Model comparison
Llama 3.1 Nemotron Ultra 253b v1 vs Qwen3.5 27B
Qwen3.5 27B is the stronger model overall, scoring 41.9 to 36.7 on the Noometry Index.
Last verified . 10 shared benchmarks.
NVIDIA
Alibaba (Qwen)Summary
- They share 10 benchmarks with published results for both. Llama 3.1 Nemotron Ultra 253b v1 scores higher in 0 categories and Qwen3.5 27B in 7 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in multilingual, where Qwen3.5 27B leads 50.8 to 43.1.
Side by side
| Llama 3.1 Nemotron Ultra 253b v1 | Qwen3.5 27B | |
|---|---|---|
| Provider | NVIDIA | Alibaba (Qwen) |
| Noometry Index | 36.7 | 41.9 |
| Released | — | 2026-02-23 |
| Weights | Open | Open |
| Context window | — | 262K |
| Max output | — | 66K |
| Input $ / M tokens | — | $0.30 |
| Output $ / M tokens | — | $2.40 |
| Results tracked | 11 | 28 |
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Category by category
Coding Too close to call
Llama 3.1 Nemotron Ultra 253b v1: 38.4 (#177), Qwen3.5 27B: 38.9 (#168)
| Benchmark | Llama 3.1 Nemotron Ultra 253b v1 | Qwen3.5 27B |
|---|---|---|
| LMArena Coding | 1312 | 1427 |
| LMArena WebDev | — | 1358 |
| WeirdML | — | 39.5% |
| ALE-Bench | — | 349.45 |
Agentic & Tool Use Not comparable
Llama 3.1 Nemotron Ultra 253b v1: 15.7 (#149), Qwen3.5 27B: —
| Benchmark | Llama 3.1 Nemotron Ultra 253b v1 | Qwen3.5 27B |
|---|---|---|
| Berkeley Function Calling Leaderboard | 10% | — |
| Vending-Bench 2 | — | 201.98 |
Reasoning Qwen3.5 27B leads
Llama 3.1 Nemotron Ultra 253b v1: 26.3 (#134), Qwen3.5 27B: 27.5 (#117)
| Benchmark | Llama 3.1 Nemotron Ultra 253b v1 | Qwen3.5 27B |
|---|---|---|
| LMArena Hard Prompts | 1316 | 1414 |
| NYT Connections (extended) | — | 47.9% |
| Thematic Generalization | — | 45.5% |
| DTBench | — | 82.4% |
| LMCA | — | 34% |
Math Qwen3.5 27B leads
Llama 3.1 Nemotron Ultra 253b v1: 37.5 (#152), Qwen3.5 27B: 38.8 (#127)
| Benchmark | Llama 3.1 Nemotron Ultra 253b v1 | Qwen3.5 27B |
|---|---|---|
| LMArena Math | 1360 | 1429 |
| MathArena Final-Answer Competitions | — | 56.7% |
Knowledge Not comparable
Llama 3.1 Nemotron Ultra 253b v1: —, Qwen3.5 27B: 38.0 (#150)
| Benchmark | Llama 3.1 Nemotron Ultra 253b v1 | Qwen3.5 27B |
|---|---|---|
| Vectara Hallucination Rate | — | 12.1% |
| LMArena Expert | — | 1428 |
Multimodal Not comparable
Llama 3.1 Nemotron Ultra 253b v1: —, Qwen3.5 27B: 39.4 (#59)
| Benchmark | Llama 3.1 Nemotron Ultra 253b v1 | Qwen3.5 27B |
|---|---|---|
| LMArena Vision | — | 1241 |
Multilingual Qwen3.5 27B leads
Llama 3.1 Nemotron Ultra 253b v1: 43.1 (#187), Qwen3.5 27B: 50.8 (#115)
| Benchmark | Llama 3.1 Nemotron Ultra 253b v1 | Qwen3.5 27B |
|---|---|---|
| LMArena Non-English | 1282 | 1390 |
| LMArena Russian | 1284 | 1390 |
| LMArena Chinese | — | 1478 |
| LMArena French | — | 1410 |
| LMArena German | — | 1393 |
| LMArena Japanese | — | 1345 |
| LMArena Korean | — | 1358 |
| LMArena Spanish | — | 1407 |
Instruction Following Qwen3.5 27B leads
Llama 3.1 Nemotron Ultra 253b v1: 69.0 (#178), Qwen3.5 27B: 73.5 (#119)
| Benchmark | Llama 3.1 Nemotron Ultra 253b v1 | Qwen3.5 27B |
|---|---|---|
| LMArena Instruction Following | 1308 | 1393 |
Long Context Qwen3.5 27B leads
Llama 3.1 Nemotron Ultra 253b v1: 39.5 (#177), Qwen3.5 27B: 43.1 (#106)
| Benchmark | Llama 3.1 Nemotron Ultra 253b v1 | Qwen3.5 27B |
|---|---|---|
| LMArena Longer Query | 1299 | 1413 |
Writing & Preference Qwen3.5 27B leads
Llama 3.1 Nemotron Ultra 253b v1: 52.2 (#175), Qwen3.5 27B: 59.3 (#111)
| Benchmark | Llama 3.1 Nemotron Ultra 253b v1 | Qwen3.5 27B |
|---|---|---|
| LMArena Text | 1320 | 1409 |
| LMArena Creative Writing | 1314 | 1362 |
| LMArena Multi-Turn | 1317 | 1410 |
Frequently asked questions
Is Llama 3.1 Nemotron Ultra 253b v1 better than Qwen3.5 27B?
Qwen3.5 27B is the stronger model overall, scoring 41.9 to 36.7 on the Noometry Index.
Is Llama 3.1 Nemotron Ultra 253b v1 or Qwen3.5 27B better for coding?
They score almost the same on coding (38.4 vs 38.9); test both on your own repository before choosing.
How many benchmarks do Llama 3.1 Nemotron Ultra 253b v1 and Qwen3.5 27B share?
10 benchmarks have published results for both models. Llama 3.1 Nemotron Ultra 253b v1 has 11 scored results on Noometry and Qwen3.5 27B has 28.