Mistral Large 3 vs o4
European flagship with strong multilingual chops. Meanwhile, o4: reasoning model. thinks before it speaks.
Side-by-side
Specs
| Dimension | Mistral Large 3 | o4 |
|---|---|---|
| Provider | Mistral | OpenAI |
| Released | 2025-09 | 2025-09 |
| Context window | ✓256K | 200K |
| Output max | 16K | ✓100K |
| Input /M | ✓$2.00 | $15.00 |
| Output /M | ✓$6.00 | $60.00 |
| Modalities | text, image | text, image |
| Open weights | no | no |
Scorecard
Dimension-by-dimension
Mistral Large 3
o4
reasoning
8.0
10.0
coding
8.0
9.0
writing
9.0
7.0
speed
7.0
3.0
value
8.0
5.0
Verdict
Which wins, by use case
| Use case | Winner | Why |
|---|---|---|
| coding | o4 | a coin flip on our weighted coding score |
| writing | Mistral Large 3 | a clear edge on our weighted writing score |
| chat | Mistral Large 3 | a decisive lead on our weighted chat score |
| agents | o4 | a clear edge on our weighted agents score |
| summarization | Mistral Large 3 | a decisive lead on our weighted summarization score |
| translation | Mistral Large 3 | a decisive lead on our weighted translation score |
| reasoning | o4 | a decisive lead on our weighted reasoning score |
| research | Mistral Large 3 | a coin flip on our weighted research score |
| vision and multimodal | o4 | a coin flip on our weighted vision score |
| Cheapest AI models for bulk workloads | Mistral Large 3 | a decisive lead on our weighted cheap-bulk score |
Bottom line
Our take
Pick Mistral Large 3 if you need: best-in-class multilingual, eu data residency.
Pick o4 if you need: state-of-the-art math & science, complex planning.
At a 500M-input / 150M-output monthly volume, Mistral Large 3 costs roughly $1900 vs o4 at $16500. Use our calculator to plug in your own numbers.
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