# Nemotron 3.5 Lightning vs Solar Pro4

> Solar Pro4 is the stronger model overall, scoring 42.1 to 40.0 on the Noometry Index. Nemotron 3.5 Lightning costs 6.0× 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/nemotron-3-5-lightning-vs-solar-pro4
- Last updated: 2026-10-12
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. Nemotron 3.5 Lightning scores higher in 1 category and Solar Pro4 in 7 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Solar Pro4 leads 56.5 to 48.5.
- Nemotron 3.5 Lightning is cheaper at $0.05 / $0.20 per million input/output tokens, against $0.30 / $1.20 for Solar Pro4.
- Solar Pro4 accepts more context: 524K tokens versus 262K.
- Nemotron 3.5 Lightning has downloadable open weights; the other is API-only.

## Snapshot

| | Nemotron 3.5 Lightning | Solar Pro4 |
|---|---|---|
| Provider | NVIDIA | Upstage |
| Noometry Index | 40.0 | 42.1 |
| Rank | 155 | 121 |
| Context | 262K | 524K |
| Input $/M | $0.05 | $0.30 |
| Output $/M | $0.20 | $1.20 |
| Weights | Open | Proprietary |

## Coding

- Nemotron 3.5 Lightning: 40.4 (#141)
- Solar Pro4: 40.1 (#149)

| Benchmark | Nemotron 3.5 Lightning | Solar Pro4 |
|---|---|---|
| LMArena Coding | 1375 | 1437 |
| LMArena WebDev | — | 1371 |

## Reasoning

- Nemotron 3.5 Lightning: 26.8 (#127)
- Solar Pro4: 28.5 (#104)

| Benchmark | Nemotron 3.5 Lightning | Solar Pro4 |
|---|---|---|
| LMArena Hard Prompts | 1337 | 1399 |

## Math

- Nemotron 3.5 Lightning: 37.5 (#155)
- Solar Pro4: 38.8 (#128)

| Benchmark | Nemotron 3.5 Lightning | Solar Pro4 |
|---|---|---|
| LMArena Math | 1359 | 1416 |

## Knowledge

- Nemotron 3.5 Lightning: 37.5 (#154)
- Solar Pro4: 39.8 (#129)

| Benchmark | Nemotron 3.5 Lightning | Solar Pro4 |
|---|---|---|
| LMArena Expert | 1356 | 1427 |

## Multilingual

- Nemotron 3.5 Lightning: 44.0 (#180)
- Solar Pro4: 48.7 (#139)

| Benchmark | Nemotron 3.5 Lightning | Solar Pro4 |
|---|---|---|
| LMArena Non-English | 1295 | 1361 |
| LMArena Chinese | 1359 | 1415 |
| LMArena French | 1366 | 1397 |
| LMArena German | 1282 | 1364 |
| LMArena Japanese | 1206 | 1309 |
| LMArena Korean | 1238 | 1382 |
| LMArena Russian | 1253 | 1360 |
| LMArena Spanish | 1345 | 1401 |

## Instruction Following

- Nemotron 3.5 Lightning: 69.6 (#170)
- Solar Pro4: 72.7 (#132)

| Benchmark | Nemotron 3.5 Lightning | Solar Pro4 |
|---|---|---|
| LMArena Instruction Following | 1318 | 1377 |

## Long Context

- Nemotron 3.5 Lightning: 39.9 (#165)
- Solar Pro4: 42.1 (#130)

| Benchmark | Nemotron 3.5 Lightning | Solar Pro4 |
|---|---|---|
| LMArena Longer Query | 1314 | 1381 |

## Writing & Preference

- Nemotron 3.5 Lightning: 48.5 (#201)
- Solar Pro4: 56.5 (#138)

| Benchmark | Nemotron 3.5 Lightning | Solar Pro4 |
|---|---|---|
| LMArena Text | 1327 | 1386 |
| LMArena Creative Writing | 1254 | 1316 |
| LMArena Multi-Turn | 1328 | 1385 |
| EQ-Bench Creative Writing | 1280 | — |

## FAQ

### Is Nemotron 3.5 Lightning better than Solar Pro4?

Solar Pro4 is the stronger model overall, scoring 42.1 to 40.0 on the Noometry Index. Nemotron 3.5 Lightning costs 6.0× less per token, which makes it the better buy when Solar Pro4's lead doesn't matter for your workload.

### Which is cheaper, Nemotron 3.5 Lightning or Solar Pro4?

Nemotron 3.5 Lightning is cheaper. It lists at $0.05 per million input tokens and $0.20 per million output tokens; Solar Pro4 lists at $0.30 and $1.20.

### Is Nemotron 3.5 Lightning or Solar Pro4 better for coding?

They score almost the same on coding (40.4 vs 40.1); test both on your own repository before choosing.

### Which has the bigger context window?

Solar Pro4 does, with 524K tokens against 262K.

### How many benchmarks do Nemotron 3.5 Lightning and Solar Pro4 share?

17 benchmarks have published results for both models. Nemotron 3.5 Lightning has 18 scored results on Noometry and Solar Pro4 has 18.