# GLM-4.5V vs Step 3.5 Flash

> Step 3.5 Flash is the stronger model overall, scoring 42.3 to 39.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/glm-4-5v-vs-step-3-5-flash
- Last updated: 2026-10-12
- Shared benchmarks: 13

## Summary

- They share 13 benchmarks with published results for both. GLM-4.5V scores higher in 1 category and Step 3.5 Flash in 7 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Step 3.5 Flash leads 58.8 to 52.5.
- Step 3.5 Flash is cheaper at $0.10 / $0.30 per million input/output tokens, against $0.60 / $1.80 for GLM-4.5V.
- Step 3.5 Flash accepts more context: 256K tokens versus 64K.

## Snapshot

| | GLM-4.5V | Step 3.5 Flash |
|---|---|---|
| Provider | Z.ai (Zhipu) | StepFun |
| Noometry Index | 39.8 | 42.3 |
| Rank | 158 | 116 |
| Context | 64K | 256K |
| Input $/M | $0.60 | $0.10 |
| Output $/M | $1.80 | $0.30 |
| Weights | Open | Open |

## Coding

- GLM-4.5V: 39.5 (#155)
- Step 3.5 Flash: 42.4 (#105)

| Benchmark | GLM-4.5V | Step 3.5 Flash |
|---|---|---|
| LMArena Coding | 1347 | 1436 |

## Reasoning

- GLM-4.5V: 27.4 (#119)
- Step 3.5 Flash: 22.2 (#202)

| Benchmark | GLM-4.5V | Step 3.5 Flash |
|---|---|---|
| LMArena Hard Prompts | 1334 | 1411 |
| Kagi LLM Benchmark | 59.8% | — |
| NYT Connections (extended) | — | 28.4% |

## Math

- GLM-4.5V: 37.4 (#159)
- Step 3.5 Flash: 42.6 (#84)

| Benchmark | GLM-4.5V | Step 3.5 Flash |
|---|---|---|
| LMArena Math | 1354 | 1408 |
| MathArena Final-Answer Competitions | — | 66.8% |

## Knowledge

- GLM-4.5V: 37.5 (#156)
- Step 3.5 Flash: 39.6 (#132)

| Benchmark | GLM-4.5V | Step 3.5 Flash |
|---|---|---|
| LMArena Expert | 1353 | 1421 |

## Multimodal

- GLM-4.5V: 34.3 (#92)
- Step 3.5 Flash: —

| Benchmark | GLM-4.5V | Step 3.5 Flash |
|---|---|---|
| LMArena Vision | 1154 | — |

## Multilingual

- GLM-4.5V: 44.6 (#177)
- Step 3.5 Flash: 50.5 (#119)

| Benchmark | GLM-4.5V | Step 3.5 Flash |
|---|---|---|
| LMArena Non-English | 1303 | 1385 |
| LMArena Chinese | 1337 | 1447 |
| LMArena Russian | 1298 | 1385 |
| LMArena Spanish | 1336 | 1419 |
| LMArena French | — | 1421 |
| LMArena German | — | 1405 |
| LMArena Japanese | — | 1354 |
| LMArena Korean | — | 1352 |

## Instruction Following

- GLM-4.5V: 69.2 (#175)
- Step 3.5 Flash: 73.1 (#124)

| Benchmark | GLM-4.5V | Step 3.5 Flash |
|---|---|---|
| LMArena Instruction Following | 1311 | 1385 |

## Long Context

- GLM-4.5V: 39.6 (#171)
- Step 3.5 Flash: 42.8 (#117)

| Benchmark | GLM-4.5V | Step 3.5 Flash |
|---|---|---|
| LMArena Longer Query | 1304 | 1402 |

## Writing & Preference

- GLM-4.5V: 52.5 (#170)
- Step 3.5 Flash: 58.8 (#113)

| Benchmark | GLM-4.5V | Step 3.5 Flash |
|---|---|---|
| LMArena Text | 1333 | 1403 |
| LMArena Creative Writing | 1295 | 1357 |
| LMArena Multi-Turn | 1332 | 1405 |

## FAQ

### Is GLM-4.5V better than Step 3.5 Flash?

Step 3.5 Flash is the stronger model overall, scoring 42.3 to 39.8 on the Noometry Index.

### Which is cheaper, GLM-4.5V or Step 3.5 Flash?

Step 3.5 Flash is cheaper. It lists at $0.10 per million input tokens and $0.30 per million output tokens; GLM-4.5V lists at $0.60 and $1.80.

### Is GLM-4.5V or Step 3.5 Flash better for coding?

Step 3.5 Flash scores higher on coding benchmarks: 42.4 versus 39.5 in the Noometry coding category.

### Which has the bigger context window?

Step 3.5 Flash does, with 256K tokens against 64K.

### How many benchmarks do GLM-4.5V and Step 3.5 Flash share?

13 benchmarks have published results for both models. GLM-4.5V has 15 scored results on Noometry and Step 3.5 Flash has 19.