Grok 4 Fast Non-Reasoning

by xAI · chat

Low-latency, non-reasoning variant of Grok 4 Fast with 2M context window. Provides instant responses without extended thinking, supporting function calling and structured outputs.

Pricing

Input: $0.19/M tokens · Output: $0.475/M tokens

Capabilities

Vision, Function Calling, JSON Mode, Streaming

Context: 2000K tokens

Max output: 16K tokens

Routes: 2/2 healthy