Model comparison
GLM-5.1 vs Nemotron 3.5 Lightning
GLM-5.1 is the stronger model overall, scoring 47.6 to 39.3 on the Noometry Index. Nemotron 3.5 Lightning costs 25× less per token, which makes it the better buy when GLM-5.1's lead doesn't matter for your workload.
Last verified . 18 shared benchmarks.
NVIDIASummary
- They share 18 benchmarks with published results for both. GLM-5.1 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 writing & preference, where GLM-5.1 leads 67.2 to 48.5.
- Nemotron 3.5 Lightning is cheaper at $0.06 / $0.16 per million input/output tokens, against $1.40 / $4.40 for GLM-5.1.
- Nemotron 3.5 Lightning accepts more context: 262K tokens versus 200K.
Side by side
| GLM-5.1 | Nemotron 3.5 Lightning | |
|---|---|---|
| Provider | Z.ai (Zhipu) | NVIDIA |
| Noometry Index | 47.6 | 39.3 |
| Released | 2026-04-07 | 2026-08-11 |
| Weights | Open | Open |
| Context window | 200K | 262K |
| Max output | 131K | 262K |
| Input $ / M tokens | $1.40 | $0.06 |
| Output $ / M tokens | $4.40 | $0.16 |
| Results tracked | 41 | 18 |
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Category by category
Coding GLM-5.1 leads
GLM-5.1: 48.5 (#52), Nemotron 3.5 Lightning: 39.6 (#143)
| Benchmark | GLM-5.1 | Nemotron 3.5 Lightning |
|---|---|---|
| LMArena Coding | 1486 | 1370 |
| SWE-bench Verified | 74.2% | — |
| LMArena WebDev | 1509 | — |
| SciCode | 43.8% | — |
| WeirdML | 57.1% | — |
| ALE-Bench | 887.1 | — |
Agentic & Tool Use Not comparable
GLM-5.1: 24.8 (#106), Nemotron 3.5 Lightning: —
| Benchmark | GLM-5.1 | Nemotron 3.5 Lightning |
|---|---|---|
| APEX-Agents | 40.9% | — |
| ExploitBench | 18.1% | — |
| GBAEval | 0% | — |
| Vending-Bench 2 | 5,634 | — |
Reasoning GLM-5.1 leads
GLM-5.1: 38.2 (#57), Nemotron 3.5 Lightning: 25.7 (#128)
| Benchmark | GLM-5.1 | Nemotron 3.5 Lightning |
|---|---|---|
| LMArena Hard Prompts | 1472 | 1335 |
| SimpleBench | 55.1% | — |
| NYT Connections (extended) | 77.7% | — |
| CritPt | 4.6% | — |
| Chess Puzzles | 19% | — |
| Thematic Generalization | 69.8% | — |
| Epoch Capabilities Index | 149.86 | — |
Math GLM-5.1 leads
GLM-5.1: 49.0 (#48), Nemotron 3.5 Lightning: 34.7 (#156)
| Benchmark | GLM-5.1 | Nemotron 3.5 Lightning |
|---|---|---|
| LMArena Math | 1472 | 1355 |
| FrontierMath (Tiers 1-3) | 36.8% | — |
| MathArena Final-Answer Competitions | 67.1% | — |
| OTIS Mock AIME 2024-2025 | 93.3% | — |
| ProofBench | 22.2% | — |
| FrontierMath (Feb 2025 set) | 33.4% | — |
| FrontierMath Tier 4 (v1) | 12.5% | — |
Knowledge GLM-5.1 leads
GLM-5.1: 55.0 (#45), Nemotron 3.5 Lightning: 36.9 (#154)
| Benchmark | GLM-5.1 | Nemotron 3.5 Lightning |
|---|---|---|
| LMArena Expert | 1477 | 1354 |
| GPQA Diamond | 89.9% | — |
| SimpleQA Verified | 34% | — |
Multilingual GLM-5.1 leads
GLM-5.1: 55.2 (#34), Nemotron 3.5 Lightning: 44.0 (#175)
| Benchmark | GLM-5.1 | Nemotron 3.5 Lightning |
|---|---|---|
| LMArena Non-English | 1448 | 1292 |
| LMArena Chinese | 1516 | 1356 |
| LMArena French | 1478 | 1369 |
| LMArena German | 1466 | 1280 |
| LMArena Japanese | 1436 | 1213 |
| LMArena Korean | 1423 | 1233 |
| LMArena Russian | 1453 | 1257 |
| LMArena Spanish | 1467 | 1321 |
Instruction Following GLM-5.1 leads
GLM-5.1: 76.5 (#41), Nemotron 3.5 Lightning: 69.8 (#166)
| Benchmark | GLM-5.1 | Nemotron 3.5 Lightning |
|---|---|---|
| LMArena Instruction Following | 1451 | 1317 |
Long Context GLM-5.1 leads
GLM-5.1: 44.9 (#51), Nemotron 3.5 Lightning: 39.9 (#160)
| Benchmark | GLM-5.1 | Nemotron 3.5 Lightning |
|---|---|---|
| LMArena Longer Query | 1467 | 1312 |
Writing & Preference GLM-5.1 leads
GLM-5.1: 67.2 (#29), Nemotron 3.5 Lightning: 48.5 (#198)
| Benchmark | GLM-5.1 | Nemotron 3.5 Lightning |
|---|---|---|
| LMArena Text | 1462 | 1324 |
| LMArena Creative Writing | 1454 | 1254 |
| EQ-Bench Creative Writing | 1592 | 1280 |
| LMArena Multi-Turn | 1473 | 1327 |
Frequently asked questions
Is GLM-5.1 better than Nemotron 3.5 Lightning?
GLM-5.1 is the stronger model overall, scoring 47.6 to 39.3 on the Noometry Index. Nemotron 3.5 Lightning costs 25× less per token, which makes it the better buy when GLM-5.1's lead doesn't matter for your workload.
Which is cheaper, GLM-5.1 or Nemotron 3.5 Lightning?
Nemotron 3.5 Lightning is cheaper. It lists at $0.06 per million input tokens and $0.16 per million output tokens; GLM-5.1 lists at $1.40 and $4.40.
Is GLM-5.1 or Nemotron 3.5 Lightning better for coding?
GLM-5.1 scores higher on coding benchmarks: 48.5 versus 39.6 in the Noometry coding category.
Which has the bigger context window?
Nemotron 3.5 Lightning does, with 262K tokens against 200K.
How many benchmarks do GLM-5.1 and Nemotron 3.5 Lightning share?
18 benchmarks have published results for both models. GLM-5.1 has 41 scored results on Noometry and Nemotron 3.5 Lightning has 18.