# C4ai Aya Expanse 8b vs Devstral Small 2505

> C4ai Aya Expanse 8b and Devstral Small 2505 score almost the same on the Noometry Index (34.3 vs 33.9), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/c4ai-aya-expanse-8b-vs-devstral-small
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in coding, where Devstral Small 2505 leads 38.6 to 33.2.
- Devstral Small 2505 accepts more context: 128K tokens versus 8K.

## Snapshot

| | C4ai Aya Expanse 8b | Devstral Small 2505 |
|---|---|---|
| Provider | Cohere | Mistral AI |
| Noometry Index | 34.3 | 33.9 |
| Rank | 227 | 228 |
| Context | 8K | 128K |
| Input $/M | — | $0.10 |
| Output $/M | — | $0.30 |
| Weights | Open | Open |

## Coding

- C4ai Aya Expanse 8b: 33.2 (#252)
- Devstral Small 2505: 38.6 (#160)

| Benchmark | C4ai Aya Expanse 8b | Devstral Small 2505 |
|---|---|---|
| SWE-bench Verified (bash only) | — | 56.4% |
| SciCode | — | 28.8% |
| LMArena Coding | 1161 | — |

## Reasoning

- C4ai Aya Expanse 8b: 21.4 (#198)
- Devstral Small 2505: 19.1 (#243)

| Benchmark | C4ai Aya Expanse 8b | Devstral Small 2505 |
|---|---|---|
| Kagi LLM Benchmark | — | 37.7% |
| CritPt | — | 0% |
| LMArena Hard Prompts | 1156 | — |

## Math

- C4ai Aya Expanse 8b: 30.8 (#204)
- Devstral Small 2505: —

| Benchmark | C4ai Aya Expanse 8b | Devstral Small 2505 |
|---|---|---|
| LMArena Math | 1168 | — |

## Knowledge

- C4ai Aya Expanse 8b: 33.0 (#197)
- Devstral Small 2505: —

| Benchmark | C4ai Aya Expanse 8b | Devstral Small 2505 |
|---|---|---|
| Vectara Hallucination Rate | 9.5% | — |
| LMArena Expert | 1153 | — |

## Multilingual

- C4ai Aya Expanse 8b: 36.3 (#237)
- Devstral Small 2505: —

| Benchmark | C4ai Aya Expanse 8b | Devstral Small 2505 |
|---|---|---|
| LMArena Non-English | 1180 | — |
| LMArena Chinese | 1181 | — |
| LMArena German | 1188 | — |
| LMArena Japanese | 1120 | — |
| LMArena Russian | 1197 | — |

## Instruction Following

- C4ai Aya Expanse 8b: 60.4 (#248)
- Devstral Small 2505: —

| Benchmark | C4ai Aya Expanse 8b | Devstral Small 2505 |
|---|---|---|
| LMArena Instruction Following | 1155 | — |

## Long Context

- C4ai Aya Expanse 8b: 36.1 (#231)
- Devstral Small 2505: —

| Benchmark | C4ai Aya Expanse 8b | Devstral Small 2505 |
|---|---|---|
| LMArena Longer Query | 1192 | — |

## Writing & Preference

- C4ai Aya Expanse 8b: 39.2 (#245)
- Devstral Small 2505: —

| Benchmark | C4ai Aya Expanse 8b | Devstral Small 2505 |
|---|---|---|
| LMArena Text | 1185 | — |
| LMArena Creative Writing | 1168 | — |
| LMArena Multi-Turn | 1160 | — |

## FAQ

### Is C4ai Aya Expanse 8b better than Devstral Small 2505?

C4ai Aya Expanse 8b and Devstral Small 2505 score almost the same on the Noometry Index (34.3 vs 33.9), so choose on price, context window or the category you care about most.

### Is C4ai Aya Expanse 8b or Devstral Small 2505 better for coding?

Devstral Small 2505 scores higher on coding benchmarks: 38.6 versus 33.2 in the Noometry coding category.

### Which has the bigger context window?

Devstral Small 2505 does, with 128K tokens against 8K.

### How many benchmarks do C4ai Aya Expanse 8b and Devstral Small 2505 share?

0 benchmarks have published results for both models. C4ai Aya Expanse 8b has 15 scored results on Noometry and Devstral Small 2505 has 4.