Model comparison
Qwen3.5 Max Preview vs Step 5 Preview
Step 5 Preview is the stronger model overall, scoring 47.9 to 45.3 on the Noometry Index.
Last verified . 13 shared benchmarks.
Alibaba (Qwen)
StepFunSummary
- They share 13 benchmarks with published results for both. Qwen3.5 Max Preview scores higher in 5 categories and Step 5 Preview in 3 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Step 5 Preview leads 40.0 to 30.8.
Side by side
| Qwen3.5 Max Preview | Step 5 Preview | |
|---|---|---|
| Provider | Alibaba (Qwen) | StepFun |
| Noometry Index | 45.3 | 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 | 17 | 18 |
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Category by category
Coding Step 5 Preview leads
Qwen3.5 Max Preview: 44.0 (#77), Step 5 Preview: 51.8 (#36)
| Benchmark | Qwen3.5 Max Preview | Step 5 Preview |
|---|---|---|
| LMArena Coding | 1487 | 1480 |
| LMArena WebDev | — | 1564 |
| SciCode | — | 58.9% |
Reasoning Step 5 Preview leads
Qwen3.5 Max Preview: 30.8 (#84), Step 5 Preview: 40.0 (#57)
| Benchmark | Qwen3.5 Max Preview | Step 5 Preview |
|---|---|---|
| LMArena Hard Prompts | 1483 | 1465 |
| CritPt | — | 20.9% |
Math Step 5 Preview leads
Qwen3.5 Max Preview: 40.1 (#94), Step 5 Preview: 46.1 (#72)
| Benchmark | Qwen3.5 Max Preview | Step 5 Preview |
|---|---|---|
| LMArena Math | 1474 | 1470 |
| ProofBench | — | 42% |
Knowledge Too close to call
Qwen3.5 Max Preview: 41.8 (#107), Step 5 Preview: 41.2 (#112)
| Benchmark | Qwen3.5 Max Preview | Step 5 Preview |
|---|---|---|
| LMArena Expert | 1489 | 1470 |
Multimodal Not comparable
Qwen3.5 Max Preview: —, Step 5 Preview: 41.0 (#41)
| Benchmark | Qwen3.5 Max Preview | Step 5 Preview |
|---|---|---|
| LMArena Vision | — | 1267 |
Multilingual Qwen3.5 Max Preview leads
Qwen3.5 Max Preview: 56.2 (#22), Step 5 Preview: 53.8 (#54)
| Benchmark | Qwen3.5 Max Preview | Step 5 Preview |
|---|---|---|
| LMArena Non-English | 1465 | 1432 |
| LMArena Chinese | 1534 | 1519 |
| LMArena Russian | 1471 | 1436 |
| LMArena Spanish | 1470 | 1439 |
| LMArena French | 1484 | — |
| LMArena German | 1487 | — |
| LMArena Japanese | 1495 | — |
| LMArena Korean | 1438 | — |
Instruction Following Qwen3.5 Max Preview leads
Qwen3.5 Max Preview: 77.0 (#31), Step 5 Preview: 76.0 (#50)
| Benchmark | Qwen3.5 Max Preview | Step 5 Preview |
|---|---|---|
| LMArena Instruction Following | 1467 | 1444 |
Long Context Too close to call
Qwen3.5 Max Preview: 45.2 (#45), Step 5 Preview: 44.5 (#64)
| Benchmark | Qwen3.5 Max Preview | Step 5 Preview |
|---|---|---|
| LMArena Longer Query | 1476 | 1455 |
Writing & Preference Qwen3.5 Max Preview leads
Qwen3.5 Max Preview: 66.0 (#41), Step 5 Preview: 62.8 (#71)
| Benchmark | Qwen3.5 Max Preview | Step 5 Preview |
|---|---|---|
| LMArena Text | 1470 | 1442 |
| LMArena Creative Writing | 1464 | 1410 |
| LMArena Multi-Turn | 1478 | 1447 |
Frequently asked questions
Is Qwen3.5 Max Preview better than Step 5 Preview?
Step 5 Preview is the stronger model overall, scoring 47.9 to 45.3 on the Noometry Index.
Is Qwen3.5 Max Preview or Step 5 Preview better for coding?
Step 5 Preview scores higher on coding benchmarks: 51.8 versus 44.0 in the Noometry coding category.
How many benchmarks do Qwen3.5 Max Preview and Step 5 Preview share?
13 benchmarks have published results for both models. Qwen3.5 Max Preview has 17 scored results on Noometry and Step 5 Preview has 18.