o1vso3 Mini
o3 Mini is cheaper than o1 at $1.1/M vs $15/M input tokens.
| Spec | o1 | o3 Mini |
|---|---|---|
| Input price | $15/M tokens | $1.1/M tokens |
| Output price | $60/M tokens | $4.4/M tokens |
| Context window | 128K tokens | 64K tokens |
| Parameters | Not disclosed | Not disclosed |
| Weights | Closed | Closed |
| Free API (OpenRouter) | No | No |
| Released | Dec 2024 | Dec 2024 |
| MMLU | 91.8% | 85.9% |
Our Verdict
o1
o3 MiniRunner-up
Not enough votes to call it. On the specs, o1 has the edge: bigger model tier, bigger context window.
o3 Mini costs 14x less per token.
Too close to call
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
o1
Input
$15.00
Output
$60.00
o3 Mini
Input
$1.10
14× cheaper
Output
$4.40
14× cheaper
o3 Mini is cheaper on both: 14× input, 14× output.
Where to run it
2 hosts
o3 Mini1 host
Per million tokens. Prices and uptime via OpenRouter, checked 13 Sep 2026.
Writing DNA
Style Comparison
Similarity
85%
o1
o3 Mini
65%Vocabulary65%
16wSentence Length18w
0.81Hedging0.84
3.6Bold2.8
2.1Lists1.5
0.00Emoji0.00
0.32Headings0.33
0.29Transitions0.29
Based on 18 + 17 text responses
Research
What we learned reading every model
FAQ
