How much does Grok 4.20 cost?

Grok 4.20 is billed pay-as-you-go at $3.12 per 1M input tokens and $9.33 per 1M output tokens. There is no subscription — you only pay for what you use.

What can Grok 4.20 do?

Grok 4.20 is xAI's chat model, accessible through the Api.Airforce API.

Is Grok 4.20 free to use?

Grok 4.20 is a paid, pay-as-you-go model — no subscription, you are only charged for usage.

How do I use Grok 4.20 via the API?

Grok 4.20 is OpenAI-compatible. Point any OpenAI SDK at https://api.airforce/v1 and pass the model ID grok-4.20-0309 with your Api.Airforce API key.

Grok 4.20 is xAI's chat model, served through the unified Api.Airforce gateway alongside 100+ other models.

xAIPaidOperational

Grok 4.20

API model name: grok-4.20-0309

Grok 4.20 is xAI's chat model, served on the Api.Airforce unified API. It is priced at $3.12 per million input tokens and $9.33 per million output tokens. Access it through the OpenAI-compatible API with one key, alongside 100+ other models on Api.Airforce.

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Pricing

Input / 1M tokens

$3.12

Output / 1M tokens

$9.33

Cache read / 1M tokens

$0.30

Specifications

Provider: xAI
Type: chat model

What is Grok 4.20 used for?

Chatbots & assistants — conversational AI, drafting, summarizing and Q&A.

Grok 4.20 vs. similar models

Model	Intelligence	Context	Input / 1M	Output / 1M
Grok 4.20	—	—	$3.12	$9.33
Grok 2 Vision	—	—	$3.12	$15.57
Grok 3	—	—	$0.45	$2.25
Grok 3 Deepsearch	—	—	$0.42	$2.13

Prices are Api.Airforce pay-as-you-go rates per 1M tokens. Context is the maximum input length.

Grok 4.20 — frequently asked questions

How much does Grok 4.20 cost?: Grok 4.20 is billed pay-as-you-go at $3.12 per 1M input tokens and $9.33 per 1M output tokens. There is no subscription — you only pay for what you use.
What can Grok 4.20 do?: Grok 4.20 is xAI's chat model, accessible through the Api.Airforce API.
Is Grok 4.20 free to use?: Grok 4.20 is a paid, pay-as-you-go model — no subscription, you are only charged for usage.
How do I use Grok 4.20 via the API?: Grok 4.20 is OpenAI-compatible. Point any OpenAI SDK at https://api.airforce/v1 and pass the model ID grok-4.20-0309 with your Api.Airforce API key.
Who makes Grok 4.20?: Grok 4.20 is xAI's chat model, served through the unified Api.Airforce gateway alongside 100+ other models.

All models·Quickstart·Chat API reference

Use Grok 4.20 via the API

OpenAI-compatible — point any OpenAI SDK at https://api.airforce/v1 and pass grok-4.20-0309 as the model.

cURL

curl https://api.airforce/v1/chat/completions \
  -H "Authorization: Bearer $AIRFORCE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "grok-4.20-0309",
    "messages": [{ "role": "user", "content": "Hello!" }]
  }'

Python

from openai import OpenAI
client = OpenAI(base_url="https://api.airforce/v1", api_key="$AIRFORCE_API_KEY")
r = client.chat.completions.create(
    model="grok-4.20-0309",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(r.choices[0].message.content)

JavaScript

import OpenAI from "openai";
const client = new OpenAI({ baseURL: "https://api.airforce/v1", apiKey: process.env.AIRFORCE_API_KEY });
const r = await client.chat.completions.create({
  model: "grok-4.20-0309",
  messages: [{ role: "user", content: "Hello!" }],
});
console.log(r.choices[0].message.content);