Model comparison
Nova 2.0 Pro Preview vs Step 3
Step 3 is the stronger model overall, scoring 40.5 to 33.4 on the Noometry Index.
Last verified . 0 shared benchmarks.
StepFunSummary
- The widest gap is in reasoning, where Step 3 leads 28.4 to 22.4.
- Step 3 has downloadable open weights; the other is API-only.
Side by side
| Nova 2.0 Pro Preview | Step 3 | |
|---|---|---|
| Provider | Amazon | StepFun |
| Noometry Index | 33.4 | 40.5 |
| Released | 2025-12-02 | — |
| Weights | Proprietary | Open |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 3 | 17 |
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Category by category
Coding Too close to call
Nova 2.0 Pro Preview: 40.8 (#133), Step 3: 40.1 (#147)
| Benchmark | Nova 2.0 Pro Preview | Step 3 |
|---|---|---|
| SciCode | 42.7% | — |
| LMArena Coding | — | 1367 |
Agentic & Tool Use Not comparable
Nova 2.0 Pro Preview: 21.9 (#136), Step 3: —
| Benchmark | Nova 2.0 Pro Preview | Step 3 |
|---|---|---|
| GDP.pdf | 2% | — |
Reasoning Step 3 leads
Nova 2.0 Pro Preview: 22.4 (#194), Step 3: 28.4 (#105)
| Benchmark | Nova 2.0 Pro Preview | Step 3 |
|---|---|---|
| Kagi LLM Benchmark | — | 62.3% |
| CritPt | 0% | — |
| LMArena Hard Prompts | — | 1355 |
Math Not comparable
Nova 2.0 Pro Preview: —, Step 3: 37.6 (#148)
| Benchmark | Nova 2.0 Pro Preview | Step 3 |
|---|---|---|
| LMArena Math | — | 1366 |
Knowledge Not comparable
Nova 2.0 Pro Preview: —, Step 3: 36.8 (#164)
| Benchmark | Nova 2.0 Pro Preview | Step 3 |
|---|---|---|
| LMArena Expert | — | 1333 |
Multimodal Not comparable
Nova 2.0 Pro Preview: —, Step 3: 35.5 (#86)
| Benchmark | Nova 2.0 Pro Preview | Step 3 |
|---|---|---|
| LMArena Vision | — | 1177 |
Multilingual Not comparable
Nova 2.0 Pro Preview: —, Step 3: 46.3 (#159)
| Benchmark | Nova 2.0 Pro Preview | Step 3 |
|---|---|---|
| LMArena Non-English | — | 1327 |
| LMArena Chinese | — | 1397 |
| LMArena German | — | 1371 |
| LMArena Korean | — | 1269 |
| LMArena Russian | — | 1331 |
| LMArena Spanish | — | 1371 |
Instruction Following Not comparable
Nova 2.0 Pro Preview: —, Step 3: 70.4 (#164)
| Benchmark | Nova 2.0 Pro Preview | Step 3 |
|---|---|---|
| LMArena Instruction Following | — | 1332 |
Long Context Not comparable
Nova 2.0 Pro Preview: —, Step 3: 40.3 (#157)
| Benchmark | Nova 2.0 Pro Preview | Step 3 |
|---|---|---|
| LMArena Longer Query | — | 1326 |
Writing & Preference Not comparable
Nova 2.0 Pro Preview: —, Step 3: 54.3 (#151)
| Benchmark | Nova 2.0 Pro Preview | Step 3 |
|---|---|---|
| LMArena Text | — | 1350 |
| LMArena Creative Writing | — | 1321 |
| LMArena Multi-Turn | — | 1341 |
Frequently asked questions
Is Nova 2.0 Pro Preview better than Step 3?
Step 3 is the stronger model overall, scoring 40.5 to 33.4 on the Noometry Index.
Is Nova 2.0 Pro Preview or Step 3 better for coding?
They score almost the same on coding (40.8 vs 40.1); test both on your own repository before choosing.
How many benchmarks do Nova 2.0 Pro Preview and Step 3 share?
0 benchmarks have published results for both models. Nova 2.0 Pro Preview has 3 scored results on Noometry and Step 3 has 17.