Cohere, open weights
C4ai Aya Expanse 8b
C4ai Aya Expanse 8b by Cohere ranks 229th of 354 ranked models on the Noometry Index as of October 2026, with a score of 34.9. Its strongest category is reasoning, where it ranks 197th.
Last verified
Specifications
- Noometry rank
- #229 of 354
- Index score
- 34.9
- Evidence
- Confirmed 15 results
- Provider
Cohere- Released
- Unknown
- Weights
- Open weights
- Reasoning
- Unknown
- Context window
- —
- Max output
- —
- Input price
- Not listed
- Output price
- Not listed
- Blended price
- Not listed
- Output speed
- Not measured
- Value
- Not ranked
- Knowledge cutoff
- Unknown
Category scores
Each category score combines every public result we have in that category.
- Coding 33.8
- Reasoning 22.4
- Math 33.3
- Knowledge 33.6
- Multilingual 36.1
- Instruction Following 60.1
- Long Context 36.1
- Writing & Preference 39.0
| Category | Score | Rank | Results |
|---|---|---|---|
| Coding | 33.8 | #252 | 1 |
| Reasoning | 22.4 | #197 | 1 |
| Math | 33.3 | #203 | 1 |
| Knowledge | 33.6 | #201 | 2 |
| Multilingual | 36.1 | #242 | 1 |
| Instruction Following | 60.1 | #253 | 1 |
| Long Context | 36.1 | #236 | 1 |
| Writing & Preference | 39.0 | #250 | 3 |
Strengths and weaknesses
Categories where C4ai Aya Expanse 8b places highest and lowest among the models ranked in each, with its score against that category's median.
Strongest categories
Weakest categories
| Category | Score | vs median | Rank |
|---|---|---|---|
| Instruction Following | 60.1 | −11.1 | #253 of 305, top 83% |
| Multilingual | 36.1 | −11.3 | #242 of 297, top 82% |
| Writing & Preference | 39.0 | −14.8 | #250 of 312, top 81% |
Closest competitors
The models ranked just above and below C4ai Aya Expanse 8b. When scores are this close, price and speed are often the better way to choose.
| Model | Rank | Score | Blended $/M | Speed | |
|---|---|---|---|---|---|
| Qwen3 14B | #225 | 35.5 | $0.61 | 79 | Compare |
| DeepSeek-R1-Distill-Qwen-32B | #226 | 35.5 | — | — | Compare |
| Magistral Medium | #227 | 35.2 | $2.75 | 0 | Compare |
| Gemini 2.0 Flash (Feb 2025) | #228 | 35.1 | — | 92 | Compare |
| Qwen Max | #230 | 34.7 | $2.80 | — | Compare |
| Claude 3.5 Sonnet | #231 | 34.6 | — | — | Compare |
| Qwen3 Coder Next | #232 | 34.3 | $0.29 | — | Compare |
| Devstral Small 2505 | #233 | 34.3 | $0.15 | 88 | Compare |
Sponsored placements are available on pages like this one. Advertise on Noometry
Benchmark results
Every published result we track, with its source. Bold rows are the ones used for ranking; where several exist we prefer independent runs over self-reported numbers.
Coding
| Benchmark | Score | Position | Setting | Source | Date |
|---|---|---|---|---|---|
| LMArena Coding | 1160 | #255 of 294, top 87% | LMArena | 2026-10-08 |
Reasoning
| Benchmark | Score | Position | Setting | Source | Date |
|---|---|---|---|---|---|
| LMArena Hard Prompts | 1156 | #252 of 297, top 85% | LMArena | 2026-10-08 |
Math
| Benchmark | Score | Position | Setting | Source | Date |
|---|---|---|---|---|---|
| LMArena Math | 1168 | #244 of 285, top 86% | LMArena | 2026-10-08 |
Knowledge
| Benchmark | Score | Position | Setting | Source | Date |
|---|---|---|---|---|---|
| Vectara Hallucination Rate (lower is better) | 9.5% | #49 of 96, top 52% | Vectara Hallucination Leaderboard | ||
| LMArena Expert | 1153 | #234 of 273, top 86% | LMArena | 2026-10-08 |
Multilingual
| Benchmark | Score | Position | Setting | Source | Date |
|---|---|---|---|---|---|
| LMArena Non-English | 1180 | #242 of 297, top 82% | LMArena | 2026-10-08 | |
| LMArena Chinese | 1181 | #240 of 285, top 85% | LMArena | 2026-10-08 | |
| LMArena German | 1188 | #195 of 231, top 85% | LMArena | 2026-10-08 | |
| LMArena Japanese | 1120 | #183 of 211, top 87% | LMArena | 2026-10-08 | |
| LMArena Russian | 1197 | #235 of 283, top 84% | LMArena | 2026-10-08 |
Instruction Following
| Benchmark | Score | Position | Setting | Source | Date |
|---|---|---|---|---|---|
| LMArena Instruction Following | 1155 | #252 of 298, top 85% | LMArena | 2026-10-08 |
Long Context
| Benchmark | Score | Position | Setting | Source | Date |
|---|---|---|---|---|---|
| LMArena Longer Query | 1191 | #245 of 291, top 85% | LMArena | 2026-10-08 |
Writing & Preference
| Benchmark | Score | Position | Setting | Source | Date |
|---|---|---|---|---|---|
| LMArena Text | 1185 | #250 of 297, top 85% | LMArena | 2026-10-08 | |
| LMArena Creative Writing | 1168 | #246 of 295, top 84% | LMArena | 2026-10-08 | |
| LMArena Multi-Turn | 1160 | #250 of 295, top 85% | LMArena | 2026-10-08 |
Compare C4ai Aya Expanse 8b
- C4ai Aya Expanse 8b vs Gemini 2.0 Flash (Feb 2025)
- C4ai Aya Expanse 8b vs Qwen Max
- C4ai Aya Expanse 8b vs Magistral Medium
- C4ai Aya Expanse 8b vs Claude 3.5 Sonnet
- C4ai Aya Expanse 8b vs DeepSeek-R1-Distill-Qwen-32B
- C4ai Aya Expanse 8b vs Qwen3 Coder Next
- C4ai Aya Expanse 8b vs GPT-6 Astra
- C4ai Aya Expanse 8b vs Claude Fable 5.1
- C4ai Aya Expanse 8b vs Gemini 3.8 Flash
- C4ai Aya Expanse 8b vs Kimi K3
- C4ai Aya Expanse 8b vs Grok 4.6
- C4ai Aya Expanse 8b vs Qwen3.8 Max
- C4ai Aya Expanse 8b vs GLM-5.3
- C4ai Aya Expanse 8b vs Muse Spark 1.3
Other Cohere models
Frequently asked questions
How good is C4ai Aya Expanse 8b?
C4ai Aya Expanse 8b by Cohere ranks 229th of 354 ranked models on the Noometry Index as of October 2026, with a score of 34.9. Its strongest category is reasoning, where it ranks 197th.
Is C4ai Aya Expanse 8b open source?
Yes. C4ai Aya Expanse 8b's weights are downloadable; check the license for commercial terms.
What are C4ai Aya Expanse 8b's strengths and weaknesses?
Relative to other ranked models, C4ai Aya Expanse 8b places best in reasoning, math, knowledge and lowest in instruction following, multilingual, writing & preference.
What is C4ai Aya Expanse 8b best at?
Its best category is reasoning, where it ranks 197th on Noometry.