Model comparison
Qwen2.5 Plus 1127 vs Step 5 Preview
Step 5 Preview is the stronger model overall, scoring 47.9 to 38.8 on the Noometry Index.
Last verified . 12 shared benchmarks.
Alibaba (Qwen)
StepFunSummary
- They share 12 benchmarks with published results for both. Qwen2.5 Plus 1127 scores higher in 0 categories and Step 5 Preview in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Step 5 Preview leads 40.0 to 25.9.
Side by side
| Qwen2.5 Plus 1127 | Step 5 Preview | |
|---|---|---|
| Provider | Alibaba (Qwen) | StepFun |
| Noometry Index | 38.8 | 47.9 |
| Released | — | 2026-09-16 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1.02M |
| Max output | — | 66K |
| Input $ / M tokens | — | $1 |
| Output $ / M tokens | — | $2.70 |
| Results tracked | 14 | 18 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Step 5 Preview leads
Qwen2.5 Plus 1127: 38.5 (#175), Step 5 Preview: 51.8 (#36)
| Benchmark | Qwen2.5 Plus 1127 | Step 5 Preview |
|---|---|---|
| LMArena Coding | 1314 | 1480 |
| LMArena WebDev | — | 1564 |
| SciCode | — | 58.9% |
Reasoning Step 5 Preview leads
Qwen2.5 Plus 1127: 25.9 (#141), Step 5 Preview: 40.0 (#57)
| Benchmark | Qwen2.5 Plus 1127 | Step 5 Preview |
|---|---|---|
| LMArena Hard Prompts | 1299 | 1465 |
| CritPt | — | 20.9% |
Math Step 5 Preview leads
Qwen2.5 Plus 1127: 36.1 (#174), Step 5 Preview: 46.1 (#72)
| Benchmark | Qwen2.5 Plus 1127 | Step 5 Preview |
|---|---|---|
| LMArena Math | 1298 | 1470 |
| ProofBench | — | 42% |
Knowledge Step 5 Preview leads
Qwen2.5 Plus 1127: 35.5 (#183), Step 5 Preview: 41.2 (#112)
| Benchmark | Qwen2.5 Plus 1127 | Step 5 Preview |
|---|---|---|
| LMArena Expert | 1289 | 1470 |
Multimodal Not comparable
Qwen2.5 Plus 1127: —, Step 5 Preview: 41.0 (#41)
| Benchmark | Qwen2.5 Plus 1127 | Step 5 Preview |
|---|---|---|
| LMArena Vision | — | 1267 |
Multilingual Step 5 Preview leads
Qwen2.5 Plus 1127: 41.9 (#201), Step 5 Preview: 53.8 (#54)
| Benchmark | Qwen2.5 Plus 1127 | Step 5 Preview |
|---|---|---|
| LMArena Non-English | 1265 | 1432 |
| LMArena Chinese | 1314 | 1519 |
| LMArena Russian | 1271 | 1436 |
| LMArena German | 1231 | — |
| LMArena Japanese | 1207 | — |
| LMArena Spanish | — | 1439 |
Instruction Following Step 5 Preview leads
Qwen2.5 Plus 1127: 67.2 (#199), Step 5 Preview: 76.0 (#50)
| Benchmark | Qwen2.5 Plus 1127 | Step 5 Preview |
|---|---|---|
| LMArena Instruction Following | 1275 | 1444 |
Long Context Step 5 Preview leads
Qwen2.5 Plus 1127: 39.2 (#184), Step 5 Preview: 44.5 (#64)
| Benchmark | Qwen2.5 Plus 1127 | Step 5 Preview |
|---|---|---|
| LMArena Longer Query | 1292 | 1455 |
Writing & Preference Step 5 Preview leads
Qwen2.5 Plus 1127: 49.4 (#192), Step 5 Preview: 62.8 (#71)
| Benchmark | Qwen2.5 Plus 1127 | Step 5 Preview |
|---|---|---|
| LMArena Text | 1299 | 1442 |
| LMArena Creative Writing | 1262 | 1410 |
| LMArena Multi-Turn | 1299 | 1447 |
Frequently asked questions
Is Qwen2.5 Plus 1127 better than Step 5 Preview?
Step 5 Preview is the stronger model overall, scoring 47.9 to 38.8 on the Noometry Index.
Is Qwen2.5 Plus 1127 or Step 5 Preview better for coding?
Step 5 Preview scores higher on coding benchmarks: 51.8 versus 38.5 in the Noometry coding category.
How many benchmarks do Qwen2.5 Plus 1127 and Step 5 Preview share?
12 benchmarks have published results for both models. Qwen2.5 Plus 1127 has 14 scored results on Noometry and Step 5 Preview has 18.