Model comparison
Gemini 3.8 Flash vs Nemotron 3.5 Lightning
Gemini 3.8 Flash is the stronger model overall, scoring 61.8 to 40.0 on the Noometry Index. Nemotron 3.5 Lightning costs 17× less per token, which makes it the better buy when Gemini 3.8 Flash's lead doesn't matter for your workload.
Last verified . 18 shared benchmarks.
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NVIDIASummary
- They share 18 benchmarks with published results for both. Gemini 3.8 Flash scores higher in 8 categories and Nemotron 3.5 Lightning in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 3.8 Flash leads 76.9 to 26.8.
- Nemotron 3.5 Lightning is cheaper at $0.05 / $0.20 per million input/output tokens, against $0.75 / $3.75 for Gemini 3.8 Flash.
- Gemini 3.8 Flash accepts more context: 1.05M tokens versus 262K.
- Nemotron 3.5 Lightning has downloadable open weights; the other is API-only.
Side by side
| Gemini 3.8 Flash | Nemotron 3.5 Lightning | |
|---|---|---|
| Provider | NVIDIA | |
| Noometry Index | 61.8 | 40.0 |
| Released | 2026-09-02 | 2026-08-11 |
| Weights | Proprietary | Open |
| Context window | 1.05M | 262K |
| Max output | 66K | 262K |
| Input $ / M tokens | $0.75 | $0.05 |
| Output $ / M tokens | $3.75 | $0.20 |
| Results tracked | 50 | 18 |
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Category by category
Coding Gemini 3.8 Flash leads
Gemini 3.8 Flash: 59.2 (#15), Nemotron 3.5 Lightning: 40.4 (#141)
| Benchmark | Gemini 3.8 Flash | Nemotron 3.5 Lightning |
|---|---|---|
| LMArena Coding | 1510 | 1375 |
| DeepSWE | 73.8% | — |
| FrontierCode | 41.2% | — |
| CursorBench | 39.6% | — |
| LMArena WebDev | 1584 | — |
| FrontierSWE | 19.6% | — |
| SciCode | 56.6% | — |
| WeirdML | 84.8% | — |
| ALE-Bench | 1,270 | — |
Agentic & Tool Use Not comparable
Gemini 3.8 Flash: 41.8 (#21), Nemotron 3.5 Lightning: —
| Benchmark | Gemini 3.8 Flash | Nemotron 3.5 Lightning |
|---|---|---|
| APEX-Agents | 64.3% | — |
| Remote Labor Index | 5.8% | — |
| GDP.pdf | 23.4% | — |
| Vending-Bench 2 | 5,094 | — |
Reasoning Gemini 3.8 Flash leads
Gemini 3.8 Flash: 76.9 (#5), Nemotron 3.5 Lightning: 26.8 (#127)
| Benchmark | Gemini 3.8 Flash | Nemotron 3.5 Lightning |
|---|---|---|
| LMArena Hard Prompts | 1508 | 1337 |
| ARC-AGI-2 | 89.2% | — |
| NYT Connections (extended) | 97.4% | — |
| ARC-AGI-1 | 98.5% | — |
| CritPt | 18.3% | — |
| Chess Puzzles | 61% | — |
| Mystery Game Puzzles | 47% | — |
| DTBench | 95.7% | — |
| LMCA | 52.9% | — |
| Surface Evolver Bench | 76.9% | — |
| Epoch Capabilities Index | 156.71 | — |
Math Gemini 3.8 Flash leads
Gemini 3.8 Flash: 65.3 (#28), Nemotron 3.5 Lightning: 37.5 (#155)
| Benchmark | Gemini 3.8 Flash | Nemotron 3.5 Lightning |
|---|---|---|
| LMArena Math | 1528 | 1359 |
| FrontierMath (Tiers 1-3) | 68.4% | — |
| FrontierMath Tier 4 | 22% | — |
| OTIS Mock AIME 2024-2025 | 98.9% | — |
| ProofBench | 48% | — |
Knowledge Gemini 3.8 Flash leads
Gemini 3.8 Flash: 74.8 (#2), Nemotron 3.5 Lightning: 37.5 (#154)
| Benchmark | Gemini 3.8 Flash | Nemotron 3.5 Lightning |
|---|---|---|
| LMArena Expert | 1524 | 1356 |
| GPQA Diamond | 95.4% | — |
| Humanity's Last Exam | 44.5% | — |
| SimpleQA Verified | 69.7% | — |
Multimodal Not comparable
Gemini 3.8 Flash: 40.7 (#45), Nemotron 3.5 Lightning: —
| Benchmark | Gemini 3.8 Flash | Nemotron 3.5 Lightning |
|---|---|---|
| LMArena Vision | 1314 | — |
| Blueprint-Bench 2 | 38.6% | — |
| Furniture Assembly | 31.7% | — |
Multilingual Gemini 3.8 Flash leads
Gemini 3.8 Flash: 58.0 (#5), Nemotron 3.5 Lightning: 44.0 (#180)
| Benchmark | Gemini 3.8 Flash | Nemotron 3.5 Lightning |
|---|---|---|
| LMArena Non-English | 1491 | 1295 |
| LMArena Chinese | 1554 | 1359 |
| LMArena French | 1498 | 1366 |
| LMArena German | 1493 | 1282 |
| LMArena Japanese | 1502 | 1206 |
| LMArena Korean | 1459 | 1238 |
| LMArena Russian | 1515 | 1253 |
| LMArena Spanish | 1485 | 1345 |
Instruction Following Gemini 3.8 Flash leads
Gemini 3.8 Flash: 78.0 (#13), Nemotron 3.5 Lightning: 69.6 (#170)
| Benchmark | Gemini 3.8 Flash | Nemotron 3.5 Lightning |
|---|---|---|
| LMArena Instruction Following | 1490 | 1318 |
Long Context Gemini 3.8 Flash leads
Gemini 3.8 Flash: 46.3 (#24), Nemotron 3.5 Lightning: 39.9 (#165)
| Benchmark | Gemini 3.8 Flash | Nemotron 3.5 Lightning |
|---|---|---|
| LMArena Longer Query | 1508 | 1314 |
Writing & Preference Gemini 3.8 Flash leads
Gemini 3.8 Flash: 72.2 (#15), Nemotron 3.5 Lightning: 48.5 (#201)
| Benchmark | Gemini 3.8 Flash | Nemotron 3.5 Lightning |
|---|---|---|
| LMArena Text | 1499 | 1327 |
| LMArena Creative Writing | 1492 | 1254 |
| EQ-Bench Creative Writing | 1748 | 1280 |
| LMArena Multi-Turn | 1501 | 1328 |
Frequently asked questions
Is Gemini 3.8 Flash better than Nemotron 3.5 Lightning?
Gemini 3.8 Flash is the stronger model overall, scoring 61.8 to 40.0 on the Noometry Index. Nemotron 3.5 Lightning costs 17× less per token, which makes it the better buy when Gemini 3.8 Flash's lead doesn't matter for your workload.
Which is cheaper, Gemini 3.8 Flash or Nemotron 3.5 Lightning?
Nemotron 3.5 Lightning is cheaper. It lists at $0.05 per million input tokens and $0.20 per million output tokens; Gemini 3.8 Flash lists at $0.75 and $3.75.
Is Gemini 3.8 Flash or Nemotron 3.5 Lightning better for coding?
Gemini 3.8 Flash scores higher on coding benchmarks: 59.2 versus 40.4 in the Noometry coding category.
Which has the bigger context window?
Gemini 3.8 Flash does, with 1.05M tokens against 262K.
How many benchmarks do Gemini 3.8 Flash and Nemotron 3.5 Lightning share?
18 benchmarks have published results for both models. Gemini 3.8 Flash has 50 scored results on Noometry and Nemotron 3.5 Lightning has 18.