# GPT-4o mini vs Mistral Small

> Mistral Small is the stronger model overall, scoring 33.4 to 25.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-4o-mini-vs-mistral-small
- Last updated: 2026-10-11
- Shared benchmarks: 34

## Summary

- They share 34 benchmarks with published results for both. GPT-4o mini scores higher in 0 categories and Mistral Small in 10 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Mistral Small leads 31.0 to 17.7.
- The biggest single-benchmark swing is DTBench: 54.4% for GPT-4o mini and 70.9% for Mistral Small.
- Both cost about the same: $0.15 input and $0.60 output per million tokens.
- Mistral Small accepts more context: 262K tokens versus 128K.
- Mistral Small has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-4o mini | Mistral Small |
|---|---|---|
| Provider | OpenAI | Mistral AI |
| Noometry Index | 25.5 | 33.4 |
| Rank | 343 | 243 |
| Context | 128K | 262K |
| Input $/M | $0.15 | $0.15 |
| Output $/M | $0.60 | $0.60 |
| Weights | Proprietary | Open |

## Coding

- GPT-4o mini: 22.0 (#335)
- Mistral Small: 34.0 (#247)

| Benchmark | GPT-4o mini | Mistral Small |
|---|---|---|
| BigCodeBench Instruct | 46.1% | 36.1% |
| LiveBench Coding | 43.1% | 36.2% |
| LMArena Coding | 1290 | 1362 |
| BigCodeBench Complete | 57.4% | 46.6% |
| Aider Polyglot | 3.6% | — |
| SciCode | — | 26.5% |
| WeirdML | 11.8% | — |
| ALE-Bench | — | 497.62 |
| HumanEval+ | 83.5% | — |
| MBPP+ | 72.2% | — |

## Agentic & Tool Use

- GPT-4o mini: 27.5 (#101)
- Mistral Small: 28.1 (#93)

| Benchmark | GPT-4o mini | Mistral Small |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 37.1% |
| BALROG | 17.4% | — |

## Reasoning

- GPT-4o mini: 8.7 (#347)
- Mistral Small: 19.8 (#250)

| Benchmark | GPT-4o mini | Mistral Small |
|---|---|---|
| Kagi LLM Benchmark | 28.8% | 37.8% |
| LiveBench Reasoning | 32.8% | 44.8% |
| LMArena Hard Prompts | 1267 | 1335 |
| DTBench | 54.4% | 70.9% |
| LiveBench Data Analysis | 50% | 53.7% |
| LMCA | 10.4% | 20.6% |
| LiveBench | 41.3% | 44% |
| ARC-AGI-2 | 0% | — |
| SimpleBench | 10.7% | — |
| CritPt | — | 0% |
| Chess Puzzles | 0% | — |
| Mystery Game Puzzles | 12% | — |
| Epoch Capabilities Index | 126.56 | — |
| PIQA | 88.7% | — |

## Math

- GPT-4o mini: 10.4 (#314)
- Mistral Small: 16.4 (#293)

| Benchmark | GPT-4o mini | Mistral Small |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 6.9% | 5.8% |
| LiveBench Math | 36.3% | 39.9% |
| LMArena Math | 1267 | 1341 |
| MATH Level 5 | 52.6% | 46.8% |
| FrontierMath (Tiers 1-3) | 0.7% | — |
| Omni-MATH | 28% | — |
| GSM8K | 91.3% | — |

## Knowledge

- GPT-4o mini: 17.7 (#284)
- Mistral Small: 31.0 (#222)

| Benchmark | GPT-4o mini | Mistral Small |
|---|---|---|
| GPQA Diamond | 37.7% | 47.5% |
| LMArena Expert | 1235 | 1291 |
| MMLU | 81.8% | 68.7% |
| SimpleQA Verified | 8.3% | — |
| MMLU-Pro | 60.3% | — |
| Confabulations | 37.2% | — |
| Vectara Hallucination Rate | — | 5.1% |
| GPQA (HELM) | 36.8% | — |
| BoolQ | 88.7% | — |

## Multimodal

- GPT-4o mini: 25.9 (#122)
- Mistral Small: 33.5 (#96)

| Benchmark | GPT-4o mini | Mistral Small |
|---|---|---|
| LMArena Vision | 1066 | 1142 |
| Video-MME | 64.8% | — |
| GeoBench | 64% | — |
| VPCT | 34% | — |

## Multilingual

- GPT-4o mini: 42.0 (#199)
- Mistral Small: 45.5 (#169)

| Benchmark | GPT-4o mini | Mistral Small |
|---|---|---|
| LMArena Non-English | 1266 | 1315 |
| LMArena Chinese | 1265 | 1340 |
| LMArena French | 1297 | 1337 |
| LMArena German | 1272 | 1340 |
| LMArena Japanese | 1216 | 1275 |
| LMArena Korean | 1195 | 1259 |
| LMArena Russian | 1275 | 1324 |
| LMArena Spanish | 1276 | 1346 |

## Instruction Following

- GPT-4o mini: 61.9 (#239)
- Mistral Small: 66.4 (#209)

| Benchmark | GPT-4o mini | Mistral Small |
|---|---|---|
| LiveBench Instruction Following | 56.8% | 63.7% |
| LMArena Instruction Following | 1258 | 1310 |
| IFEval | 78.2% | — |

## Long Context

- GPT-4o mini: 39.1 (#186)
- Mistral Small: 40.4 (#156)

| Benchmark | GPT-4o mini | Mistral Small |
|---|---|---|
| LMArena Longer Query | 1289 | 1327 |

## Writing & Preference

- GPT-4o mini: 39.5 (#248)
- Mistral Small: 52.5 (#171)

| Benchmark | GPT-4o mini | Mistral Small |
|---|---|---|
| LMArena Text | 1286 | 1338 |
| LMArena Creative Writing | 1268 | 1305 |
| LMArena Multi-Turn | 1285 | 1344 |
| LiveBench Language | 28.6% | 30.5% |
| Short-Story Creative Writing | 67.2% | — |
| EQ-Bench Creative Writing | 873 | — |
| WildBench | 79.1% | — |

## FAQ

### Is GPT-4o mini better than Mistral Small?

Mistral Small is the stronger model overall, scoring 33.4 to 25.5 on the Noometry Index.

### Which is cheaper, GPT-4o mini or Mistral Small?

Mistral Small is cheaper. It lists at $0.15 per million input tokens and $0.60 per million output tokens; GPT-4o mini lists at $0.15 and $0.60.

### Is GPT-4o mini or Mistral Small better for coding?

Mistral Small scores higher on coding benchmarks: 34.0 versus 22.0 in the Noometry coding category.

### Which has the bigger context window?

Mistral Small does, with 262K tokens against 128K.

### How many benchmarks do GPT-4o mini and Mistral Small share?

34 benchmarks have published results for both models. GPT-4o mini has 60 scored results on Noometry and Mistral Small has 39.