Model comparison
C4ai Aya Expanse 8b vs Gemini 4 Argon
Gemini 4 Argon is the stronger model overall, scoring 56.5 to 34.9 on the Noometry Index.
Last verified . 12 shared benchmarks.
Cohere
GoogleSummary
- They share 12 benchmarks with published results for both. C4ai Aya Expanse 8b scores higher in 0 categories and Gemini 4 Argon in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Gemini 4 Argon leads 73.9 to 33.3.
- C4ai Aya Expanse 8b has downloadable open weights; the other is API-only.
Side by side
| C4ai Aya Expanse 8b | Gemini 4 Argon | |
|---|---|---|
| Provider | Cohere | |
| Noometry Index | 34.9 | 56.5 |
| Released | — | 2026-09-30 |
| Weights | Open | Proprietary |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 15 | 21 |
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Category by category
Coding Gemini 4 Argon leads
C4ai Aya Expanse 8b: 33.8 (#252), Gemini 4 Argon: 62.0 (#9)
| Benchmark | C4ai Aya Expanse 8b | Gemini 4 Argon |
|---|---|---|
| LMArena Coding | 1160 | 1550 |
| LMArena WebDev | — | 1678 |
| FrontierSWE | — | 55% |
| SciCode | — | 61.8% |
Agentic & Tool Use Not comparable
C4ai Aya Expanse 8b: —, Gemini 4 Argon: 49.2 (#8)
| Benchmark | C4ai Aya Expanse 8b | Gemini 4 Argon |
|---|---|---|
| APEX-Agents | — | 82.2% |
| Vending-Bench 2 | — | 13,718 |
Reasoning Gemini 4 Argon leads
C4ai Aya Expanse 8b: 22.4 (#197), Gemini 4 Argon: 44.2 (#47)
| Benchmark | C4ai Aya Expanse 8b | Gemini 4 Argon |
|---|---|---|
| LMArena Hard Prompts | 1156 | 1548 |
| CritPt | — | 27.1% |
Math Gemini 4 Argon leads
C4ai Aya Expanse 8b: 33.3 (#203), Gemini 4 Argon: 73.9 (#17)
| Benchmark | C4ai Aya Expanse 8b | Gemini 4 Argon |
|---|---|---|
| LMArena Math | 1168 | 1536 |
| ProofBench | — | 99% |
Knowledge Gemini 4 Argon leads
C4ai Aya Expanse 8b: 33.6 (#201), Gemini 4 Argon: 43.9 (#89)
| Benchmark | C4ai Aya Expanse 8b | Gemini 4 Argon |
|---|---|---|
| LMArena Expert | 1153 | 1553 |
| Vectara Hallucination Rate | 9.5% | — |
Multimodal Not comparable
C4ai Aya Expanse 8b: —, Gemini 4 Argon: 46.5 (#14)
| Benchmark | C4ai Aya Expanse 8b | Gemini 4 Argon |
|---|---|---|
| Blueprint-Bench 2 | — | 54.4% |
Multilingual Gemini 4 Argon leads
C4ai Aya Expanse 8b: 36.1 (#242), Gemini 4 Argon: 60.3 (#1)
| Benchmark | C4ai Aya Expanse 8b | Gemini 4 Argon |
|---|---|---|
| LMArena Non-English | 1180 | 1523 |
| LMArena Chinese | 1181 | 1610 |
| LMArena Russian | 1197 | 1537 |
| LMArena German | 1188 | — |
| LMArena Japanese | 1120 | — |
| LMArena Spanish | — | 1497 |
Instruction Following Gemini 4 Argon leads
C4ai Aya Expanse 8b: 60.1 (#253), Gemini 4 Argon: 80.1 (#2)
| Benchmark | C4ai Aya Expanse 8b | Gemini 4 Argon |
|---|---|---|
| LMArena Instruction Following | 1155 | 1538 |
Long Context Gemini 4 Argon leads
C4ai Aya Expanse 8b: 36.1 (#236), Gemini 4 Argon: 47.6 (#15)
| Benchmark | C4ai Aya Expanse 8b | Gemini 4 Argon |
|---|---|---|
| LMArena Longer Query | 1191 | 1549 |
Writing & Preference Gemini 4 Argon leads
C4ai Aya Expanse 8b: 39.0 (#250), Gemini 4 Argon: 71.4 (#19)
| Benchmark | C4ai Aya Expanse 8b | Gemini 4 Argon |
|---|---|---|
| LMArena Text | 1185 | 1534 |
| LMArena Creative Writing | 1168 | 1531 |
| LMArena Multi-Turn | 1160 | 1557 |
Frequently asked questions
Is C4ai Aya Expanse 8b better than Gemini 4 Argon?
Gemini 4 Argon is the stronger model overall, scoring 56.5 to 34.9 on the Noometry Index.
Is C4ai Aya Expanse 8b or Gemini 4 Argon better for coding?
Gemini 4 Argon scores higher on coding benchmarks: 62.0 versus 33.8 in the Noometry coding category.
How many benchmarks do C4ai Aya Expanse 8b and Gemini 4 Argon share?
12 benchmarks have published results for both models. C4ai Aya Expanse 8b has 15 scored results on Noometry and Gemini 4 Argon has 21.