o1vsOpenAI o3
OpenAI o3 is cheaper than o1 at $10/M vs $15/M input tokens.
| Spec | o1 | OpenAI o3 |
|---|---|---|
| Input price | $15/M tokens | $10/M tokens |
| Output price | $60/M tokens | $40/M tokens |
| Context window | 128K tokens | — |
| Released | Dec 2024 | Apr 2025 |
| SWE-bench Verified | 48.9% | 69.1% |
Our Verdict
OpenAI o3
o1Runner-up
Not enough votes to call it. On the specs, OpenAI o3 has the edge: bigger model tier, newer.
Too close to call
API pricing
Cost per 1M tokens
o1
Input
$15.00
Output
$60.00
OpenAI o3
Input
$10.00
1.5× cheaper
Output
$40.00
1.5× cheaper
OpenAI o3 is cheaper on both — 1.5× input, 1.5× output
Writing DNA
Style Comparison
Similarity
56%
o1 uses 7.2x more bold
o1
OpenAI o3
64%Vocabulary68%
16wSentence Length14w
0.76Hedging0.26
5.0Bold0.7
2.6Lists3.0
0.00Emoji0.00
0.44Headings0.38
0.40Transitions0.12
Based on 13 + 16 text responses
Research
What we learned reading every model
FAQ
