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xAIactive

Grok 4.1 Fast Reasoning

[Grok 4.1 Fast is xAI's best agentic tool calling model that shines in real-world use cases like customer support and deep research. 2M context window. Reasoning can be enabled/disabled using the `reasoning` `enabled` parameter in the API. Learn more in our docs]

grok-4-1-fast-reasoning
Open Relay View integration
relay/request.mjsready to route
const completion = await client.chat.completions.create({
  model: "grok-4-1-fast-reasoning",
  messages: [
    { role: "user",
      content: "Plan a multi-step task" }
  ]
});
policy checked provider selected
CONTEXT200K contextprompt window
MAX OUTPUTN/Aper response
INPUT$0.20 / Mtoken price
OUTPUT$0.50 / Mtoken price

Route configuration_

Use the model through the contract you already have.

PipeLLM resolves provider access, policy, and supported model capabilities without changing the interface your application calls.

ENDPOINThttps://api.pipellm.ai/openaiOpenAI-compatible route
MODEL IDgrok-4-1-fast-reasoningUse this in every request
GOVERNANCEPolicy controlledApprovals and tool rules apply
PROVIDER AVAILABILITY1 route
ProviderContextMax outputInput / MOutput / M
X.AI200K contextN/A$0.20 / M$0.50 / M
Displayed pricing is per one million tokens and may vary by provider.
SUPPORTED SURFACESactive
input: textinput: imageoutput: texttool use

Relay governs model access with the same routing policy that Lens keeps visible and auditable.