# C4ai Aya Expanse 32b vs o1

> o1 is the stronger model overall, scoring 40.9 to 35.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/c4ai-aya-expanse-32b-vs-o1
- Last updated: 2026-10-10
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. C4ai Aya Expanse 32b scores higher in 0 categories and o1 in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where o1 leads 55.6 to 42.2.
- o1 accepts more context: 200K tokens versus 128K.
- C4ai Aya Expanse 32b has downloadable open weights; the other is API-only.

## Snapshot

| | C4ai Aya Expanse 32b | o1 |
|---|---|---|
| Provider | Cohere | OpenAI |
| Noometry Index | 35.9 | 40.9 |
| Rank | 221 | 143 |
| Context | 128K | 200K |
| Input $/M | — | $15 |
| Output $/M | — | $60 |
| Weights | Open | Proprietary |

## Coding

- C4ai Aya Expanse 32b: 34.8 (#231)
- o1: 46.1 (#70)

| Benchmark | C4ai Aya Expanse 32b | o1 |
|---|---|---|
| LMArena Coding | 1197 | 1367 |
| Aider Polyglot | — | 61.7% |
| WeirdML | — | 47.6% |
| LiveBench Coding | — | 69.7% |
| CadEval | — | 56% |
| HumanEval+ | — | 89% |
| MBPP+ | — | 80.2% |

## Agentic & Tool Use

- C4ai Aya Expanse 32b: —
- o1: 24.6 (#117)

| Benchmark | C4ai Aya Expanse 32b | o1 |
|---|---|---|
| Cybench | — | 10% |
| METR Time Horizons | — | 51.1% |

## Reasoning

- C4ai Aya Expanse 32b: 23.3 (#180)
- o1: 27.9 (#111)

| Benchmark | C4ai Aya Expanse 32b | o1 |
|---|---|---|
| LMArena Hard Prompts | 1193 | 1371 |
| SimpleBench | — | 41.7% |
| ARC-AGI-1 | — | 30.7% |
| Chess Puzzles | — | 15% |
| EnigmaEval | — | 5.7% |
| LiveBench Reasoning | — | 91.6% |
| DTBench | — | 74.7% |
| LiveBench Data Analysis | — | 65.5% |
| LMCA | — | 22.3% |
| Epoch Capabilities Index | — | 141.91 |
| LiveBench | — | 75.7% |

## Math

- C4ai Aya Expanse 32b: 34.0 (#197)
- o1: 36.1 (#175)

| Benchmark | C4ai Aya Expanse 32b | o1 |
|---|---|---|
| LMArena Math | 1200 | 1388 |
| FrontierMath (Tiers 1-3) | — | 14.7% |
| OTIS Mock AIME 2024-2025 | — | 73.3% |
| LiveBench Math | — | 80.3% |
| MATH Level 5 | — | 94.7% |
| FrontierMath (Feb 2025 set) | — | 9.3% |

## Knowledge

- C4ai Aya Expanse 32b: 33.2 (#206)
- o1: 41.5 (#110)

| Benchmark | C4ai Aya Expanse 32b | o1 |
|---|---|---|
| LMArena Expert | 1182 | 1361 |
| GPQA Diamond | — | 76.8% |
| Humanity's Last Exam | — | 8% |
| SimpleQA Verified | — | 41.1% |
| Confabulations | — | 11.7% |
| Vectara Hallucination Rate | 10.9% | — |

## Multimodal

- C4ai Aya Expanse 32b: —
- o1: 34.2 (#93)

| Benchmark | C4ai Aya Expanse 32b | o1 |
|---|---|---|
| LMArena Vision | — | 1168 |
| GeoBench | — | 80% |
| VPCT | — | 37% |
| SpatialViz-Bench | — | 41.4% |

## Multilingual

- C4ai Aya Expanse 32b: 38.4 (#230)
- o1: 48.6 (#142)

| Benchmark | C4ai Aya Expanse 32b | o1 |
|---|---|---|
| LMArena Non-English | 1213 | 1358 |
| LMArena Chinese | 1211 | 1394 |
| LMArena French | 1248 | 1344 |
| LMArena German | 1199 | 1337 |
| LMArena Japanese | 1163 | 1346 |
| LMArena Korean | 1158 | 1396 |
| LMArena Russian | 1227 | 1356 |
| LMArena Spanish | 1193 | 1345 |

## Instruction Following

- C4ai Aya Expanse 32b: 62.6 (#237)
- o1: 74.8 (#86)

| Benchmark | C4ai Aya Expanse 32b | o1 |
|---|---|---|
| LMArena Instruction Following | 1196 | 1367 |
| LiveBench Instruction Following | — | 81.5% |

## Long Context

- C4ai Aya Expanse 32b: 37.2 (#220)
- o1: 50.3 (#9)

| Benchmark | C4ai Aya Expanse 32b | o1 |
|---|---|---|
| LMArena Longer Query | 1228 | 1378 |
| Fiction.LiveBench | — | 83.3% |

## Writing & Preference

- C4ai Aya Expanse 32b: 42.2 (#235)
- o1: 55.6 (#144)

| Benchmark | C4ai Aya Expanse 32b | o1 |
|---|---|---|
| LMArena Text | 1224 | 1366 |
| LMArena Creative Writing | 1200 | 1348 |
| LMArena Multi-Turn | 1190 | 1369 |
| Short-Story Creative Writing | — | 70.2% |
| LiveBench Language | — | 65.4% |

## FAQ

### Is C4ai Aya Expanse 32b better than o1?

o1 is the stronger model overall, scoring 40.9 to 35.9 on the Noometry Index.

### Is C4ai Aya Expanse 32b or o1 better for coding?

o1 scores higher on coding benchmarks: 46.1 versus 34.8 in the Noometry coding category.

### Which has the bigger context window?

o1 does, with 200K tokens against 128K.

### How many benchmarks do C4ai Aya Expanse 32b and o1 share?

17 benchmarks have published results for both models. C4ai Aya Expanse 32b has 18 scored results on Noometry and o1 has 52.