ReadyIntel TDX

xAI: Grok 4.1 Fast

Model IDx-ai/grok-4.1-fast

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.

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input

$0.20/M

output

$0.50/M

context

created

Dec 13, 2025

Supported API shape

input

text · image

output

text

tools

Supported

json mode

Supported

Verification

signature

response ID

attestation

Intel TDX

provider

1 routes

Providers

x-ai

TDX route

input

$0.20/M

output

$0.50/M

context

$ pip install openai

1from openai import OpenAI
2import os
3
4MODEL = "x-ai/grok-4.1-fast"
5
6client = OpenAI(
7    base_url="https://api.redpill.ai/v1",
8    api_key=os.environ["REDPILL_API_KEY"],
9)
10
11response = client.chat.completions.create(
12    model=MODEL,
13    messages=[{"role": "user", "content": "Run this privately."}],
14)
15
16print(response.id)
17print(response.choices[0].message.content)

$ npm install openai

1import OpenAI from "openai"
2
3const MODEL = "x-ai/grok-4.1-fast"
4
5const openai = new OpenAI({
6  baseURL: "https://api.redpill.ai/v1",
7  apiKey: process.env.REDPILL_API_KEY,
8})
9
10const response = await openai.chat.completions.create({
11  model: MODEL,
12  messages: [{ role: "user", content: "Run this privately." }],
13})
14
15console.log(response.id)
16console.log(response.choices[0].message.content)

1curl https://api.redpill.ai/v1/chat/completions \
2  -H "Authorization: Bearer $REDPILL_API_KEY" \
3  -H "Content-Type: application/json" \
4  -d '{
5    "model": "x-ai/grok-4.1-fast",
6    "messages": [
7      { "role": "user", "content": "Run this privately." }
8    ]
9  }'

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