How much does o3-mini cost per million tokens?

o3-mini is priced at $1.10 / 1M tokens for input tokens and $4.40 / 1M tokens for output tokens via the official OpenAI API at the time of writing.

What is o3-mini's context window?

o3-mini supports a context window of 200K tokens.

Is o3-mini open source?

No. o3-mini is a closed-weight model, you can use it via OpenAI's API but the model weights are not publicly downloadable.

When was o3-mini released?

o3-mini was released on Jan 31, 2025 by OpenAI.

What is o3-mini's knowledge cutoff?

o3-mini'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 o3-mini cost per million tokens?

o3-mini is priced at $1.10 / 1M tokens for input tokens and $4.40 / 1M tokens for output tokens via the official OpenAI API at the time of writing.

What is o3-mini's context window?

o3-mini supports a context window of 200K tokens.

Is o3-mini open source?

No. o3-mini is a closed-weight model, you can use it via OpenAI's API but the model weights are not publicly downloadable.

When was o3-mini released?

o3-mini was released on Jan 31, 2025 by OpenAI.

What is o3-mini's knowledge cutoff?

o3-mini'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.

ProprietaryOpenAImidtext

o3-mini

Smaller, faster reasoning model, popular as the budget thinking-model option throughout 2025.

UpdatedApr 30, 2026

Quick facts

Released: Jan 2025
Context: 200K tokens
Output / 1M: $4.40 / 1M tokens
License: Proprietary

About o3-mini

o3-mini was the practical entry point to reasoning models for many teams: cheap enough to run in production, smart enough to outperform GPT-4o on most reasoning-heavy tasks. It has been largely replaced by o4-mini for new workloads but remains widely deployed.

Benchmarks

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 We do not publish numbers we cannot source, see methodology.

HumanEval

Python coding pass@1

MMLU

Broad academic knowledge

GPQA

79.7

Graduate-level reasoning

SWE-bench

Real software-engineering tasks

GPQA79.7

Capabilities

Strengths

Reasoning at mid-tier cost
Fast for a thinking model

Tracked weaknesses

No vision support
Superseded by o4-mini for new builds

Pricing

Per-million-token rates as published by OpenAI.

Tier	Price	Notes
Input	$1.10 / 1M tokens	Tokens you send to the model
Output	$4.40 / 1M tokens	Tokens the model generates
Context	200K tokens	Max combined input + output

Call o3-mini 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: "o3-mini",
  messages: [
    { role: "user", content: "What's the time complexity of quicksort?" },
  ],
});

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

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Frequently asked

How much does o3-mini cost per million tokens?
o3-mini is priced at $1.10 / 1M tokens for input tokens and $4.40 / 1M tokens for output tokens via the official OpenAI API at the time of writing.
What is o3-mini's context window?
o3-mini supports a context window of 200K tokens.
Is o3-mini open source?
No. o3-mini is a closed-weight model, you can use it via OpenAI's API but the model weights are not publicly downloadable.
When was o3-mini released?
o3-mini was released on Jan 31, 2025 by OpenAI.
What is o3-mini's knowledge cutoff?
o3-mini'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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