OpenAI ships o3 and o4-mini — reasoning models go mainstream
o3 achieves state-of-the-art on ARC-AGI, GPQA, and SWE-bench. o4-mini brings chain-of-thought reasoning to the API at lower cost. Available to all API tiers.
o4-mini
o4-mini by OpenAI — specifications, pricing and published benchmark scores, with community links.
| Organization | OpenAI |
|---|---|
| Released | 2025-04 |
| License | Proprietary |
| Open weights | No |
| Parameters | Undisclosed |
| Context window | 200,000 tokens |
| Modality | Text, image |
| Input price | $1.1 / 1M |
| Output price | $4.4 / 1M |
Benchmark scores
- aime: 93.4
- gpqa: 78
- mmlu: 88.6
- swe-bench-verified: 68.1