# GLM-5.3-Flash vs Mistral Small 3

> GLM-5.3-Flash is the stronger model overall, scoring 51.8 to 31.2 on the Noometry Index. Mistral Small 3 costs 4.1× less per token, which makes it the better buy when GLM-5.3-Flash's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/glm-5-3-flash-vs-mistral-small-3
- Last updated: 2026-10-10
- Shared benchmarks: 20

## Summary

- They share 20 benchmarks with published results for both. GLM-5.3-Flash scores higher in 8 categories and Mistral Small 3 in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where GLM-5.3-Flash leads 53.3 to 16.3.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 93.9% for GLM-5.3-Flash and 6.7% for Mistral Small 3.
- Mistral Small 3 is cheaper at $0.05 / $0.08 per million input/output tokens, against $0.15 / $0.50 for GLM-5.3-Flash.
- GLM-5.3-Flash accepts more context: 1M tokens versus 33K.

## Snapshot

| | GLM-5.3-Flash | Mistral Small 3 |
|---|---|---|
| Provider | Z.ai (Zhipu) | Mistral AI |
| Noometry Index | 51.8 | 31.2 |
| Rank | 41 | 278 |
| Context | 1M | 33K |
| Input $/M | $0.15 | $0.05 |
| Output $/M | $0.50 | $0.08 |
| Weights | Open | Open |

## Coding

- GLM-5.3-Flash: 53.1 (#31)
- Mistral Small 3: 36.5 (#207)

| Benchmark | GLM-5.3-Flash | Mistral Small 3 |
|---|---|---|
| LMArena Coding | 1508 | 1246 |
| DeepSWE | 63.4% | — |
| FrontierCode | 31.8% | — |
| CursorBench | 36.8% | — |
| LMArena WebDev | 1609 | — |
| FrontierSWE | 18.1% | — |
| SciCode | 51.6% | — |
| BigCodeBench Instruct | — | 45.3% |
| BigCodeBench Complete | — | 50.4% |
| ALE-Bench | 303.55 | — |

## Agentic & Tool Use

- GLM-5.3-Flash: 34.2 (#47)
- Mistral Small 3: —

| Benchmark | GLM-5.3-Flash | Mistral Small 3 |
|---|---|---|
| APEX-Agents | 52.8% | — |
| GDP.pdf | 14% | — |

## Reasoning

- GLM-5.3-Flash: 48.0 (#42)
- Mistral Small 3: 18.9 (#273)

| Benchmark | GLM-5.3-Flash | Mistral Small 3 |
|---|---|---|
| Chess Puzzles | 14% | 0% |
| LMArena Hard Prompts | 1491 | 1233 |
| Epoch Capabilities Index | 151.88 | 127.07 |
| ARC-AGI-2 | 65.8% | — |
| ARC-AGI-1 | 91% | — |
| CritPt | 15.4% | — |
| Mystery Game Puzzles | 8% | — |
| Surface Evolver Bench | 52.5% | — |
| Bench to the Future 3 | 0.15 | — |

## Math

- GLM-5.3-Flash: 53.3 (#47)
- Mistral Small 3: 16.3 (#295)

| Benchmark | GLM-5.3-Flash | Mistral Small 3 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 93.9% | 6.7% |
| LMArena Math | 1500 | 1240 |
| FrontierMath (Tiers 1-3) | 55.8% | — |
| FrontierMath Tier 4 | 17.1% | — |
| ProofBench | 21% | — |

## Knowledge

- GLM-5.3-Flash: 58.4 (#36)
- Mistral Small 3: 25.1 (#263)

| Benchmark | GLM-5.3-Flash | Mistral Small 3 |
|---|---|---|
| GPQA Diamond | 90.2% | 47.3% |
| LMArena Expert | 1513 | 1202 |
| Confabulations | — | 25.2% |

## Multimodal

- GLM-5.3-Flash: 42.8 (#27)
- Mistral Small 3: —

| Benchmark | GLM-5.3-Flash | Mistral Small 3 |
|---|---|---|
| LMArena Vision | 1296 | — |

## Multilingual

- GLM-5.3-Flash: 56.0 (#25)
- Mistral Small 3: 37.3 (#236)

| Benchmark | GLM-5.3-Flash | Mistral Small 3 |
|---|---|---|
| LMArena Non-English | 1462 | 1198 |
| LMArena Chinese | 1527 | 1204 |
| LMArena French | 1496 | 1203 |
| LMArena German | 1470 | 1211 |
| LMArena Japanese | 1429 | 1111 |
| LMArena Korean | 1446 | 1188 |
| LMArena Russian | 1469 | 1216 |
| LMArena Spanish | 1471 | — |

## Instruction Following

- GLM-5.3-Flash: 77.5 (#20)
- Mistral Small 3: 63.7 (#229)

| Benchmark | GLM-5.3-Flash | Mistral Small 3 |
|---|---|---|
| LMArena Instruction Following | 1478 | 1214 |

## Long Context

- GLM-5.3-Flash: 45.4 (#39)
- Mistral Small 3: 37.8 (#211)

| Benchmark | GLM-5.3-Flash | Mistral Small 3 |
|---|---|---|
| LMArena Longer Query | 1482 | 1246 |

## Writing & Preference

- GLM-5.3-Flash: 65.3 (#50)
- Mistral Small 3: 32.2 (#280)

| Benchmark | GLM-5.3-Flash | Mistral Small 3 |
|---|---|---|
| LMArena Text | 1471 | 1234 |
| LMArena Creative Writing | 1442 | 1195 |
| LMArena Multi-Turn | 1467 | 1217 |
| EQ-Bench Creative Writing | — | 707 |

## FAQ

### Is GLM-5.3-Flash better than Mistral Small 3?

GLM-5.3-Flash is the stronger model overall, scoring 51.8 to 31.2 on the Noometry Index. Mistral Small 3 costs 4.1× less per token, which makes it the better buy when GLM-5.3-Flash's lead doesn't matter for your workload.

### Which is cheaper, GLM-5.3-Flash or Mistral Small 3?

Mistral Small 3 is cheaper. It lists at $0.05 per million input tokens and $0.08 per million output tokens; GLM-5.3-Flash lists at $0.15 and $0.50.

### Is GLM-5.3-Flash or Mistral Small 3 better for coding?

GLM-5.3-Flash scores higher on coding benchmarks: 53.1 versus 36.5 in the Noometry coding category.

### Which has the bigger context window?

GLM-5.3-Flash does, with 1M tokens against 33K.

### How many benchmarks do GLM-5.3-Flash and Mistral Small 3 share?

20 benchmarks have published results for both models. GLM-5.3-Flash has 40 scored results on Noometry and Mistral Small 3 has 24.