Home › Providers › openai › OpenAI: o3 Mini

OpenAI: o3 Mini API Pricing

OpenAI: o3 Mini is an API model from openai. It costs $1.1 per 1M input tokens and $4.4 per 1M output tokens, with cached input at $0.55. Its context window is 200,000 tokens with up to 100,000 output tokens. A workload of 10M input + 2M output tokens costs about $19.8 per month.
Input
$1.1
per 1M tokens
Output
$4.4
per 1M tokens
Cached input
$0.55
per 1M tokens
Context window
200K
200,000 tokens
Blended (80/20)
$1.76
per 1M tokens

OpenAI o3-mini is a cost-efficient language model optimized for STEM reasoning tasks, particularly excelling in science, mathematics, and coding. This model supports the `reasoning_effort` parameter, which can be set to...

How much does OpenAI: o3 Mini cost for a real workload?

At 10M input + 2M output tokens per month, OpenAI: o3 Mini costs about $19.8 ($11 input + $8.8 output). Try your own volumes in the cost calculator.

What are cheaper alternatives to OpenAI: o3 Mini?

Where to run OpenAI: o3 Mini

AI/ML API: one API key for 400+ models, including most models tracked here · Novita AI: pay-as-you-go APIs for open models (DeepSeek, Qwen, Llama and more) plus GPU cloud. Prices there follow each platform's own catalog and can differ from the list prices tracked here.

Run it on AI/ML API →Run it on Novita AI →

Disclosure: links to these platforms may be affiliate links — if you sign up or buy through them, LLMPrices may earn a commission at no extra cost to you.

Compare OpenAI: o3 Mini with other models

OpenAI: o3 Mini vs OpenAI: gpt-oss-20bOpenAI: o3 Mini vs OpenAI: gpt-oss-20b (batch)OpenAI: o3 Mini vs OpenAI: gpt-oss-120b (batch)OpenAI: o3 Mini vs OpenAI: GPT-5 Nano (batch)OpenAI: o3 Mini vs OpenAI: GPT-4.1 Nano (batch)OpenAI: o3 Mini vs OpenAI: GPT-6 Luna Pro (batch)

Frequently asked questions

How much does OpenAI: o3 Mini cost?

OpenAI: o3 Mini costs $1.1 per 1M input tokens and $4.4 per 1M output tokens (list price, snapshot October 22, 2026). At 10M input + 2M output tokens per month that is about $19.8.

What is the context window of OpenAI: o3 Mini?

OpenAI: o3 Mini has a context window of 200,000 tokens and can return up to 100,000 output tokens per response.

What are cheaper alternatives to OpenAI: o3 Mini?

Cheaper models include Google: Gemini 3.5 Flash (batch) ($0.75 in / $4.5 out), OpenAI: GPT Mini Latest ($0.75 in / $4.5 out), OpenAI: GPT-5.4 Mini ($0.75 in / $4.5 out). See the full list on this page.

Is OpenAI: o3 Mini free to use?

No. OpenAI: o3 Mini is a paid model at $1.1 input / $4.4 output per 1M tokens. 21 free models are listed on the free models page.

Provider: openai · Model ID: openai/o3-mini · Modality: text+file->text · Price snapshot October 22, 2026, refreshed daily. How we collect prices