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grok-4.1-fast-reasoning

Chat
Variant
free premium full-context
Cost×1.4
Minimum planBasic
Context window2,000,000
Latency your local time

Use this model

Base URL https://api.literouter.com/v1
Model grok-4.1-fast-reasoning
API key your LiteRouter API key

Using SillyTavern, Janitor AI, or Chub? See the setup guides.

bash
curl https://api.literouter.com/v1/chat/completions \
  -H "Authorization: Bearer $LITEROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "grok-4.1-fast-reasoning",
    "messages": [{ "role": "user", "content": "Hello!" }]
  }'