities

Input Modalities

TextImage

Output Modalities

Text

Supported Parameters

Available parameters for API requests

Max Completion TokensResponse FormatTemperatureTool ChoiceToolsTop PWeb Search Options