Model comparison
Claude 4 Sonnet vs Nemotron 3 Ultra
Head-to-head evidence from 14 shared benchmark results across 6 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Verified leaderboard positions: Claude 4 Sonnet unranked; Nemotron 3 Ultra #24
BenchAlign evidence: Claude 4 Sonnet supported; Nemotron 3 Ultra not scored. Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Claude 4 Sonnet and Nemotron 3 Ultra share 14 comparable benchmark results. 1 of 8 categories are comparable. 3 results are unique to Claude 4 Sonnet; 25 to Nemotron 3 Ultra.
Updated July 16, 2026- Shared results
- 14
- Claude 4 Sonnet only
- 3
- Nemotron 3 Ultra only
- 25
- Comparable categories
- 1 / 8
Pick Nemotron 3 Ultra if you want the stronger benchmark profile. Claude 4 Sonnet only becomes the better choice if coding is the priority or you would rather avoid the extra latency and token burn of a reasoning model.
Confidence note. This is a partial-evidence comparison with 14 shared benchmark results across 6 evidence categories; 1 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
Nemotron 3 Ultra is clearly ahead on the provisional aggregate, 60 to 48. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Claude 4 Sonnet is also the more expensive model on tokens at $3.00 input / $15.00 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for Nemotron 3 Ultra. That is roughly Infinityx on output cost alone. Nemotron 3 Ultra is the reasoning model in the pair, while Claude 4 Sonnet is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. Nemotron 3 Ultra gives you the larger context window at 1M, compared with 200K for Claude 4 Sonnet.
Category breakdown
Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.
| Category | Claude 4 Sonnet | Δ | Nemotron 3 Ultra |
|---|---|---|---|
| Coding | Claude 4 Sonnet72.7 | Margin← 14.4 | Nemotron 3 Ultra58.3 |
| Agentic | Claude 4 SonnetNot measured | MarginNo overlap | Nemotron 3 Ultra51.3 |
| Reasoning | Claude 4 SonnetNot measured | MarginNo overlap | Nemotron 3 Ultra61.9 |
| Knowledge | Claude 4 SonnetNot measured | MarginNo overlap | Nemotron 3 Ultra54.2 |
| Multilingual | Claude 4 SonnetNot measured | MarginNo overlap | Nemotron 3 Ultra83.0 |
| Inst. Following | Claude 4 SonnetNot measured | MarginNo overlap | Nemotron 3 Ultra81.7 |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
SWE-bench Verified
CodingA 72.7%B 71.9%Winner: Claude 4 SonnetΔ 0.8SWE-bench Verified: Claude 4 Sonnet scored 72.7%; Nemotron 3 Ultra scored 71.9%. Claude 4 Sonnet wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Claude 4 Sonnet | Nemotron 3 Ultra | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Claude 4 Sonnet$3 input / $15 output | Nemotron 3 Ultra$0 input / $0 output | Nemotron 3 Ultra has the lower combined listed price. |
| Generation speedtokens per second | Claude 4 Sonnet40 tok/s | Nemotron 3 UltraNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Claude 4 Sonnet1.33 s | Nemotron 3 UltraNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Claude 4 Sonnet200K | Nemotron 3 Ultra1M | Nemotron 3 Ultra lists the larger context window. |
Benchmark Deep Dive
Agentic14 benchmarks
| Benchmark | Claude 4 Sonnet | Nemotron 3 Ultra | Result |
|---|---|---|---|
| τ²-bench resultsSource | 52.3% | 83.3% | Nemotron 3 Ultra leads |
| Gert LabsSource | 39.66% | — | Not comparable |
| JobBenchSource | 18.4% | — | Not comparable |
| Terminal-Bench 2.0Source | — | 56.4% | Not comparable |
| PinchBenchSource | — | 90.0% | Not comparable |
| BrowseCompSource | — | 44.4% | Not comparable |
| τ³-bench resultsSource | — | 70.9% | Not comparable |
| GDPval-AASource | — | 33.2% | Not comparable |
| HLE w/ toolsSource | — | 37.4% | Not comparable |
| AA Agentic IndexSource | — | 27.4% | Not comparable |
| GDPval-AASource | — | 1164 | Not comparable |
| AA BriefcaseSource | — | 870 | Not comparable |
| AA EnterpriseOps-GymSource | — | 28.9% | Not comparable |
| AA Harvey LABSource | — | 3.3% | Not comparable |
CodingClaude 4 Sonnet wins8 benchmarks
| Benchmark | Claude 4 Sonnet | Nemotron 3 Ultra | Result |
|---|---|---|---|
| SWE-bench VerifiedSource | 72.7% | 71.9% | Claude 4 Sonnet leads |
| Terminal-Bench HardSource | 27.3% | 36.4% | Nemotron 3 Ultra leads |
| AA-SciCodeSource | 37.3% | 39.9% | Nemotron 3 Ultra leads |
| SWE MultilingualSource | — | 67.7% | Not comparable |
| LiveCodeBench v6Source | — | 89.0% | Not comparable |
| SciCodeSource | — | 44.6% | Not comparable |
| Terminal-Bench 2.0Source | — | 56.4% | Not comparable |
| AA Coding IndexSource | — | 49.3% | Not comparable |
Reasoning3 benchmarks
Knowledge12 benchmarks
| Benchmark | Claude 4 Sonnet | Nemotron 3 Ultra | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | 25.5% | 37.8% | Nemotron 3 Ultra leads |
| AA-GPQA DiamondSource | 68.3% | 86.7% | Nemotron 3 Ultra leads |
| AA-HLESource | 4.0% | 26.6% | Nemotron 3 Ultra leads |
| AA-Omniscience IndexSource | -9.2% | -0.8% | Nemotron 3 Ultra leads |
| AA-Omniscience AccuracySource | 22.4% | 21.6% | Claude 4 Sonnet leads |
| AA-Omniscience Hallucination RateSource | 40.8% | 28.5% | Nemotron 3 Ultra leads |
| GPQASource | — | 87% | Not comparable |
| GPQA-DSource | — | 87.0% | Not comparable |
| HLESource | — | 26.7% | Not comparable |
| HLE w/o toolsSource | — | 26.7% | Not comparable |
| MMLU-ProSource | — | 86.8% | Not comparable |
| AA Openness IndexSource | — | 83.3% | Not comparable |
Multilingual1 benchmarks
| Benchmark | Claude 4 Sonnet | Nemotron 3 Ultra | Result |
|---|---|---|---|
| MMLU-ProXSource | — | 83% | Not comparable |
Multimodal2 benchmarks
Frequently Asked Questions (2)
Which is better, Claude 4 Sonnet or Nemotron 3 Ultra?
Nemotron 3 Ultra is ahead on BenchLM's provisional leaderboard, 60 to 48. The biggest single separator in this matchup is SWE-bench Verified, where the scores are 72.7% and 71.9%.
Which is better for coding, Claude 4 Sonnet or Nemotron 3 Ultra?
Claude 4 Sonnet has the edge for coding in this comparison, averaging 72.7 versus 58.3. Inside this category, Terminal-Bench Hard is the benchmark that creates the most daylight between them.
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