Model comparison
Hunyuan Large 2025 02 10 vs Step 3.5 Flash
Step 3.5 Flash is the stronger model overall, scoring 42.3 to 38.6 on the Noometry Index.
Last verified . 12 shared benchmarks.
Tencent
StepFunSummary
- They share 12 benchmarks with published results for both. Hunyuan Large 2025 02 10 scores higher in 1 category and Step 3.5 Flash in 7 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Step 3.5 Flash leads 58.8 to 48.7.
- Step 3.5 Flash has downloadable open weights; the other is API-only.
Side by side
| Hunyuan Large 2025 02 10 | Step 3.5 Flash | |
|---|---|---|
| Provider | Tencent | StepFun |
| Noometry Index | 38.6 | 42.3 |
| Released | — | 2026-01-29 |
| Weights | Proprietary | Open |
| Context window | — | 256K |
| Max output | — | 256K |
| Input $ / M tokens | — | $0.10 |
| Output $ / M tokens | — | $0.30 |
| Results tracked | 12 | 19 |
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Category by category
Coding Step 3.5 Flash leads
Hunyuan Large 2025 02 10: 38.2 (#181), Step 3.5 Flash: 42.4 (#105)
| Benchmark | Hunyuan Large 2025 02 10 | Step 3.5 Flash |
|---|---|---|
| LMArena Coding | 1307 | 1436 |
Reasoning Hunyuan Large 2025 02 10 leads
Hunyuan Large 2025 02 10: 25.5 (#148), Step 3.5 Flash: 22.2 (#202)
| Benchmark | Hunyuan Large 2025 02 10 | Step 3.5 Flash |
|---|---|---|
| LMArena Hard Prompts | 1286 | 1411 |
| NYT Connections (extended) | — | 28.4% |
Math Step 3.5 Flash leads
Hunyuan Large 2025 02 10: 35.8 (#178), Step 3.5 Flash: 42.6 (#84)
| Benchmark | Hunyuan Large 2025 02 10 | Step 3.5 Flash |
|---|---|---|
| LMArena Math | 1281 | 1408 |
| MathArena Final-Answer Competitions | — | 66.8% |
Knowledge Step 3.5 Flash leads
Hunyuan Large 2025 02 10: 35.1 (#188), Step 3.5 Flash: 39.6 (#132)
| Benchmark | Hunyuan Large 2025 02 10 | Step 3.5 Flash |
|---|---|---|
| LMArena Expert | 1276 | 1421 |
Multilingual Step 3.5 Flash leads
Hunyuan Large 2025 02 10: 42.0 (#200), Step 3.5 Flash: 50.5 (#119)
| Benchmark | Hunyuan Large 2025 02 10 | Step 3.5 Flash |
|---|---|---|
| LMArena Non-English | 1265 | 1385 |
| LMArena Chinese | 1346 | 1447 |
| LMArena Russian | 1266 | 1385 |
| LMArena French | — | 1421 |
| LMArena German | — | 1405 |
| LMArena Japanese | — | 1354 |
| LMArena Korean | — | 1352 |
| LMArena Spanish | — | 1419 |
Instruction Following Step 3.5 Flash leads
Hunyuan Large 2025 02 10: 67.3 (#197), Step 3.5 Flash: 73.1 (#124)
| Benchmark | Hunyuan Large 2025 02 10 | Step 3.5 Flash |
|---|---|---|
| LMArena Instruction Following | 1277 | 1385 |
Long Context Step 3.5 Flash leads
Hunyuan Large 2025 02 10: 40.8 (#149), Step 3.5 Flash: 42.8 (#117)
| Benchmark | Hunyuan Large 2025 02 10 | Step 3.5 Flash |
|---|---|---|
| LMArena Longer Query | 1341 | 1402 |
Writing & Preference Step 3.5 Flash leads
Hunyuan Large 2025 02 10: 48.7 (#197), Step 3.5 Flash: 58.8 (#113)
| Benchmark | Hunyuan Large 2025 02 10 | Step 3.5 Flash |
|---|---|---|
| LMArena Text | 1288 | 1403 |
| LMArena Creative Writing | 1264 | 1357 |
| LMArena Multi-Turn | 1284 | 1405 |
Frequently asked questions
Is Hunyuan Large 2025 02 10 better than Step 3.5 Flash?
Step 3.5 Flash is the stronger model overall, scoring 42.3 to 38.6 on the Noometry Index.
Is Hunyuan Large 2025 02 10 or Step 3.5 Flash better for coding?
Step 3.5 Flash scores higher on coding benchmarks: 42.4 versus 38.2 in the Noometry coding category.
How many benchmarks do Hunyuan Large 2025 02 10 and Step 3.5 Flash share?
12 benchmarks have published results for both models. Hunyuan Large 2025 02 10 has 12 scored results on Noometry and Step 3.5 Flash has 19.