Mistral Devstral Small 1.1vsOpenAI o3
Mistral Devstral Small 1.1 is cheaper than OpenAI o3 at $0.1/M vs $10/M input tokens.
| Spec | Mistral Devstral Small 1.1 | OpenAI o3 |
|---|---|---|
| Input price | $0.1/M tokens | $10/M tokens |
| Output price | $0.3/M tokens | $40/M tokens |
| Released | Jul 2025 | Apr 2025 |
| SWE-bench Verified | 46.8% | 69.1% |
Our Verdict
OpenAI o3
Mistral Devstral Small 1.1Runner-up
Not enough votes to call it. On the specs, OpenAI o3 has the edge: bigger model tier, major provider backing.
Mistral Devstral Small 1.1 costs 133x less per token.
Too close to call
API pricing
Cost per 1M tokens
Mistral Devstral Small 1.1
Input
$0.10
100× cheaper
Output
$0.30
133× cheaper
OpenAI o3
Input
$10.00
Output
$40.00
Mistral Devstral Small 1.1 is cheaper on both — 100× input, 133× output
Writing DNA
Style Comparison
Similarity
33%
Mistral Devstral Small 1.1 uses 6.4x more bold
Mistral Devstral Small 1.1
OpenAI o3
51%Vocabulary70%
18wSentence Length14w
0.55Hedging0.27
3.8Bold0.6
5.1Lists2.8
0.00Emoji0.00
0.07Headings0.32
0.28Transitions0.10
Based on 27 + 19 text responses
Research
What we learned reading every model
FAQ
Common questions
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