Model comparison
Hunyuan Vision 1.5 vs Step 5 Preview
Step 5 Preview is the stronger model overall, scoring 43.8 to 42.6 on the Noometry Index.
Last verified . 0 shared benchmarks.
Tencent
StepFunSummary
- The widest gap is in reasoning, where Step 5 Preview leads 38.0 to 27.8.
Side by side
| Hunyuan Vision 1.5 | Step 5 Preview | |
|---|---|---|
| Provider | Tencent | StepFun |
| Noometry Index | 42.6 | 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 | 9 | 3 |
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Category by category
Coding Step 5 Preview leads
Hunyuan Vision 1.5: 41.2 (#119), Step 5 Preview: 50.6 (#40)
| Benchmark | Hunyuan Vision 1.5 | Step 5 Preview |
|---|---|---|
| LMArena WebDev | — | 1569 |
| SciCode | — | 58.9% |
| LMArena Coding | 1419 | — |
Reasoning Step 5 Preview leads
Hunyuan Vision 1.5: 27.8 (#96), Step 5 Preview: 38.0 (#58)
| Benchmark | Hunyuan Vision 1.5 | Step 5 Preview |
|---|---|---|
| CritPt | — | 20.9% |
| LMArena Hard Prompts | 1417 | — |
Multimodal Not comparable
Hunyuan Vision 1.5: 35.1 (#78), Step 5 Preview: —
| Benchmark | Hunyuan Vision 1.5 | Step 5 Preview |
|---|---|---|
| LMArena Vision | 1180 | — |
Multilingual Not comparable
Hunyuan Vision 1.5: 50.5 (#118), Step 5 Preview: —
| Benchmark | Hunyuan Vision 1.5 | Step 5 Preview |
|---|---|---|
| LMArena Non-English | 1383 | — |
Instruction Following Not comparable
Hunyuan Vision 1.5: 73.9 (#110), Step 5 Preview: —
| Benchmark | Hunyuan Vision 1.5 | Step 5 Preview |
|---|---|---|
| LMArena Instruction Following | 1398 | — |
Long Context Not comparable
Hunyuan Vision 1.5: 42.9 (#110), Step 5 Preview: —
| Benchmark | Hunyuan Vision 1.5 | Step 5 Preview |
|---|---|---|
| LMArena Longer Query | 1405 | — |
Writing & Preference Not comparable
Hunyuan Vision 1.5: 60.4 (#95), Step 5 Preview: —
| Benchmark | Hunyuan Vision 1.5 | Step 5 Preview |
|---|---|---|
| LMArena Text | 1407 | — |
| LMArena Creative Writing | 1389 | — |
| LMArena Multi-Turn | 1423 | — |
Frequently asked questions
Is Hunyuan Vision 1.5 better than Step 5 Preview?
Step 5 Preview is the stronger model overall, scoring 43.8 to 42.6 on the Noometry Index.
Is Hunyuan Vision 1.5 or Step 5 Preview better for coding?
Step 5 Preview scores higher on coding benchmarks: 50.6 versus 41.2 in the Noometry coding category.
How many benchmarks do Hunyuan Vision 1.5 and Step 5 Preview share?
0 benchmarks have published results for both models. Hunyuan Vision 1.5 has 9 scored results on Noometry and Step 5 Preview has 3.