# Mistral Small 3 vs Solar Pro4

> Solar Pro4 is the stronger model overall, scoring 42.1 to 31.2 on the Noometry Index. Mistral Small 3 costs 9.1× less per token, which makes it the better buy when Solar Pro4's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/mistral-small-3-vs-solar-pro4
- Last updated: 2026-10-11
- Shared benchmarks: 16

## Summary

- They share 16 benchmarks with published results for both. Mistral Small 3 scores higher in 0 categories and Solar Pro4 in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Solar Pro4 leads 56.5 to 32.2.
- Mistral Small 3 is cheaper at $0.05 / $0.08 per million input/output tokens, against $0.30 / $1.20 for Solar Pro4.
- Solar Pro4 accepts more context: 524K tokens versus 33K.
- Mistral Small 3 has downloadable open weights; the other is API-only.

## Snapshot

| | Mistral Small 3 | Solar Pro4 |
|---|---|---|
| Provider | Mistral AI | Upstage |
| Noometry Index | 31.2 | 42.1 |
| Rank | 278 | 121 |
| Context | 33K | 524K |
| Input $/M | $0.05 | $0.30 |
| Output $/M | $0.08 | $1.20 |
| Weights | Open | Proprietary |

## Coding

- Mistral Small 3: 36.5 (#207)
- Solar Pro4: 40.1 (#149)

| Benchmark | Mistral Small 3 | Solar Pro4 |
|---|---|---|
| LMArena Coding | 1246 | 1437 |
| LMArena WebDev | — | 1371 |
| BigCodeBench Instruct | 45.3% | — |
| BigCodeBench Complete | 50.4% | — |

## Reasoning

- Mistral Small 3: 18.9 (#273)
- Solar Pro4: 28.5 (#104)

| Benchmark | Mistral Small 3 | Solar Pro4 |
|---|---|---|
| LMArena Hard Prompts | 1233 | 1399 |
| Chess Puzzles | 0% | — |
| Epoch Capabilities Index | 127.07 | — |

## Math

- Mistral Small 3: 16.3 (#295)
- Solar Pro4: 38.8 (#128)

| Benchmark | Mistral Small 3 | Solar Pro4 |
|---|---|---|
| LMArena Math | 1240 | 1416 |
| OTIS Mock AIME 2024-2025 | 6.7% | — |

## Knowledge

- Mistral Small 3: 25.1 (#263)
- Solar Pro4: 39.8 (#129)

| Benchmark | Mistral Small 3 | Solar Pro4 |
|---|---|---|
| LMArena Expert | 1202 | 1427 |
| GPQA Diamond | 47.3% | — |
| Confabulations | 25.2% | — |

## Multilingual

- Mistral Small 3: 37.3 (#236)
- Solar Pro4: 48.7 (#139)

| Benchmark | Mistral Small 3 | Solar Pro4 |
|---|---|---|
| LMArena Non-English | 1198 | 1361 |
| LMArena Chinese | 1204 | 1415 |
| LMArena French | 1203 | 1397 |
| LMArena German | 1211 | 1364 |
| LMArena Japanese | 1111 | 1309 |
| LMArena Korean | 1188 | 1382 |
| LMArena Russian | 1216 | 1360 |
| LMArena Spanish | — | 1401 |

## Instruction Following

- Mistral Small 3: 63.7 (#229)
- Solar Pro4: 72.7 (#132)

| Benchmark | Mistral Small 3 | Solar Pro4 |
|---|---|---|
| LMArena Instruction Following | 1214 | 1377 |

## Long Context

- Mistral Small 3: 37.8 (#211)
- Solar Pro4: 42.1 (#130)

| Benchmark | Mistral Small 3 | Solar Pro4 |
|---|---|---|
| LMArena Longer Query | 1246 | 1381 |

## Writing & Preference

- Mistral Small 3: 32.2 (#280)
- Solar Pro4: 56.5 (#138)

| Benchmark | Mistral Small 3 | Solar Pro4 |
|---|---|---|
| LMArena Text | 1234 | 1386 |
| LMArena Creative Writing | 1195 | 1316 |
| LMArena Multi-Turn | 1217 | 1385 |
| EQ-Bench Creative Writing | 707 | — |

## FAQ

### Is Mistral Small 3 better than Solar Pro4?

Solar Pro4 is the stronger model overall, scoring 42.1 to 31.2 on the Noometry Index. Mistral Small 3 costs 9.1× less per token, which makes it the better buy when Solar Pro4's lead doesn't matter for your workload.

### Which is cheaper, Mistral Small 3 or Solar Pro4?

Mistral Small 3 is cheaper. It lists at $0.05 per million input tokens and $0.08 per million output tokens; Solar Pro4 lists at $0.30 and $1.20.

### Is Mistral Small 3 or Solar Pro4 better for coding?

Solar Pro4 scores higher on coding benchmarks: 40.1 versus 36.5 in the Noometry coding category.

### Which has the bigger context window?

Solar Pro4 does, with 524K tokens against 33K.

### How many benchmarks do Mistral Small 3 and Solar Pro4 share?

16 benchmarks have published results for both models. Mistral Small 3 has 24 scored results on Noometry and Solar Pro4 has 18.