Model comparison
Qwen2.5 Plus 1127 vs Step 5 Preview
Step 5 Preview is the stronger model overall, scoring 43.8 to 38.1 on the Noometry Index.
Last verified . 0 shared benchmarks.
Alibaba (Qwen)
StepFunSummary
- The widest gap is in reasoning, where Step 5 Preview leads 38.0 to 24.8.
Side by side
| Qwen2.5 Plus 1127 | Step 5 Preview | |
|---|---|---|
| Provider | Alibaba (Qwen) | StepFun |
| Noometry Index | 38.1 | 43.8 |
| 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 | 3 |
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Category by category
Coding Step 5 Preview leads
Qwen2.5 Plus 1127: 37.9 (#171), Step 5 Preview: 50.6 (#40)
| Benchmark | Qwen2.5 Plus 1127 | Step 5 Preview |
|---|---|---|
| LMArena WebDev | — | 1569 |
| SciCode | — | 58.9% |
| LMArena Coding | 1314 | — |
Reasoning Step 5 Preview leads
Qwen2.5 Plus 1127: 24.8 (#139), Step 5 Preview: 38.0 (#58)
| Benchmark | Qwen2.5 Plus 1127 | Step 5 Preview |
|---|---|---|
| CritPt | — | 20.9% |
| LMArena Hard Prompts | 1299 | — |
Math Not comparable
Qwen2.5 Plus 1127: 33.5 (#175), Step 5 Preview: —
| Benchmark | Qwen2.5 Plus 1127 | Step 5 Preview |
|---|---|---|
| LMArena Math | 1298 | — |
Knowledge Not comparable
Qwen2.5 Plus 1127: 34.9 (#179), Step 5 Preview: —
| Benchmark | Qwen2.5 Plus 1127 | Step 5 Preview |
|---|---|---|
| LMArena Expert | 1289 | — |
Multilingual Not comparable
Qwen2.5 Plus 1127: 42.1 (#196), Step 5 Preview: —
| Benchmark | Qwen2.5 Plus 1127 | Step 5 Preview |
|---|---|---|
| LMArena Non-English | 1265 | — |
| LMArena Chinese | 1314 | — |
| LMArena German | 1231 | — |
| LMArena Japanese | 1207 | — |
| LMArena Russian | 1271 | — |
Instruction Following Not comparable
Qwen2.5 Plus 1127: 67.4 (#194), Step 5 Preview: —
| Benchmark | Qwen2.5 Plus 1127 | Step 5 Preview |
|---|---|---|
| LMArena Instruction Following | 1275 | — |
Long Context Not comparable
Qwen2.5 Plus 1127: 39.2 (#180), Step 5 Preview: —
| Benchmark | Qwen2.5 Plus 1127 | Step 5 Preview |
|---|---|---|
| LMArena Longer Query | 1292 | — |
Writing & Preference Not comparable
Qwen2.5 Plus 1127: 49.5 (#186), Step 5 Preview: —
| Benchmark | Qwen2.5 Plus 1127 | Step 5 Preview |
|---|---|---|
| LMArena Text | 1299 | — |
| LMArena Creative Writing | 1262 | — |
| LMArena Multi-Turn | 1299 | — |
Frequently asked questions
Is Qwen2.5 Plus 1127 better than Step 5 Preview?
Step 5 Preview is the stronger model overall, scoring 43.8 to 38.1 on the Noometry Index.
Is Qwen2.5 Plus 1127 or Step 5 Preview better for coding?
Step 5 Preview scores higher on coding benchmarks: 50.6 versus 37.9 in the Noometry coding category.
How many benchmarks do Qwen2.5 Plus 1127 and Step 5 Preview share?
0 benchmarks have published results for both models. Qwen2.5 Plus 1127 has 14 scored results on Noometry and Step 5 Preview has 3.