How much does GPT-4o cost per million tokens?

GPT-4o is priced at $2.50 / 1M tokens for input tokens and $10.00 / 1M tokens for output tokens via the official OpenAI API at the time of writing.

What is GPT-4o's context window?

GPT-4o supports a context window of 128K tokens.

Is GPT-4o open source?

No. GPT-4o is a closed-weight model, you can use it via OpenAI's API but the model weights are not publicly downloadable.

When was GPT-4o released?

GPT-4o was released on May 13, 2024 by OpenAI.

What is GPT-4o's knowledge cutoff?

GPT-4o's training data has a knowledge cutoff of Oct 2023. For information after that date you'll need a tool-use or web-search wrapper.

How much does GPT-4o cost per million tokens?

GPT-4o is priced at $2.50 / 1M tokens for input tokens and $10.00 / 1M tokens for output tokens via the official OpenAI API at the time of writing.

What is GPT-4o's context window?

GPT-4o supports a context window of 128K tokens.

Is GPT-4o open source?

No. GPT-4o is a closed-weight model, you can use it via OpenAI's API but the model weights are not publicly downloadable.

When was GPT-4o released?

GPT-4o was released on May 13, 2024 by OpenAI.

What is GPT-4o's knowledge cutoff?

GPT-4o's training data has a knowledge cutoff of Oct 2023. For information after that date you'll need a tool-use or web-search wrapper.

ProprietaryOpenAImidtextvisionaudio

GPT-4o

OpenAI's first natively-multimodal model, voice, vision, and text in one network.

UpdatedApr 30, 2026

Quick facts

Released: May 2024
Context: 128K tokens
Output / 1M: $10.00 / 1M tokens
License: Proprietary

About GPT-4o

GPT-4o was the May 2024 release that made native multimodality the default for OpenAI users. It powered the original Realtime voice API, the first ChatGPT voice mode rollout, and a generation of multimodal product launches.

It remains in heavy production use throughout 2026 because of API stability, many integrations were built and validated against it before GPT-5 shipped.

Benchmarks

Published scores from OpenAI's model card or independent leaderboards. We do not publish numbers we cannot source, see methodology.

HumanEval

90.2

Python coding pass@1

MMLU

88.7

Broad academic knowledge

GPQA

Graduate-level reasoning

SWE-bench

Real software-engineering tasks

MMLU88.7
HumanEval90.2

Capabilities

Strengths

Native multimodal
Mature SDK and tooling

Tracked weaknesses

Superseded by GPT-5 for new builds

Pricing

Per-million-token rates as published by OpenAI.

Tier	Price	Notes
Input	$2.50 / 1M tokens	Tokens you send to the model
Output	$10.00 / 1M tokens	Tokens the model generates
Context	128K tokens	Max combined input + output

Call GPT-4o from your code

Drop-in snippet for the OpenAI SDK. Set your API key in the environment and run.

typescript

import OpenAI from "openai";

const client = new OpenAI({
  // Use OPENAI_API_KEY for OpenAI, or your provider's key + baseURL.
  apiKey: process.env.OPENAI_API_KEY,
});

const completion = await client.chat.completions.create({
  model: "gpt-4o",
  messages: [
    { role: "user", content: "What's the time complexity of quicksort?" },
  ],
});

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

Compare GPT-4o with…

Frequently asked

How much does GPT-4o cost per million tokens?
GPT-4o is priced at $2.50 / 1M tokens for input tokens and $10.00 / 1M tokens for output tokens via the official OpenAI API at the time of writing.
What is GPT-4o's context window?
GPT-4o supports a context window of 128K tokens.
Is GPT-4o open source?
No. GPT-4o is a closed-weight model, you can use it via OpenAI's API but the model weights are not publicly downloadable.
When was GPT-4o released?
GPT-4o was released on May 13, 2024 by OpenAI.
What is GPT-4o's knowledge cutoff?
GPT-4o's training data has a knowledge cutoff of Oct 2023. For information after that date you'll need a tool-use or web-search wrapper.

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