How much does Gpt 5.3 Codex cost?

Gpt 5.3 Codex is billed pay-as-you-go at $0.50 per 1M input tokens and $4.00 per 1M output tokens. There is no subscription — you only pay for what you use.

What can Gpt 5.3 Codex do?

Gpt 5.3 Codex is OpenAI's chat model, accessible through the Api.Airforce API.

Is Gpt 5.3 Codex free to use?

Gpt 5.3 Codex is a paid, pay-as-you-go model — no subscription, you are only charged for usage.

How do I use Gpt 5.3 Codex via the API?

Gpt 5.3 Codex is OpenAI-compatible. Point any OpenAI SDK at https://api.airforce/v1 and pass the model ID gpt-5.3-codex with your Api.Airforce API key.

Who makes Gpt 5.3 Codex?

Gpt 5.3 Codex is OpenAI's chat model, served through the unified Api.Airforce gateway alongside 100+ other models.

OpenAIPaidOperational

Gpt 5.3 Codex

API model name: gpt-5.3-codex

Gpt 5.3 Codex is OpenAI's chat model, served on the Api.Airforce unified API. It is priced at $0.50 per million input tokens and $4.00 per million output tokens. That is below the provider's $1.75 official input rate. Access it through the OpenAI-compatible API with one key, alongside 100+ other models on Api.Airforce.

Get an API key View pricing

Pricing

Input / 1M tokens

$0.50

Output / 1M tokens

$4.00

Official input rate

$1.75

Official output rate

$14.00

Api.Airforce price vs. the provider's official rate.

Specifications

Provider: OpenAI
Type: chat model

Benchmarks

Independent evaluations and measured speed from Artificial Analysis.

Intelligence Index

53.6/100

Coding Index

53.1/100

GPQA Diamond92%

Humanity's Last Exam40%

Output speed86.8 tok/s

Source: Benchmark data by Artificial Analysis (artificialanalysis.ai)

What is Gpt 5.3 Codex used for?

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

Gpt 5.3 Codex vs. similar models

Model	Intelligence	Context	Input / 1M	Output / 1M
Gpt 5.3 Codex	53.6	—	$0.50	$4.00
Gpt 3.5	—	—	$1.71	$3.42
Gpt 3.5 Turbo 16k	—	—	$10.26	$20.52
Gpt 4	—	8K	$6.42	$12.84

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

Gpt 5.3 Codex — frequently asked questions

How much does Gpt 5.3 Codex cost?: Gpt 5.3 Codex is billed pay-as-you-go at $0.50 per 1M input tokens and $4.00 per 1M output tokens. There is no subscription — you only pay for what you use.
What can Gpt 5.3 Codex do?: Gpt 5.3 Codex is OpenAI's chat model, accessible through the Api.Airforce API.
Is Gpt 5.3 Codex free to use?: Gpt 5.3 Codex is a paid, pay-as-you-go model — no subscription, you are only charged for usage.
How do I use Gpt 5.3 Codex via the API?: Gpt 5.3 Codex is OpenAI-compatible. Point any OpenAI SDK at https://api.airforce/v1 and pass the model ID gpt-5.3-codex with your Api.Airforce API key.
Who makes Gpt 5.3 Codex?: Gpt 5.3 Codex is OpenAI's chat model, served through the unified Api.Airforce gateway alongside 100+ other models.

All models·Quickstart·Chat API reference

Use Gpt 5.3 Codex via the API

OpenAI-compatible — point any OpenAI SDK at https://api.airforce/v1 and pass gpt-5.3-codex 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-5.3-codex",
    "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-5.3-codex",
    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-5.3-codex",
  messages: [{ role: "user", content: "Hello!" }],
});
console.log(r.choices[0].message.content);