# C4ai Aya Expanse 8b vs Trinity Large Thinking

> Trinity Large Thinking is the stronger model overall, scoring 38.1 to 34.3 on the Noometry Index.

- Canonical page: https://noometry.com/compare/c4ai-aya-expanse-8b-vs-trinity-large-thinking
- Last updated: 2026-10-10
- Shared benchmarks: 15

## Summary

- They share 15 benchmarks with published results for both. C4ai Aya Expanse 8b scores higher in 1 category and Trinity Large Thinking in 7 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Trinity Large Thinking leads 54.0 to 39.2.
- Trinity Large Thinking accepts more context: 262K tokens versus 8K.

## Snapshot

| | C4ai Aya Expanse 8b | Trinity Large Thinking |
|---|---|---|
| Provider | Cohere | Arcee AI |
| Noometry Index | 34.3 | 38.1 |
| Rank | 227 | 180 |
| Context | 8K | 262K |
| Input $/M | — | $0.25 |
| Output $/M | — | $0.80 |
| Weights | Open | Open |

## Coding

- C4ai Aya Expanse 8b: 33.2 (#252)
- Trinity Large Thinking: 33.8 (#238)

| Benchmark | C4ai Aya Expanse 8b | Trinity Large Thinking |
|---|---|---|
| LMArena Coding | 1161 | 1381 |
| LMArena WebDev | — | 1238 |
| SciCode | — | 36.1% |

## Reasoning

- C4ai Aya Expanse 8b: 21.4 (#198)
- Trinity Large Thinking: 16.3 (#298)

| Benchmark | C4ai Aya Expanse 8b | Trinity Large Thinking |
|---|---|---|
| LMArena Hard Prompts | 1156 | 1350 |
| NYT Connections (extended) | — | 16.5% |
| CritPt | — | 0.9% |
| Thematic Generalization | — | 41.6% |
| Surface Evolver Bench | — | 15.6% |

## Math

- C4ai Aya Expanse 8b: 30.8 (#204)
- Trinity Large Thinking: 34.9 (#149)

| Benchmark | C4ai Aya Expanse 8b | Trinity Large Thinking |
|---|---|---|
| LMArena Math | 1168 | 1366 |

## Knowledge

- C4ai Aya Expanse 8b: 33.0 (#197)
- Trinity Large Thinking: 40.3 (#107)

| Benchmark | C4ai Aya Expanse 8b | Trinity Large Thinking |
|---|---|---|
| Vectara Hallucination Rate | 9.5% | 6.9% |
| LMArena Expert | 1153 | 1359 |

## Multilingual

- C4ai Aya Expanse 8b: 36.3 (#237)
- Trinity Large Thinking: 46.4 (#155)

| Benchmark | C4ai Aya Expanse 8b | Trinity Large Thinking |
|---|---|---|
| LMArena Non-English | 1180 | 1325 |
| LMArena Chinese | 1181 | 1372 |
| LMArena German | 1188 | 1356 |
| LMArena Japanese | 1120 | 1312 |
| LMArena Russian | 1197 | 1338 |
| LMArena French | — | 1374 |
| LMArena Korean | — | 1304 |
| LMArena Spanish | — | 1356 |

## Instruction Following

- C4ai Aya Expanse 8b: 60.4 (#248)
- Trinity Large Thinking: 70.7 (#157)

| Benchmark | C4ai Aya Expanse 8b | Trinity Large Thinking |
|---|---|---|
| LMArena Instruction Following | 1155 | 1334 |

## Long Context

- C4ai Aya Expanse 8b: 36.1 (#231)
- Trinity Large Thinking: 41.2 (#139)

| Benchmark | C4ai Aya Expanse 8b | Trinity Large Thinking |
|---|---|---|
| LMArena Longer Query | 1192 | 1355 |

## Writing & Preference

- C4ai Aya Expanse 8b: 39.2 (#245)
- Trinity Large Thinking: 54.0 (#152)

| Benchmark | C4ai Aya Expanse 8b | Trinity Large Thinking |
|---|---|---|
| LMArena Text | 1185 | 1340 |
| LMArena Creative Writing | 1168 | 1321 |
| LMArena Multi-Turn | 1160 | 1342 |

## FAQ

### Is C4ai Aya Expanse 8b better than Trinity Large Thinking?

Trinity Large Thinking is the stronger model overall, scoring 38.1 to 34.3 on the Noometry Index.

### Is C4ai Aya Expanse 8b or Trinity Large Thinking better for coding?

They score almost the same on coding (33.2 vs 33.8); test both on your own repository before choosing.

### Which has the bigger context window?

Trinity Large Thinking does, with 262K tokens against 8K.

### How many benchmarks do C4ai Aya Expanse 8b and Trinity Large Thinking share?

15 benchmarks have published results for both models. C4ai Aya Expanse 8b has 15 scored results on Noometry and Trinity Large Thinking has 24.