[Free] What is OpenAI o3-mini (ChatGPT o3mini high)? Explaining the main features and usage!

OpenAI o3-mini: A cost-effective, high-performance inference model

In recent years, OpenAI has been releasing innovative models, including the GPT series, in particular, for its large-scale language models (LLM). OpenAI has released the latest and cost-effective model, the OpenAI o3-mini, specializing in inference. This fast and powerful model offers high performance in fields such as science, mathematics, and coding, greatly expanding the possibilities of small-scale models.

In this article, we will provide a detailed explanation of the OpenAI o3-mini's overview, features, performance, pricing structure, safety, and future prospects.

table of contents

• What is OpenAI o3-mini?
• What is o3-mini high?
• OpenAI o3-mini pricing structure
• Restrictions on OpenAI o3-mini
• List of usage restrictions by usage plan
• OpenAI o3-mini API pricing
• Price comparison with o1 and o1-mini
• Main features of OpenAI o3-mini
  • Reasoning ability and expertise
  • Speed ​​and efficiency
  • Inference level options
• Performance of OpenAI o3-mini
  • Benchmark results in STEM field
  • Human-in-the-loop evaluation results
  • Latency and performance
• Let's try it out!
  • Examples of actual use of OpenAI o3-mini
  • Examples of actual use of OpenAI o3-mini high
• Safety of OpenAI o3-mini
• Examples of use of OpenAI o3-mini and high
  • Responding to mathematical problems at the University of Tokyo level
  • Applications to game development
  • Applications to music production
  • Comparison of inference ability between o3-mini-high and o1 pro mode
  • Applications to physics simulation
• summary

What is OpenAI o3-mini?

OpenAI o3-mini is the latest inference-specific model developed by OpenAI, and is the newest in the company's inference model series and has excellent cost performance. Its greatest feature is that it exhibits high STEM (science, technology, engineering, mathematics) capabilities while maintaining low cost and low latency. It also supports functions such as function calls, structured output, and developer messages, contributing to increased development efficiency. It also supports streaming and is suitable for applications that require real-time response. The o3-mini is a lightweight version of the OpenAI o3.

What is o3-mini high?

OpenAI o3-mini high is a model with higher inference capabilities than o3-mini. Suitable for use in specialized fields such as complex mathematical analysis, research and development, and large-scale programming. Response times tend to be longer than o3-mini and are for paid users.

Selection screen for o3mini and o3-mini high ChatGPT

OpenAI o3-mini pricing structure

OpenAI o3-mini is available to users of free plans, ChatGPT Plus, Team, and Pro plans. (Access to the Enterprise plan will be scheduled for February). Please refer to the official information for each plan for pricing structure.

Restrictions on OpenAI o3-mini

There is a limit to the number of times OpenAI o3-mini is used. In particular, ChatGPT Plus and ChatGPT Team plans are limited to 150 times per day. As of February 6, 2025, there have been no official restrictions announced for free plans and Pro plans, but there may be restrictions due to past trends.

List of usage restrictions by usage plan

Plan	Restrictions on o3-mini	remarks
ChatGPT Plus	150 times/day	Official announcement
ChatGPT Team	150 times/day	Official announcement
Free plan (speculation)	About 10 times a day?	Speculations from other free services
ChatGPT Pro Plan (Guidelines)	No restrictions?	Speculation based on official announcements

Note: Free and Pro plan restrictions are based on estimates as of February 2025.

OpenAI o3-mini API pricing

The API fees as of January 31, 2025 are as follows:

item	Fee (per million tokens)
input	$1.10
Input (Using cache function)	$0.55
output	$4.40

About prompt caching

Prompts above 1,024 tokens automatically apply prompt caching, reducing input costs by 50% and latency.

Price comparison with o1 and o1-mini

The o3-mini is significantly cheaper than the o1, and is high performance at the same price as the o1-mini.

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