Nemotron 3 Super 120B
NVIDIA · open weights · writing benchmark
The short version
Nemotron 3 Super 120B sits at #110 of 130 on ToneBench, toward the value end of the board, with a writing Elo of 858 and an overall score of 66.4 out of 100. We measured it by having it write all 9 of our real YouTube scripts, five times each, then scoring every draft blind against our own finished versions. Here is how it shook out.
Within NVIDIA it ranks 4th of 4. Nemotron 3 Ultra 550B is the family's top writer here, about 536 Elo ahead, so this config trades some quality for whatever it saves you in cost or speed.
Among open-weights models, it comes in 30th of 47. Open weights still trail the closed frontier on pure voice fidelity, and you can see that in the gap at the top.
Worth knowing before you rely on it: this model is swingy. Its overall score moves ± 9.5 points between runs of the same brief, versus a board median of ± 3.8. A great draft and a mediocre one can come from the identical prompt. The shaded bands on the metric bars below show where that volatility lives.
What it does best is Length Discipline: it ranks 101st on that dimension at 52.5, well below the board average. Its softer spot is Tone & Voice (68.2, 114th), which is the thing to watch if that metric matters most for your use.
It was uneven across the 9 scripts. Its best run was the product release announcement / personal observation (74.7) and its weakest was the opinion / warning explainer (53.6), a spread of about 21 points. Worth knowing if your writing skews toward one of those formats.
On cost, it runs about $0.003/task. Gemini 2.5 Flash-Lite scores higher for less money, at $0.002/task, so on pure value this config is not the frontier. Still, it beats 3 models that cost noticeably more.
Skill profile
The shape is the story: the further a corner reaches, the stronger that dimension. Biggest edge over the board: Substance & Value (-8.1); furthest behind: Length Discipline (-14.7).
Per-metric scores
Nine writing dimensions, each scored 0–100 and blended by the editorial weight shown. Rank is against all 130 current-ranked models. The thick bar is this model; the thin lines above and below are the current field's best model (darker) and average (lighter) on the same scale. The small ± number is its run-to-run variation.
Per-article scores
The same 9 real scripts every current-ranked model writes, scored individually. Different formats stress different skills.
Consistency: run-to-run variability
Every cell on this page is the mean of 5 independent runs per script; the ± numbers are the run-to-run standard deviation. Overall, Nemotron 3 Super 120B varies by ± 9.5 points between runs versus a board median of ± 3.8, so it is swingier than the typical model here, worth knowing if you need repeatable output.
Its most volatile dimension is Tone & Voice (± 5.8 vs a board median of ± 2.2): two runs of the same brief can land visibly different tone & voice scores.
| Metric | This model | Board median | Verdict |
|---|---|---|---|
| Tone & Voice ? | 68.2 ± 5.8 | ± 2.2 | swingier than most |
| Writing Craft ? | 68.7 ± 7.1 | ± 2.0 | swingier than most |
| Substance & Value ? | 70.6 ± 6.5 | ± 2.6 | swingier than most |
| Flow & Emotion ? | 63.2 ± 6.6 | ± 2.6 | swingier than most |
| YouTube Structure ? | 64.3 ± 6.2 | ± 3.6 | swingier than most |
| Hook ? | 71.2 ± 8.4 | ± 3.0 | swingier than most |
| Length Discipline ? | 52.5 ± 17.1 | ± 8.6 | swingier than most |
| Anti-Slop ? | 69.8 ± 4.4 | ± 2.6 | swingier than most |
| Visual Cues ? | 63.1 ± 11.1 | ± 4.7 | swingier than most |
Measured, not modeled
Numbers we log on every run and rarely talk about. None of these affect the writing scores; cost and latency are informational.
What each judge scored it
The published overall of 66.4 is the consensus of three family-disjoint judges scoring the same 45 stored drafts blind with the identical rubric. The highest and lowest judge differ by 16.3 points on its overall. That gap is wider than typical (board median 9.0): DeepSeek V4 Flash rates it noticeably higher than Claude Opus 5. Read the per-metric numbers knowing the consensus sits between two real opinions. How the panel works: methodology.
How we ran Nemotron 3 Super 120B
- Accessed viaOpenRouter · model page ↗
- Exact model / route id
nvidia/nemotron-3-super-120b-a12b(provider default reasoning) - Audited route overrideOpenRouter ·
nvidia/nemotron-3-super-120b-a12bforautomated_video_workflow(Task-7 exact OpenRouter endpoint pin nebius/fp4) - Generations5 independent runs × 9 scripts = 45 drafts, stored immutably after generation
- Run dates2026-07-29 → 2026-08-11
- Judges3-judge panel: Claude Opus 5, high effort (Anthropic) + DeepSeek V4 Flash (OpenRouter) + GPT-5.6 Sol, medium reasoning (Codex CLI): every draft scored independently by all three with the identical rubric, blind to model identity, evidence quotes required before each metric score; published score = per-metric consensus mean, verified with a Bradley-Terry refit (methodology)
- Samplingprovider-default sampling, no fine-tuning, no system-prompt changes; every current-ranked model gets the identical brief, style contract and research packet
- What stays privatethe exact rubric and any non-public reference material; source-publication timing is disclosed for exceptions (why)
Frequently asked questions
How good is Nemotron 3 Super 120B at writing?
On ToneBench it ranks #110 of 130 with a writing Elo of 858 and an overall score of 66.4/100. That score comes from writing our 9 real YouTube scripts five times each and scoring every draft blind against our own finished versions across nine writing dimensions.
Is Nemotron 3 Super 120B the best NVIDIA model for writing?
Not quite. Within NVIDIA it ranks 4th of 4; Nemotron 3 Ultra 550B is the family's best writer here.
Is Nemotron 3 Super 120B good value for the money?
It costs about $0.003/task. Gemini 2.5 Flash-Lite scores higher for less, so it is not the value pick.
What are Nemotron 3 Super 120B's strengths and weaknesses?
Its strongest dimension is Length Discipline (101st on the board, 52.5). Its weakest is Tone & Voice (114th on the board, 68.2). The full nine-metric breakdown is on this page.
Does Nemotron 3 Super 120B write some formats better than others?
Yes. Its best of our 9 scripts was the product release announcement / personal observation (74.7) and its weakest was the opinion / warning explainer (53.6).
How consistent is Nemotron 3 Super 120B between runs?
We run every script 5 times. Nemotron 3 Super 120B's overall score varies by about ±9.5 points between runs, versus a board median of ±3.8. That is swingier than typical, so expect more draft-to-draft variation. The full per-metric variability table is on this page.
How was Nemotron 3 Super 120B evaluated?
Via OpenRouter using the exact model/route id nvidia/nemotron-3-super-120b-a12b, run on 2026-07-29. 5 runs per script, provider-default sampling, no fine-tuning; every draft scored blind with a fixed rubric by a three-family judge panel. Full details in the 'How we ran it' section and the methodology.
Is Nemotron 3 Super 120B open source?
Yes, it is an open-weights model. Among open-weights models it ranks 30th of 47 for writing.