OpenAI o3-mini: small o-series model optimized for science, math, and coding. Text-only input, high intelligence at o1-mini cost and latency targets. Deprecated.
Capabilities, design details, and architectural traits
o3-mini is a small o-series model positioned to deliver high intelligence at the same cost and latency targets as o1-mini. It was specifically launched as a model optimized for science, math, and coding tasks. Unlike o3 and o4-mini, it accepts text input only - image input is not supported.
| Trait | Detail |
|---|---|
| Image input | Not supported - text only; this separates it from o3 and o4-mini, which both accept image input |
| Explicit task focus | Optimized for science, math, and coding tasks per official launch documentation |
| Cost and latency target | Positioned to match o1-mini cost and latency, with higher intelligence than o1-mini |
| Fine-tuning | Not supported |
o3-mini introduced Structured Outputs, function calling, and Batch API support to the small reasoning model tier - features that its predecessor o1-mini lacked. It is now deprecated, with o4-mini serving as its successor in the small o-series tier.
Independent evaluations · Artificial Analysis
Evaluate specifications, pricing, and independent benchmark indices
| Model Details | |||
|---|---|---|---|
| General Info | |||
| Provider | OpenAI | Anthropic | Anthropic |
| Release Date | January 31, 2025 | July 24, 2026 | June 9, 2026 |
| Knowledge Cutoff | Oct 2023 | May 2026 | - |
| Context & Limits | |||
| Context Window | 200K | 1M Best Context Window | 1M Best Context Window |
| Pricing (per 1M tokens) | |||
| Input Pricing | $1.10 Best Input Pricing | $5 | $10 |
| Output Pricing | $4.40 Best Output Pricing | $25 | $50 |
| Modalities | |||
| Inputs | textfile | textimage | textimagefile |
| Outputs | text | text | text |
| Benchmarks (0-100) | |||
| Intelligence Index | 19.2 | 63.1 Best Intelligence Index | 62.1 |
| Coding Index | - | 78.0 Best Coding Index | 76.5 |
| Agentic Index | - | 59.2 Best Agentic Index | 56.6 |
Graduate-level reasoning and expert Q&A evaluation.
Extremely difficult logical reasoning and knowledge.
Scientific coding and mathematical modeling.
Independent evaluation data provided by Artificial Analysis. To view the latest benchmarks and full details, visit their official site.
