Model comparison
C4ai Aya Expanse 8b vs Step 3.7 Flash
Step 3.7 Flash is the stronger model overall, scoring 36.5 to 34.3 on the Noometry Index.
Last verified . 0 shared benchmarks.
Cohere
StepFunSummary
- The widest gap is in math, where Step 3.7 Flash leads 40.9 to 30.8.
- Step 3.7 Flash accepts more context: 256K tokens versus 8K.
Side by side
| C4ai Aya Expanse 8b | Step 3.7 Flash | |
|---|---|---|
| Provider | Cohere | StepFun |
| Noometry Index | 34.3 | 36.5 |
| Released | 2024-10-24 | 2026-05-29 |
| Weights | Open | Open |
| Context window | 8K | 256K |
| Max output | 4K | 256K |
| Input $ / M tokens | — | $0.18 |
| Output $ / M tokens | — | $1.11 |
| Results tracked | 15 | 5 |
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Category by category
Coding Step 3.7 Flash leads
C4ai Aya Expanse 8b: 33.2 (#252), Step 3.7 Flash: 39.4 (#147)
| Benchmark | C4ai Aya Expanse 8b | Step 3.7 Flash |
|---|---|---|
| SciCode | — | 40% |
| LMArena Coding | 1161 | — |
| ALE-Bench | — | 694.12 |
Reasoning Too close to call
C4ai Aya Expanse 8b: 21.4 (#198), Step 3.7 Flash: 20.9 (#211)
| Benchmark | C4ai Aya Expanse 8b | Step 3.7 Flash |
|---|---|---|
| NYT Connections (extended) | — | 39.7% |
| CritPt | — | 2.3% |
| LMArena Hard Prompts | 1156 | — |
Math Step 3.7 Flash leads
C4ai Aya Expanse 8b: 30.8 (#204), Step 3.7 Flash: 40.9 (#74)
| Benchmark | C4ai Aya Expanse 8b | Step 3.7 Flash |
|---|---|---|
| MathArena Final-Answer Competitions | — | 68.5% |
| LMArena Math | 1168 | — |
Knowledge Not comparable
C4ai Aya Expanse 8b: 33.0 (#197), Step 3.7 Flash: —
| Benchmark | C4ai Aya Expanse 8b | Step 3.7 Flash |
|---|---|---|
| Vectara Hallucination Rate | 9.5% | — |
| LMArena Expert | 1153 | — |
Multilingual Not comparable
C4ai Aya Expanse 8b: 36.3 (#237), Step 3.7 Flash: —
| Benchmark | C4ai Aya Expanse 8b | Step 3.7 Flash |
|---|---|---|
| LMArena Non-English | 1180 | — |
| LMArena Chinese | 1181 | — |
| LMArena German | 1188 | — |
| LMArena Japanese | 1120 | — |
| LMArena Russian | 1197 | — |
Instruction Following Not comparable
C4ai Aya Expanse 8b: 60.4 (#248), Step 3.7 Flash: —
| Benchmark | C4ai Aya Expanse 8b | Step 3.7 Flash |
|---|---|---|
| LMArena Instruction Following | 1155 | — |
Long Context Not comparable
C4ai Aya Expanse 8b: 36.1 (#231), Step 3.7 Flash: —
| Benchmark | C4ai Aya Expanse 8b | Step 3.7 Flash |
|---|---|---|
| LMArena Longer Query | 1192 | — |
Writing & Preference Not comparable
C4ai Aya Expanse 8b: 39.2 (#245), Step 3.7 Flash: —
| Benchmark | C4ai Aya Expanse 8b | Step 3.7 Flash |
|---|---|---|
| LMArena Text | 1185 | — |
| LMArena Creative Writing | 1168 | — |
| LMArena Multi-Turn | 1160 | — |
Frequently asked questions
Is C4ai Aya Expanse 8b better than Step 3.7 Flash?
Step 3.7 Flash is the stronger model overall, scoring 36.5 to 34.3 on the Noometry Index.
Is C4ai Aya Expanse 8b or Step 3.7 Flash better for coding?
Step 3.7 Flash scores higher on coding benchmarks: 39.4 versus 33.2 in the Noometry coding category.
Which has the bigger context window?
Step 3.7 Flash does, with 256K tokens against 8K.
How many benchmarks do C4ai Aya Expanse 8b and Step 3.7 Flash share?
0 benchmarks have published results for both models. C4ai Aya Expanse 8b has 15 scored results on Noometry and Step 3.7 Flash has 5.