Model comparison
Claude Opus 4 vs Nemotron 3 Ultra
Claude Opus 4 and Nemotron 3 Ultra score almost the same on the Noometry Index (43.1 vs 42.5), so choose on price, context window or the category you care about most.
Last verified . 24 shared benchmarks.
NVIDIASummary
- They share 24 benchmarks with published results for both. Claude Opus 4 scores higher in 4 categories and Nemotron 3 Ultra in 5 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in agentic & tool use, where Claude Opus 4 leads 34.8 to 23.4.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 64.4% for Claude Opus 4 and 86.7% for Nemotron 3 Ultra.
- Nemotron 3 Ultra is cheaper at $0.50 / $2.20 per million input/output tokens, against $15 / $75 for Claude Opus 4.
- Nemotron 3 Ultra accepts more context: 262K tokens versus 200K.
- Nemotron 3 Ultra has downloadable open weights; the other is API-only.
Side by side
| Claude Opus 4 | Nemotron 3 Ultra | |
|---|---|---|
| Provider | Anthropic | NVIDIA |
| Noometry Index | 43.1 | 42.5 |
| Released | 2025-05-22 | 2026-06-04 |
| Weights | Proprietary | Open |
| Context window | 200K | 262K |
| Max output | 32K | 128K |
| Input $ / M tokens | $15 | $0.50 |
| Output $ / M tokens | $75 | $2.20 |
| Results tracked | 56 | 30 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Claude Opus 4 leads
Claude Opus 4: 47.2 (#62), Nemotron 3 Ultra: 38.1 (#182)
| Benchmark | Claude Opus 4 | Nemotron 3 Ultra |
|---|---|---|
| WeirdML | 43.7% | 43.5% |
| LMArena Coding | 1442 | 1468 |
| SWE-bench Verified | 70.7% | — |
| FrontierCode | — | 13.6% |
| SWE-bench Verified (bash only) | 67.6% | — |
| Aider Polyglot | 72% | — |
| SciCode | — | 40.3% |
| GSO | 6.9% | — |
| AlgoTune | 1.33 | — |
Agentic & Tool Use Claude Opus 4 leads
Claude Opus 4: 34.8 (#42), Nemotron 3 Ultra: 23.4 (#126)
| Benchmark | Claude Opus 4 | Nemotron 3 Ultra |
|---|---|---|
| APEX-Agents | — | 22.7% |
| Cybench | 38% | — |
| DeepResearch Bench | 46.8% | — |
| LMArena Search | 1127 | — |
| METR Time Horizons | 63.9% | — |
Reasoning Nemotron 3 Ultra leads
Claude Opus 4: 27.3 (#121), Nemotron 3 Ultra: 31.0 (#82)
| Benchmark | Claude Opus 4 | Nemotron 3 Ultra |
|---|---|---|
| CritPt | 0.3% | 3.1% |
| LMArena Hard Prompts | 1399 | 1452 |
| DTBench | 81.6% | 90.1% |
| LMCA | 37.4% | 36.9% |
| Epoch Capabilities Index | 142.67 | 146.17 |
| ARC-AGI-2 | 8.6% | — |
| SimpleBench | 58.8% | — |
| Kagi LLM Benchmark | 74.3% | — |
| ARC-AGI-1 | 35.7% | — |
| Chess Puzzles | — | 12% |
| EnigmaEval | 5.6% | — |
| Mystery Game Puzzles | — | 20% |
| ForecastBench | 61.1 | — |
Math Claude Opus 4 leads
Claude Opus 4: 42.0 (#86), Nemotron 3 Ultra: 35.3 (#187)
| Benchmark | Claude Opus 4 | Nemotron 3 Ultra |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 64.4% | 86.7% |
| LMArena Math | 1390 | 1457 |
| ProofBench | — | 2% |
| Omni-MATH | 61.6% | — |
| MATH Level 5 | 85% | — |
| FrontierMath (Feb 2025 set) | 4.5% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |
Knowledge Nemotron 3 Ultra leads
Claude Opus 4: 44.0 (#88), Nemotron 3 Ultra: 52.5 (#61)
| Benchmark | Claude Opus 4 | Nemotron 3 Ultra |
|---|---|---|
| GPQA Diamond | 76.3% | 85.4% |
| LMArena Expert | 1386 | 1472 |
| Humanity's Last Exam | 10.7% | — |
| MMLU-Pro | 87.5% | — |
| Confabulations | 15.9% | — |
| Vectara Hallucination Rate | 12% | — |
| GPQA (HELM) | 70.8% | — |
Multimodal Not comparable
Claude Opus 4: 31.5 (#106), Nemotron 3 Ultra: —
| Benchmark | Claude Opus 4 | Nemotron 3 Ultra |
|---|---|---|
| LMArena Vision | 1192 | — |
| GeoBench | 49% | — |
| VPCT | 38% | — |
Multilingual Nemotron 3 Ultra leads
Claude Opus 4: 48.8 (#138), Nemotron 3 Ultra: 53.5 (#64)
| Benchmark | Claude Opus 4 | Nemotron 3 Ultra |
|---|---|---|
| LMArena Non-English | 1362 | 1427 |
| LMArena Chinese | 1386 | 1497 |
| LMArena French | 1372 | 1472 |
| LMArena German | 1391 | 1471 |
| LMArena Korean | 1321 | 1386 |
| LMArena Russian | 1392 | 1417 |
| LMArena Spanish | 1389 | 1454 |
| LMArena Japanese | 1331 | — |
Instruction Following Claude Opus 4 leads
Claude Opus 4: 77.1 (#28), Nemotron 3 Ultra: 74.7 (#88)
| Benchmark | Claude Opus 4 | Nemotron 3 Ultra |
|---|---|---|
| LMArena Instruction Following | 1406 | 1418 |
| IFEval | 91.8% | — |
Long Context Nemotron 3 Ultra leads
Claude Opus 4: 39.6 (#172), Nemotron 3 Ultra: 43.9 (#81)
| Benchmark | Claude Opus 4 | Nemotron 3 Ultra |
|---|---|---|
| LMArena Longer Query | 1422 | 1437 |
| Fiction.LiveBench | 61.1% | — |
Writing & Preference Nemotron 3 Ultra leads
Claude Opus 4: 61.2 (#89), Nemotron 3 Ultra: 66.3 (#36)
| Benchmark | Claude Opus 4 | Nemotron 3 Ultra |
|---|---|---|
| LMArena Text | 1377 | 1445 |
| LMArena Creative Writing | 1387 | 1398 |
| EQ-Bench Creative Writing | 1580 | 1692 |
| LMArena Multi-Turn | 1396 | 1411 |
| Short-Story Creative Writing | 83.6% | — |
| WildBench | 85.2% | — |
Frequently asked questions
Is Claude Opus 4 better than Nemotron 3 Ultra?
Claude Opus 4 and Nemotron 3 Ultra score almost the same on the Noometry Index (43.1 vs 42.5), so choose on price, context window or the category you care about most.
Which is cheaper, Claude Opus 4 or Nemotron 3 Ultra?
Nemotron 3 Ultra is cheaper. It lists at $0.50 per million input tokens and $2.20 per million output tokens; Claude Opus 4 lists at $15 and $75.
Is Claude Opus 4 or Nemotron 3 Ultra better for coding?
Claude Opus 4 scores higher on coding benchmarks: 47.2 versus 38.1 in the Noometry coding category.
Which has the bigger context window?
Nemotron 3 Ultra does, with 262K tokens against 200K.
How many benchmarks do Claude Opus 4 and Nemotron 3 Ultra share?
24 benchmarks have published results for both models. Claude Opus 4 has 56 scored results on Noometry and Nemotron 3 Ultra has 30.