Model comparison
Nemotron 3.5 Lightning vs Step 3.7 Flash
Nemotron 3.5 Lightning is the stronger model overall, scoring 40.0 to 37.3 on the Noometry Index.
Last verified . 0 shared benchmarks.
NVIDIA
StepFunSummary
- The widest gap is in math, where Step 3.7 Flash leads 42.9 to 37.5.
- Nemotron 3.5 Lightning is cheaper at $0.05 / $0.20 per million input/output tokens, against $0.18 / $1.11 for Step 3.7 Flash.
- Nemotron 3.5 Lightning accepts more context: 262K tokens versus 256K.
Side by side
| Nemotron 3.5 Lightning | Step 3.7 Flash | |
|---|---|---|
| Provider | NVIDIA | StepFun |
| Noometry Index | 40.0 | 37.3 |
| Released | 2026-08-11 | 2026-05-29 |
| Weights | Open | Open |
| Context window | 262K | 256K |
| Max output | 262K | 256K |
| Input $ / M tokens | $0.05 | $0.18 |
| Output $ / M tokens | $0.20 | $1.11 |
| Results tracked | 18 | 5 |
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Category by category
Coding Too close to call
Nemotron 3.5 Lightning: 40.4 (#141), Step 3.7 Flash: 40.0 (#150)
| Benchmark | Nemotron 3.5 Lightning | Step 3.7 Flash |
|---|---|---|
| SciCode | — | 40% |
| LMArena Coding | 1375 | — |
| ALE-Bench | — | 694.12 |
Reasoning Nemotron 3.5 Lightning leads
Nemotron 3.5 Lightning: 26.8 (#127), Step 3.7 Flash: 21.6 (#219)
| Benchmark | Nemotron 3.5 Lightning | Step 3.7 Flash |
|---|---|---|
| NYT Connections (extended) | — | 39.7% |
| CritPt | — | 2.3% |
| LMArena Hard Prompts | 1337 | — |
Math Step 3.7 Flash leads
Nemotron 3.5 Lightning: 37.5 (#155), Step 3.7 Flash: 42.9 (#82)
| Benchmark | Nemotron 3.5 Lightning | Step 3.7 Flash |
|---|---|---|
| MathArena Final-Answer Competitions | — | 68.5% |
| LMArena Math | 1359 | — |
Knowledge Not comparable
Nemotron 3.5 Lightning: 37.5 (#154), Step 3.7 Flash: —
| Benchmark | Nemotron 3.5 Lightning | Step 3.7 Flash |
|---|---|---|
| LMArena Expert | 1356 | — |
Multilingual Not comparable
Nemotron 3.5 Lightning: 44.0 (#180), Step 3.7 Flash: —
| Benchmark | Nemotron 3.5 Lightning | Step 3.7 Flash |
|---|---|---|
| LMArena Non-English | 1295 | — |
| LMArena Chinese | 1359 | — |
| LMArena French | 1366 | — |
| LMArena German | 1282 | — |
| LMArena Japanese | 1206 | — |
| LMArena Korean | 1238 | — |
| LMArena Russian | 1253 | — |
| LMArena Spanish | 1345 | — |
Instruction Following Not comparable
Nemotron 3.5 Lightning: 69.6 (#170), Step 3.7 Flash: —
| Benchmark | Nemotron 3.5 Lightning | Step 3.7 Flash |
|---|---|---|
| LMArena Instruction Following | 1318 | — |
Long Context Not comparable
Nemotron 3.5 Lightning: 39.9 (#165), Step 3.7 Flash: —
| Benchmark | Nemotron 3.5 Lightning | Step 3.7 Flash |
|---|---|---|
| LMArena Longer Query | 1314 | — |
Writing & Preference Not comparable
Nemotron 3.5 Lightning: 48.5 (#201), Step 3.7 Flash: —
| Benchmark | Nemotron 3.5 Lightning | Step 3.7 Flash |
|---|---|---|
| LMArena Text | 1327 | — |
| LMArena Creative Writing | 1254 | — |
| EQ-Bench Creative Writing | 1280 | — |
| LMArena Multi-Turn | 1328 | — |
Frequently asked questions
Is Nemotron 3.5 Lightning better than Step 3.7 Flash?
Nemotron 3.5 Lightning is the stronger model overall, scoring 40.0 to 37.3 on the Noometry Index.
Which is cheaper, Nemotron 3.5 Lightning or Step 3.7 Flash?
Nemotron 3.5 Lightning is cheaper. It lists at $0.05 per million input tokens and $0.20 per million output tokens; Step 3.7 Flash lists at $0.18 and $1.11.
Is Nemotron 3.5 Lightning or Step 3.7 Flash better for coding?
They score almost the same on coding (40.4 vs 40.0); test both on your own repository before choosing.
Which has the bigger context window?
Nemotron 3.5 Lightning does, with 262K tokens against 256K.
How many benchmarks do Nemotron 3.5 Lightning and Step 3.7 Flash share?
0 benchmarks have published results for both models. Nemotron 3.5 Lightning has 18 scored results on Noometry and Step 3.7 Flash has 5.