OpenAI o3-mini
OpenAI
OpenAI's small reasoning model (January 2025) optimized for STEM - science, math, and coding - at low cost and latency. o3-mini supports tool use and adjustable reasoning effort (low/medium/high) with a 200K context window, and replaced o1-mini as the default small reasoner.
Strengths
- Strong STEM (science, math, coding) reasoning
- Adjustable reasoning effort (low/medium/high)
- Low cost and latency for a reasoning model
- 200K context with tool use
- Replaced o1-mini as the default small reasoner
Caveats
- Text-only (no vision input)
- Superseded by o4-mini on many benchmarks
- Below full o3/GPT-5.x on the hardest tasks
- Vendor
- OpenAI
- Context Window
- 200,000 tokens
- Max Output
- 100,000 tokens
- License
- Proprietary
- Release Date
- 2025-01-31
- Modalities
- text
Capabilities
Vision
Audio
Video
Tool Use
Resources
Pricing
$1.10 per 1M input tokens, $4.40 per 1M output tokens - a low-cost reasoning option with adjustable effort levels.