Grok 4.1 Fast

x-ai/grok-4.1-fast

Try model

Overview Pricing API integration

Overview

Model description: original source language.

Grok 4.1 Fast 是 xAI 最好的代理工具调用模型，在客户支持和深入研究等实际应用场景中表现出色。200 万上下文窗口。

Textx-ai

Pricing

Pricing follows the current settings of your account group.

View available groups

API integration

Use a Yunhai API key to call configured models.

curl "$YUNHAI_BASE_URL/chat/completions" \
  -H "Authorization: Bearer $YUNHAI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"x-ai/grok-4.1-fast","messages":[{"role":"user","content":"你好"}]}'