Model comparison
C4ai Aya Expanse 8b vs Gemma 2 9B
C4ai Aya Expanse 8b is the stronger model overall, scoring 34.9 to 25.9 on the Noometry Index.
Last verified . 14 shared benchmarks.
Cohere
GoogleSummary
- They share 14 benchmarks with published results for both. C4ai Aya Expanse 8b scores higher in 6 categories and Gemma 2 9B in 2 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where C4ai Aya Expanse 8b leads 33.6 to 9.7.
Side by side
| C4ai Aya Expanse 8b | Gemma 2 9B | |
|---|---|---|
| Provider | Cohere | |
| Noometry Index | 34.9 | 25.9 |
| Released | — | 2024-06-24 |
| Weights | Open | Open |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 15 | 35 |
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Category by category
Coding C4ai Aya Expanse 8b leads
C4ai Aya Expanse 8b: 33.8 (#252), Gemma 2 9B: 29.4 (#304)
| Benchmark | C4ai Aya Expanse 8b | Gemma 2 9B |
|---|---|---|
| LMArena Coding | 1160 | 1173 |
| BigCodeBench Instruct | — | 34.7% |
| LiveBench Coding | — | 22.5% |
| BigCodeBench Complete | — | 40.6% |
Reasoning C4ai Aya Expanse 8b leads
C4ai Aya Expanse 8b: 22.4 (#197), Gemma 2 9B: 15.9 (#309)
| Benchmark | C4ai Aya Expanse 8b | Gemma 2 9B |
|---|---|---|
| LMArena Hard Prompts | 1156 | 1171 |
| LiveBench Reasoning | — | 15.2% |
| LiveBench Data Analysis | — | 36.4% |
| Epoch Capabilities Index | — | 119.83 |
| LiveBench | — | 28.7% |
| PIQA | — | 83.7% |
Math C4ai Aya Expanse 8b leads
C4ai Aya Expanse 8b: 33.3 (#203), Gemma 2 9B: 9.9 (#318)
| Benchmark | C4ai Aya Expanse 8b | Gemma 2 9B |
|---|---|---|
| LMArena Math | 1168 | 1183 |
| OTIS Mock AIME 2024-2025 | — | 0.6% |
| LiveBench Math | — | 19.8% |
| MATH Level 5 | — | 21% |
| GSM8K | — | 84.9% |
Knowledge C4ai Aya Expanse 8b leads
C4ai Aya Expanse 8b: 33.6 (#201), Gemma 2 9B: 9.7 (#305)
| Benchmark | C4ai Aya Expanse 8b | Gemma 2 9B |
|---|---|---|
| LMArena Expert | 1153 | 1147 |
| GPQA Diamond | — | 27.5% |
| Vectara Hallucination Rate | 9.5% | — |
| BoolQ | — | 85.7% |
| MMLU | — | 72.1% |
Multilingual Too close to call
C4ai Aya Expanse 8b: 36.1 (#242), Gemma 2 9B: 36.6 (#238)
| Benchmark | C4ai Aya Expanse 8b | Gemma 2 9B |
|---|---|---|
| LMArena Non-English | 1180 | 1188 |
| LMArena Chinese | 1181 | 1185 |
| LMArena German | 1188 | 1186 |
| LMArena Japanese | 1120 | 1144 |
| LMArena Russian | 1197 | 1200 |
| LMArena French | — | 1190 |
| LMArena Korean | — | 1137 |
| LMArena Spanish | — | 1200 |
Instruction Following C4ai Aya Expanse 8b leads
C4ai Aya Expanse 8b: 60.1 (#253), Gemma 2 9B: 57.6 (#269)
| Benchmark | C4ai Aya Expanse 8b | Gemma 2 9B |
|---|---|---|
| LMArena Instruction Following | 1155 | 1178 |
| LiveBench Instruction Following | — | 52.6% |
Long Context Too close to call
C4ai Aya Expanse 8b: 36.1 (#236), Gemma 2 9B: 36.3 (#233)
| Benchmark | C4ai Aya Expanse 8b | Gemma 2 9B |
|---|---|---|
| LMArena Longer Query | 1191 | 1197 |
Writing & Preference C4ai Aya Expanse 8b leads
C4ai Aya Expanse 8b: 39.0 (#250), Gemma 2 9B: 32.1 (#281)
| Benchmark | C4ai Aya Expanse 8b | Gemma 2 9B |
|---|---|---|
| LMArena Text | 1185 | 1207 |
| LMArena Creative Writing | 1168 | 1206 |
| LMArena Multi-Turn | 1160 | 1193 |
| EQ-Bench Creative Writing | — | 841 |
| LiveBench Language | — | 25.5% |
Frequently asked questions
Is C4ai Aya Expanse 8b better than Gemma 2 9B?
C4ai Aya Expanse 8b is the stronger model overall, scoring 34.9 to 25.9 on the Noometry Index.
Is C4ai Aya Expanse 8b or Gemma 2 9B better for coding?
C4ai Aya Expanse 8b scores higher on coding benchmarks: 33.8 versus 29.4 in the Noometry coding category.
How many benchmarks do C4ai Aya Expanse 8b and Gemma 2 9B share?
14 benchmarks have published results for both models. C4ai Aya Expanse 8b has 15 scored results on Noometry and Gemma 2 9B has 35.