How much does GPT 4 cost?

GPT 4 is billed pay-as-you-go at $6.42 per 1M input tokens and $12.84 per 1M output tokens. There is no subscription — you only pay for what you use.

What is the context window of GPT 4?

GPT 4 supports a context window of up to 8K tokens. It can return up to 4K tokens in a single response.

Is GPT 4 free to use?

GPT 4 is a paid, pay-as-you-go model — no subscription, you are only charged for usage.

How do I use GPT 4 via the API?

GPT 4 is OpenAI-compatible. Point any OpenAI SDK at https://api.airforce/v1 and pass the model ID gpt-4 with your Api.Airforce API key.

GPT 4 is OpenAI's chat model, served through the unified Api.Airforce gateway alongside 100+ other models.

OpenAIPaidOperational

GPT 4

API model name: gpt-4

GPT 4 is OpenAI's chat model, served on the Api.Airforce unified API. It has a 8K-token context window. Capabilities include Tool calling. It is priced at $6.42 per million input tokens and $12.84 per million output tokens. Knowledge cutoff: 2021-09-30. 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

$6.42

Output / 1M tokens

$12.84

Specifications

Provider: OpenAI
Type: chat model
Context window: 8K tokens
Max output: 4K tokens
Knowledge cutoff: 2021-09-30
Input: text
Output: text

Capabilities

Tool callingStreaming

What is GPT 4 used for?

Chatbots & assistants — conversational AI, drafting, summarizing and Q&A.
Agents & automation — function calling and tool use for multi-step workflows.
Real-time experiences — stream tokens for responsive chat and apps.

GPT 4 vs. similar models

Model	Intelligence	Context	Input / 1M	Output / 1M
GPT 4	—	8K	$6.42	$12.84
GPT 3.5	—	—	$1.11	$3.30
GPT 3.5 Turbo 16k	—	—	$6.99	$14.01
GPT 4	—	—	$2.13	$4.29

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

GPT 4 — frequently asked questions

How much does GPT 4 cost?: GPT 4 is billed pay-as-you-go at $6.42 per 1M input tokens and $12.84 per 1M output tokens. There is no subscription — you only pay for what you use.
What is the context window of GPT 4?: GPT 4 supports a context window of up to 8K tokens. It can return up to 4K tokens in a single response.
What can GPT 4 do?: GPT 4 supports Tool calling.
Is GPT 4 free to use?: GPT 4 is a paid, pay-as-you-go model — no subscription, you are only charged for usage.
How do I use GPT 4 via the API?: GPT 4 is OpenAI-compatible. Point any OpenAI SDK at https://api.airforce/v1 and pass the model ID gpt-4 with your Api.Airforce API key.
Who makes GPT 4?: GPT 4 is OpenAI's chat model, served through the unified Api.Airforce gateway alongside 100+ other models.

All models·Quickstart·Chat API reference

Use GPT 4 via the API

OpenAI-compatible — point any OpenAI SDK at https://api.airforce/v1 and pass gpt-4 as the model.

cURL

curl https://api.airforce/v1/chat/completions \
  -H "Authorization: Bearer $AIRFORCE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-4",
    "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="gpt-4",
    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: "gpt-4",
  messages: [{ role: "user", content: "Hello!" }],
});
console.log(r.choices[0].message.content);