# GLM-4.5 vs Solar Pro4

> GLM-4.5 and Solar Pro4 score almost the same on the Noometry Index (42.0 vs 42.1), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/glm-4-5-vs-solar-pro4
- Last updated: 2026-10-10
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. GLM-4.5 scores higher in 6 categories and Solar Pro4 in 2 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in multilingual, where GLM-4.5 leads 52.8 to 48.7.
- Solar Pro4 is cheaper at $0.30 / $1.20 per million input/output tokens, against $0.60 / $2.20 for GLM-4.5.
- Solar Pro4 accepts more context: 524K tokens versus 131K.
- GLM-4.5 has downloadable open weights; the other is API-only.

## Snapshot

| | GLM-4.5 | Solar Pro4 |
|---|---|---|
| Provider | Z.ai (Zhipu) | Upstage |
| Noometry Index | 42.0 | 42.1 |
| Rank | 122 | 121 |
| Context | 131K | 524K |
| Input $/M | $0.60 | $0.30 |
| Output $/M | $2.20 | $1.20 |
| Weights | Open | Proprietary |

## Coding

- GLM-4.5: 41.4 (#125)
- Solar Pro4: 40.1 (#149)

| Benchmark | GLM-4.5 | Solar Pro4 |
|---|---|---|
| LMArena Coding | 1434 | 1437 |
| SWE-bench Verified (bash only) | 54.2% | — |
| LMArena WebDev | — | 1371 |
| WeirdML | 40.6% | — |
| ALE-Bench | 344.82 | — |
| AlgoTune | 1.52 | — |

## Reasoning

- GLM-4.5: 28.6 (#100)
- Solar Pro4: 28.5 (#104)

| Benchmark | GLM-4.5 | Solar Pro4 |
|---|---|---|
| LMArena Hard Prompts | 1429 | 1399 |
| Kagi LLM Benchmark | 57.9% | — |

## Math

- GLM-4.5: 39.0 (#116)
- Solar Pro4: 38.8 (#128)

| Benchmark | GLM-4.5 | Solar Pro4 |
|---|---|---|
| LMArena Math | 1427 | 1416 |

## Knowledge

- GLM-4.5: 35.9 (#179)
- Solar Pro4: 39.8 (#129)

| Benchmark | GLM-4.5 | Solar Pro4 |
|---|---|---|
| LMArena Expert | 1433 | 1427 |
| Humanity's Last Exam | 8.3% | — |
| Confabulations | 11.3% | — |

## Multilingual

- GLM-4.5: 52.8 (#77)
- Solar Pro4: 48.7 (#139)

| Benchmark | GLM-4.5 | Solar Pro4 |
|---|---|---|
| LMArena Non-English | 1417 | 1361 |
| LMArena Chinese | 1465 | 1415 |
| LMArena French | 1418 | 1397 |
| LMArena German | 1407 | 1364 |
| LMArena Japanese | 1415 | 1309 |
| LMArena Korean | 1380 | 1382 |
| LMArena Russian | 1414 | 1360 |
| LMArena Spanish | 1454 | 1401 |

## Instruction Following

- GLM-4.5: 74.1 (#104)
- Solar Pro4: 72.7 (#132)

| Benchmark | GLM-4.5 | Solar Pro4 |
|---|---|---|
| LMArena Instruction Following | 1404 | 1377 |

## Long Context

- GLM-4.5: 38.2 (#201)
- Solar Pro4: 42.1 (#130)

| Benchmark | GLM-4.5 | Solar Pro4 |
|---|---|---|
| LMArena Longer Query | 1412 | 1381 |
| Fiction.LiveBench | 58.3% | — |

## Writing & Preference

- GLM-4.5: 57.5 (#127)
- Solar Pro4: 56.5 (#138)

| Benchmark | GLM-4.5 | Solar Pro4 |
|---|---|---|
| LMArena Text | 1430 | 1386 |
| LMArena Creative Writing | 1395 | 1316 |
| LMArena Multi-Turn | 1415 | 1385 |
| Short-Story Creative Writing | 73.4% | — |
| EQ-Bench Creative Writing | 1343 | — |

## FAQ

### Is GLM-4.5 better than Solar Pro4?

GLM-4.5 and Solar Pro4 score almost the same on the Noometry Index (42.0 vs 42.1), so choose on price, context window or the category you care about most.

### Which is cheaper, GLM-4.5 or Solar Pro4?

Solar Pro4 is cheaper. It lists at $0.30 per million input tokens and $1.20 per million output tokens; GLM-4.5 lists at $0.60 and $2.20.

### Is GLM-4.5 or Solar Pro4 better for coding?

GLM-4.5 scores higher on coding benchmarks: 41.4 versus 40.1 in the Noometry coding category.

### Which has the bigger context window?

Solar Pro4 does, with 524K tokens against 131K.

### How many benchmarks do GLM-4.5 and Solar Pro4 share?

17 benchmarks have published results for both models. GLM-4.5 has 27 scored results on Noometry and Solar Pro4 has 18.