xAI·Grok family

Grok 4.20

proprietaryReleased Feb 2026

xAI's multi-agent capable model with 2M token context window. Available in reasoning, non-reasoning, and multi-agent variants for diverse enterprise workloads.

Capabilities

chatcompletionfunction-callingvisioncode-generationreasoning

Modalities

textimagecode

Context Window

2.0M tokens

Providers

available

Available from 1 provider

Cheapest

xAI

$3.75/1M tokens

xAI

Providers (1)

Sorted by total cost (input + output per 1M tokens). Click a row to view provider details.

Provider	Pricing (per 1M)	Rate Limits	Regions	Health	Latency
xAI	In: $1.25Out: $2.50	300 RPM / 500K TPM	us-east-1global	Healthy	0ms

Quick Start

Use this model via xAI with an OpenAI-compatible SDK.

import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api.xai.com/v1",
  apiKey: process.env.XAI_API_KEY,
});

const response = await client.chat.completions.create({
  model: "grok-4.20-0309-reasoning",
  messages: [
    { role: "user", content: "Hello!" }
  ],
});

console.log(response.choices[0].message.content);

Using xAI API • OpenAI-compatible SDK