Model comparison
Qwen3.5 122B-A10B vs Step 3.5 Flash
Qwen3.5 122B-A10B and Step 3.5 Flash score almost the same on the Noometry Index (42.1 vs 42.3), so choose on price, context window or the category you care about most.
Last verified . 18 shared benchmarks.
Alibaba (Qwen)
StepFunSummary
- They share 18 benchmarks with published results for both. Qwen3.5 122B-A10B scores higher in 5 categories and Step 3.5 Flash in 3 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Qwen3.5 122B-A10B leads 27.2 to 22.2.
- The biggest single-benchmark swing is NYT Connections (extended): 51.7% for Qwen3.5 122B-A10B and 28.4% for Step 3.5 Flash.
- Step 3.5 Flash is cheaper at $0.10 / $0.30 per million input/output tokens, against $0.40 / $3.20 for Qwen3.5 122B-A10B.
- Qwen3.5 122B-A10B accepts more context: 262K tokens versus 256K.
Side by side
| Qwen3.5 122B-A10B | Step 3.5 Flash | |
|---|---|---|
| Provider | Alibaba (Qwen) | StepFun |
| Noometry Index | 42.1 | 42.3 |
| Released | 2026-02-23 | 2026-01-29 |
| Weights | Open | Open |
| Context window | 262K | 256K |
| Max output | 66K | 256K |
| Input $ / M tokens | $0.40 | $0.10 |
| Output $ / M tokens | $3.20 | $0.30 |
| Results tracked | 27 | 19 |
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Category by category
Coding Step 3.5 Flash leads
Qwen3.5 122B-A10B: 39.1 (#162), Step 3.5 Flash: 42.4 (#105)
| Benchmark | Qwen3.5 122B-A10B | Step 3.5 Flash |
|---|---|---|
| LMArena Coding | 1436 | 1436 |
| LMArena WebDev | 1360 | — |
| SciCode | 35.6% | — |
Reasoning Qwen3.5 122B-A10B leads
Qwen3.5 122B-A10B: 27.2 (#123), Step 3.5 Flash: 22.2 (#202)
| Benchmark | Qwen3.5 122B-A10B | Step 3.5 Flash |
|---|---|---|
| NYT Connections (extended) | 51.7% | 28.4% |
| LMArena Hard Prompts | 1421 | 1411 |
| CritPt | 0.9% | — |
| Thematic Generalization | 51.2% | — |
| Mystery Game Puzzles | 17% | — |
| DTBench | 84.3% | — |
| LMCA | 32.2% | — |
Math Step 3.5 Flash leads
Qwen3.5 122B-A10B: 39.1 (#112), Step 3.5 Flash: 42.6 (#84)
| Benchmark | Qwen3.5 122B-A10B | Step 3.5 Flash |
|---|---|---|
| LMArena Math | 1432 | 1408 |
| MathArena Final-Answer Competitions | — | 66.8% |
Knowledge Too close to call
Qwen3.5 122B-A10B: 38.8 (#142), Step 3.5 Flash: 39.6 (#132)
| Benchmark | Qwen3.5 122B-A10B | Step 3.5 Flash |
|---|---|---|
| LMArena Expert | 1432 | 1421 |
| Vectara Hallucination Rate | 11.2% | — |
Multimodal Not comparable
Qwen3.5 122B-A10B: 39.6 (#57), Step 3.5 Flash: —
| Benchmark | Qwen3.5 122B-A10B | Step 3.5 Flash |
|---|---|---|
| LMArena Vision | 1245 | — |
Multilingual Qwen3.5 122B-A10B leads
Qwen3.5 122B-A10B: 51.6 (#107), Step 3.5 Flash: 50.5 (#119)
| Benchmark | Qwen3.5 122B-A10B | Step 3.5 Flash |
|---|---|---|
| LMArena Non-English | 1400 | 1385 |
| LMArena Chinese | 1462 | 1447 |
| LMArena French | 1442 | 1421 |
| LMArena German | 1426 | 1405 |
| LMArena Japanese | 1367 | 1354 |
| LMArena Korean | 1352 | 1352 |
| LMArena Russian | 1400 | 1385 |
| LMArena Spanish | 1424 | 1419 |
Instruction Following Too close to call
Qwen3.5 122B-A10B: 73.8 (#115), Step 3.5 Flash: 73.1 (#124)
| Benchmark | Qwen3.5 122B-A10B | Step 3.5 Flash |
|---|---|---|
| LMArena Instruction Following | 1399 | 1385 |
Long Context Too close to call
Qwen3.5 122B-A10B: 43.0 (#109), Step 3.5 Flash: 42.8 (#117)
| Benchmark | Qwen3.5 122B-A10B | Step 3.5 Flash |
|---|---|---|
| LMArena Longer Query | 1410 | 1402 |
Writing & Preference Qwen3.5 122B-A10B leads
Qwen3.5 122B-A10B: 60.0 (#105), Step 3.5 Flash: 58.8 (#113)
| Benchmark | Qwen3.5 122B-A10B | Step 3.5 Flash |
|---|---|---|
| LMArena Text | 1417 | 1403 |
| LMArena Creative Writing | 1368 | 1357 |
| LMArena Multi-Turn | 1416 | 1405 |
Frequently asked questions
Is Qwen3.5 122B-A10B better than Step 3.5 Flash?
Qwen3.5 122B-A10B and Step 3.5 Flash score almost the same on the Noometry Index (42.1 vs 42.3), so choose on price, context window or the category you care about most.
Which is cheaper, Qwen3.5 122B-A10B or Step 3.5 Flash?
Step 3.5 Flash is cheaper. It lists at $0.10 per million input tokens and $0.30 per million output tokens; Qwen3.5 122B-A10B lists at $0.40 and $3.20.
Is Qwen3.5 122B-A10B or Step 3.5 Flash better for coding?
Step 3.5 Flash scores higher on coding benchmarks: 42.4 versus 39.1 in the Noometry coding category.
Which has the bigger context window?
Qwen3.5 122B-A10B does, with 262K tokens against 256K.
How many benchmarks do Qwen3.5 122B-A10B and Step 3.5 Flash share?
18 benchmarks have published results for both models. Qwen3.5 122B-A10B has 27 scored results on Noometry and Step 3.5 Flash has 19.