# Solar Pro4 vs Trinity Large Thinking

> Solar Pro4 is the stronger model overall, scoring 42.1 to 38.6 on the Noometry Index.

- Canonical page: https://noometry.com/compare/solar-pro4-vs-trinity-large-thinking
- Last updated: 2026-10-11
- Shared benchmarks: 18

## Summary

- They share 18 benchmarks with published results for both. Solar Pro4 scores higher in 7 categories and Trinity Large Thinking in 1 category; 7 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Solar Pro4 leads 28.5 to 16.9.
- Trinity Large Thinking is cheaper at $0.25 / $0.80 per million input/output tokens, against $0.30 / $1.20 for Solar Pro4.
- Solar Pro4 accepts more context: 524K tokens versus 262K.
- Trinity Large Thinking has downloadable open weights; the other is API-only.

## Snapshot

| | Solar Pro4 | Trinity Large Thinking |
|---|---|---|
| Provider | Upstage | Arcee AI |
| Noometry Index | 42.1 | 38.6 |
| Rank | 121 | 185 |
| Context | 524K | 262K |
| Input $/M | $0.30 | $0.25 |
| Output $/M | $1.20 | $0.80 |
| Weights | Proprietary | Open |

## Coding

- Solar Pro4: 40.1 (#149)
- Trinity Large Thinking: 34.1 (#244)

| Benchmark | Solar Pro4 | Trinity Large Thinking |
|---|---|---|
| LMArena WebDev | 1371 | 1238 |
| LMArena Coding | 1437 | 1381 |
| SciCode | — | 36.1% |

## Reasoning

- Solar Pro4: 28.5 (#104)
- Trinity Large Thinking: 16.9 (#298)

| Benchmark | Solar Pro4 | Trinity Large Thinking |
|---|---|---|
| LMArena Hard Prompts | 1399 | 1350 |
| NYT Connections (extended) | — | 16.5% |
| CritPt | — | 0.9% |
| Thematic Generalization | — | 41.6% |
| Surface Evolver Bench | — | 15.6% |

## Math

- Solar Pro4: 38.8 (#128)
- Trinity Large Thinking: 37.6 (#149)

| Benchmark | Solar Pro4 | Trinity Large Thinking |
|---|---|---|
| LMArena Math | 1416 | 1366 |

## Knowledge

- Solar Pro4: 39.8 (#129)
- Trinity Large Thinking: 40.9 (#113)

| Benchmark | Solar Pro4 | Trinity Large Thinking |
|---|---|---|
| LMArena Expert | 1427 | 1360 |
| Vectara Hallucination Rate | — | 6.9% |

## Multilingual

- Solar Pro4: 48.7 (#139)
- Trinity Large Thinking: 46.2 (#160)

| Benchmark | Solar Pro4 | Trinity Large Thinking |
|---|---|---|
| LMArena Non-English | 1361 | 1325 |
| LMArena Chinese | 1415 | 1373 |
| LMArena French | 1397 | 1374 |
| LMArena German | 1364 | 1356 |
| LMArena Japanese | 1309 | 1311 |
| LMArena Korean | 1382 | 1306 |
| LMArena Russian | 1360 | 1337 |
| LMArena Spanish | 1401 | 1357 |

## Instruction Following

- Solar Pro4: 72.7 (#132)
- Trinity Large Thinking: 70.5 (#162)

| Benchmark | Solar Pro4 | Trinity Large Thinking |
|---|---|---|
| LMArena Instruction Following | 1377 | 1334 |

## Long Context

- Solar Pro4: 42.1 (#130)
- Trinity Large Thinking: 41.3 (#144)

| Benchmark | Solar Pro4 | Trinity Large Thinking |
|---|---|---|
| LMArena Longer Query | 1381 | 1355 |

## Writing & Preference

- Solar Pro4: 56.5 (#138)
- Trinity Large Thinking: 53.8 (#158)

| Benchmark | Solar Pro4 | Trinity Large Thinking |
|---|---|---|
| LMArena Text | 1386 | 1340 |
| LMArena Creative Writing | 1316 | 1320 |
| LMArena Multi-Turn | 1385 | 1342 |

## FAQ

### Is Solar Pro4 better than Trinity Large Thinking?

Solar Pro4 is the stronger model overall, scoring 42.1 to 38.6 on the Noometry Index.

### Which is cheaper, Solar Pro4 or Trinity Large Thinking?

Trinity Large Thinking is cheaper. It lists at $0.25 per million input tokens and $0.80 per million output tokens; Solar Pro4 lists at $0.30 and $1.20.

### Is Solar Pro4 or Trinity Large Thinking better for coding?

Solar Pro4 scores higher on coding benchmarks: 40.1 versus 34.1 in the Noometry coding category.

### Which has the bigger context window?

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

### How many benchmarks do Solar Pro4 and Trinity Large Thinking share?

18 benchmarks have published results for both models. Solar Pro4 has 18 scored results on Noometry and Trinity Large Thinking has 24.