o3-mini
Foundation Models · Free + paid
OpenAI's efficient reasoning model for complex tasks
At a glance
- Made by
- OpenAI
- Korean
- UI in Korean
- API
- Yes
- Available on
- Web, iOS, Android, API
What is o3-mini?
OpenAI o3-mini is a cost-efficient small model in OpenAI's reasoning series, released on January 31, 2025. It is described as keeping the low cost and short latency of o1-mini while offering strong STEM capabilities in science, math, and coding. It supports function calling, structured outputs, developer messages, and streaming, and lets you choose the reasoning effort (low, medium, high); it does not support vision. At launch it was available in both ChatGPT and the API, but according to the notice at the top of the page, it is now deprecated in the API.
- Optimized for STEM (science, math, coding) reasoning
- Choice of three reasoning effort levels (low, medium, high)
- Supports function calling
- Supports structured outputs
- Supports developer messages and streaming
- Used with search in ChatGPT
- 24% faster average response than o1-mini
Who uses o3-mini and for what
- Developers use it via the API for coding and STEM reasoning tasks
- ChatGPT users use it to solve coding, STEM, and logic problems
Pricing
What you get for free — Yes (ChatGPT free plan users can also use it by selecting 'Reason', based on the January 2025 launch announcement; no amount is shown on the pricing page)
Checked on the official pages on 2026-10-14. Prices and features can change, so check the official site again before paying. · Official pricing page
AI tools similar to o3-mini (alternatives)
o3-mini vs. alternatives at a glance
| AI | Pricing | Combos on the map | Connected tools | Free | Cheapest monthly | Korean |
|---|---|---|---|---|---|---|
| o3-mini | Free + paid | 0 | 4 | Yes | — | Yes |
| DeepSeek-R1 | Free | 0 | 4 | — | — | No |
| Gemini Thinking | Free + paid | 0 | 4 | Yes | — | Yes |
| QwQ-32B | Free | 0 | 4 | — | — | No |
2 of these 4 tools have a free plan.
Combo and connection counts are based on the relationships recorded on AI Galaxy Map (2026-10-26); they are not a quality ranking.
o3-mini on AI Galaxy Map
- One of 60 AI tools in the Foundation Models field.
- Connected to 4 other tools — #53 in its field.
Frequently asked questions
Can I use o3-mini for free?
Yes (ChatGPT free plan users can also use it by selecting 'Reason', based on the January 2025 launch announcement; no amount is shown on the pricing page). Prices can change, so check the official site before paying.
What AI can I use instead of o3-mini?
Tools that do the same job, such as DeepSeek-R1, Gemini Thinking, QwQ-32B, o1, are connected to it on the map.
Can I use o3-mini in Korean?
UI in Korean
Sources (official pages)
Checked on the official pages on 2026-10-14. Prices and features can change, so check the official site again before paying.