# C4ai Aya Expanse 8b vs Olmo 7b Instruct

> C4ai Aya Expanse 8b is the stronger model overall, scoring 34.9 to 30.3 on the Noometry Index.

- Canonical page: https://noometry.com/compare/c4ai-aya-expanse-8b-vs-olmo-7b-instruct
- Last updated: 2026-10-12
- Shared benchmarks: 10

## Summary

- They share 10 benchmarks with published results for both. C4ai Aya Expanse 8b scores higher in 6 categories and Olmo 7b Instruct in 0 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where C4ai Aya Expanse 8b leads 39.0 to 25.8.

## Snapshot

| | C4ai Aya Expanse 8b | Olmo 7b Instruct |
|---|---|---|
| Provider | Cohere | Allen Institute for AI (Ai2) |
| Noometry Index | 34.9 | 30.3 |
| Rank | 229 | 295 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Open | Open |

## Coding

- C4ai Aya Expanse 8b: 33.8 (#252)
- Olmo 7b Instruct: 29.6 (#303)

| Benchmark | C4ai Aya Expanse 8b | Olmo 7b Instruct |
|---|---|---|
| LMArena Coding | 1160 | 1016 |

## Reasoning

- C4ai Aya Expanse 8b: 22.4 (#197)
- Olmo 7b Instruct: 18.8 (#274)

| Benchmark | C4ai Aya Expanse 8b | Olmo 7b Instruct |
|---|---|---|
| LMArena Hard Prompts | 1156 | 993 |

## Math

- C4ai Aya Expanse 8b: 33.3 (#203)
- Olmo 7b Instruct: 30.2 (#237)

| Benchmark | C4ai Aya Expanse 8b | Olmo 7b Instruct |
|---|---|---|
| LMArena Math | 1168 | 1018 |

## Knowledge

- C4ai Aya Expanse 8b: 33.6 (#201)
- Olmo 7b Instruct: —

| Benchmark | C4ai Aya Expanse 8b | Olmo 7b Instruct |
|---|---|---|
| Vectara Hallucination Rate | 9.5% | — |
| LMArena Expert | 1153 | — |

## Multilingual

- C4ai Aya Expanse 8b: 36.1 (#242)
- Olmo 7b Instruct: 24.0 (#291)

| Benchmark | C4ai Aya Expanse 8b | Olmo 7b Instruct |
|---|---|---|
| LMArena Non-English | 1180 | 977 |
| LMArena Chinese | 1181 | 1014 |
| LMArena Russian | 1197 | 947 |
| LMArena German | 1188 | — |
| LMArena Japanese | 1120 | — |

## Instruction Following

- C4ai Aya Expanse 8b: 60.1 (#253)
- Olmo 7b Instruct: 49.0 (#301)

| Benchmark | C4ai Aya Expanse 8b | Olmo 7b Instruct |
|---|---|---|
| LMArena Instruction Following | 1155 | 978 |

## Long Context

- C4ai Aya Expanse 8b: 36.1 (#236)
- Olmo 7b Instruct: —

| Benchmark | C4ai Aya Expanse 8b | Olmo 7b Instruct |
|---|---|---|
| LMArena Longer Query | 1191 | — |

## Writing & Preference

- C4ai Aya Expanse 8b: 39.0 (#250)
- Olmo 7b Instruct: 25.8 (#303)

| Benchmark | C4ai Aya Expanse 8b | Olmo 7b Instruct |
|---|---|---|
| LMArena Text | 1185 | 1032 |
| LMArena Creative Writing | 1168 | 990 |
| LMArena Multi-Turn | 1160 | 1007 |

## FAQ

### Is C4ai Aya Expanse 8b better than Olmo 7b Instruct?

C4ai Aya Expanse 8b is the stronger model overall, scoring 34.9 to 30.3 on the Noometry Index.

### Is C4ai Aya Expanse 8b or Olmo 7b Instruct better for coding?

C4ai Aya Expanse 8b scores higher on coding benchmarks: 33.8 versus 29.6 in the Noometry coding category.

### How many benchmarks do C4ai Aya Expanse 8b and Olmo 7b Instruct share?

10 benchmarks have published results for both models. C4ai Aya Expanse 8b has 15 scored results on Noometry and Olmo 7b Instruct has 10.