Mistral Small 3 vs o4 Mini High
Mistral Small 3 costs 55.0x less per output token than o4 Mini High ($0.08 vs $4.40 per million). Updated October 21, 2026; no benchmark has tested both models yet.
- Coding
- No data
- Overall
- 6.7
- Output $/M
- $0.08
- Coding
- No data
- Overall
- No data
- Output $/M
- $4.40
Mistral Small 3 or o4 Mini High: which to pick
Neither model has a coding score yet, so the two cannot be ranked on coding.
Pick Mistral Small 3 for output tokens 55.0x cheaper ($0.08 vs $4.40 per million).
No benchmark has tested both yet. Mistral Small 3 has results on LiveCodeBench (Artificial Analysis run), LMArena Text: coding and LMArena Text: software and IT; o4 Mini High on ALE-Bench and GDPval. Compare them on price and context instead.
Which one for your work
Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.
Coding
Vibe Coding Index, six public coding benchmarks
No call
Neither has a coding score yet.
One side not measured
Intelligence
AA Intelligence Index
No call
Only Mistral Small 3 has a AA Intelligence Index result, 6.7.
Directional only
Long documents
Listed context window
o4 Mini High
o4 Mini High takes 200K tokens against 33K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Mistral Small 3
Mistral Small 3 $0.0001, o4 Mini High $0.0033 per turn.
List prices
At a glance
- Coding index
- Mistral Small 3 not benchmarked, o4 Mini High not benchmarked.
- Widest category
- None yet: no category has been tested on both models.
- Widest single gap
- None yet: no benchmark has tested both models.
- Output price
- Mistral Small 3 $0.08 against o4 Mini High $4.40 per million output tokens, 55.0x apart.
- Context window
- Mistral Small 3 takes 33K tokens, o4 Mini High 200K.
Benchmark by benchmark
Every board either model has a result on, a category to a fold; bars are each result on a 0 to 100 scale. Only one model is measured on each, so no row names a leader.
CodingDirectional onlySix of these boards feed the Vibe Coding Index4 boards measured
| Benchmark | Mistral Small 3 | o4 Mini High | Leader |
|---|---|---|---|
| LiveCodeBench (Artificial Analysis run) | 25.2% | Not measured | Only Mistral Small 3 measured |
| ALE-Bench | Not measured | 826.2 | Only o4 Mini High measured |
| LMArena Text: coding | 1246 | Not measured | Only Mistral Small 3 measured |
| LMArena Text: software and IT | 1248 | Not measured | Only Mistral Small 3 measured |
| Neither model has a result on the other 34 boards here | |||
IntelligenceDirectional onlyPublic boards, shown as published, kept out of the index1 board measured
| Benchmark | Mistral Small 3 | o4 Mini High | Leader |
|---|---|---|---|
| AA Intelligence Index | 6.7 | Not measured | Only Mistral Small 3 measured |
| Neither model has a result on the other 1 board here | |||
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index2 boards measured
| Benchmark | Mistral Small 3 | o4 Mini High | Leader |
|---|---|---|---|
| τ²-Bench Telecom | 19.6% | Not measured | Only Mistral Small 3 measured |
| GDPval | Not measured | 25.3% | Only o4 Mini High measured |
| Neither model has a result on the other 37 boards here | |||
ReasoningDirectional onlyPublic boards, shown as published, kept out of the index5 boards measured
| Benchmark | Mistral Small 3 | o4 Mini High | Leader |
|---|---|---|---|
| GPQA Diamond (Artificial Analysis run) | 46.2% | Not measured | Only Mistral Small 3 measured |
| Humanity's Last Exam (Artificial Analysis run) | 3.8% | Not measured | Only Mistral Small 3 measured |
| LMArena Text: hard prompts | 1233 | Not measured | Only Mistral Small 3 measured |
| LMArena Text: expert | 1202 | Not measured | Only Mistral Small 3 measured |
| LMArena Text: hard prompts in English | 1243 | Not measured | Only Mistral Small 3 measured |
| Neither model has a result on the other 16 boards here | |||
MathDirectional onlyPublic boards, shown as published, kept out of the index4 boards measured
| Benchmark | Mistral Small 3 | o4 Mini High | Leader |
|---|---|---|---|
| AA Math Index | 4.3 | Not measured | Only Mistral Small 3 measured |
| AIME 2025 (Artificial Analysis run) | 4.3% | Not measured | Only Mistral Small 3 measured |
| LMArena Text: math | 1240 | Not measured | Only Mistral Small 3 measured |
| LMArena Text: mathematical work | 1243 | Not measured | Only Mistral Small 3 measured |
| Neither model has a result on the other 9 boards here | |||
KnowledgeDirectional onlyPublic boards, shown as published, kept out of the index5 boards measured
| Benchmark | Mistral Small 3 | o4 Mini High | Leader |
|---|---|---|---|
| MMLU Pro (Artificial Analysis run) | 65.2% | Not measured | Only Mistral Small 3 measured |
| LMArena Text: science | 1235 | Not measured | Only Mistral Small 3 measured |
| LMArena Text: medicine and healthcare | 1215 | Not measured | Only Mistral Small 3 measured |
| LMArena Text: legal and government | 1219 | Not measured | Only Mistral Small 3 measured |
| LMArena Text: business and finance | 1205 | Not measured | Only Mistral Small 3 measured |
| Neither model has a result on the other 12 boards here | |||
GeneralDirectional onlyPublic boards, shown as published, kept out of the index17 boards measured
| Benchmark | Mistral Small 3 | o4 Mini High | Leader |
|---|---|---|---|
| IFBench | 26.4% | Not measured | Only Mistral Small 3 measured |
| Long context reasoning (AA-LCR) | 0.0% | Not measured | Only Mistral Small 3 measured |
| LMArena Text | 1234 | Not measured | Only Mistral Small 3 measured |
| LMArena Text: instruction following | 1214 | Not measured | Only Mistral Small 3 measured |
| LMArena Text: creative writing | 1194 | Not measured | Only Mistral Small 3 measured |
| LMArena Text: English | 1256 | Not measured | Only Mistral Small 3 measured |
| LMArena Text: non-English | 1198 | Not measured | Only Mistral Small 3 measured |
| LMArena Text: Chinese | 1204 | Not measured | Only Mistral Small 3 measured |
| LMArena Text: German | 1211 | Not measured | Only Mistral Small 3 measured |
| LMArena Text: Japanese | 1111 | Not measured | Only Mistral Small 3 measured |
| LMArena Text: Korean | 1188 | Not measured | Only Mistral Small 3 measured |
| LMArena Text: French | 1204 | Not measured | Only Mistral Small 3 measured |
| LMArena Text: Russian | 1216 | Not measured | Only Mistral Small 3 measured |
| LMArena Text: multi-turn | 1217 | Not measured | Only Mistral Small 3 measured |
| LMArena Text: longer queries | 1246 | Not measured | Only Mistral Small 3 measured |
| LMArena Text: writing and language | 1214 | Not measured | Only Mistral Small 3 measured |
| LMArena Text: entertainment and media | 1184 | Not measured | Only Mistral Small 3 measured |
| Neither model has a result on the other 29 boards here | |||
What each workload costs
Three fixed token mixes at each model's listed price, so per-token rates become a bill.
Chat turn
1K input + 500 output tokens
Mistral Small 3 costs less
Repository review
50K input + 3K output tokens
Mistral Small 3 costs less
Agent loop
200K input + 10K output tokens
Mistral Small 3 costs less
Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.
Specification differences
The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.
| Specification | Mistral Small 3 | OpenAI o4 Mini High |
|---|---|---|
| Maker | Mistral AI | OpenAI |
| Weights | Open weights | No public weights listed |
| Released | January 30, 2025 | April 16, 2025 |
| Context window | 33K | 200K |
| Input $/Mtok | $0.05 | $1.10 |
| Output $/Mtok | $0.08 | $4.40 |
| Coding index | Not benchmarked | Not benchmarked |
| Independent measurements behind it | 0 | 0 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Mistral Small 3 better than o4 Mini High for coding?
Neither model has a coding score yet, so the two cannot be ranked on coding. Pick Mistral Small 3 for output tokens 55.0x cheaper ($0.08 vs $4.40 per million).
Which is cheaper, Mistral Small 3 or o4 Mini High?
Mistral Small 3 costs $0.05 per million input tokens and $0.08 per million output tokens; o4 Mini High costs $1.10 and $4.40. Cost per solved task is known for neither of them.
Which has the bigger context window, Mistral Small 3 or o4 Mini High?
o4 Mini High, with 200K tokens against 33K.
Has any benchmark tested both Mistral Small 3 and o4 Mini High?
No benchmark has tested both yet. Mistral Small 3 has results on LiveCodeBench (Artificial Analysis run), LMArena Text: coding and LMArena Text: software and IT; o4 Mini High on ALE-Bench and GDPval. Compare them on price and context instead. Data as of October 21, 2026.