The Right-Sized LLM Benchmark Cheapest LLM that's good enough.

NVIDIA Nemotron-3 Ultra 550B at a glance

Good enough on 15/52 tasks at the 90% bar. Best value on 0 tasks. Best fit for: Long-form Content Generation, Relevance, Classification & Matching, Topic Organization & Clustering.

Provider
OpenRouter
Model name
nvidia/nemotron-3-ultra-550b-a55b
Cost mode:
Qualifies on
15 / 52 tasks (at 90% bar)
Best value on
0 tasks

Cost vs quality across all tasks

0%25%50%75%100%78910Quality score (7–10)Cost-efficiency vs best value (1.0 = best value)Topic Sequence Ordering — quality 8.09, 2.4x the cost of the best-value good-enough optionTheme Generation — quality 9.09, 4.0x the cost of the best-value good-enough optionActivity Feed Blurb Generation — quality 8.69, 17.8x the cost of the best-value good-enough optionSubstack Newsletter — quality 9.07, 17.3x the cost of the best-value good-enough optionInvestment Panel Voting — quality 8.19, 1.9x the cost of the best-value good-enough optionGeographic Region Identification — quality 8.60, 4.4x the cost of the best-value good-enough optionLanguage Detection — quality 9.98, 13.9x the cost of the best-value good-enough optionPublication Title Generation — quality 8.18, 6.4x the cost of the best-value good-enough optionLanding Page Section Generation — quality 9.26, 4.2x the cost of the best-value good-enough optionTopic Cluster Naming — quality 7.95, 4.2x the cost of the best-value good-enough optionEngagement Triage — quality 8.60, 33.6x the cost of the best-value good-enough optionPrompt Adaptation — quality 8.24, 5.2x the cost of the best-value good-enough optionOnboarding Chapter Outline Generation — quality 9.68, 6.9x the cost of the best-value good-enough optionAuthor Voice Generation — quality 8.91, 6.7x the cost of the best-value good-enough optionImage Prompt Generation — quality 8.53, 11.1x the cost of the best-value good-enough option

within ~1.3× of the best-value model · 1.3–2× · >2× · ★ this model is the best-value pick on that task. Top-right = best quadrant. Only tasks where this model qualifies at the 90% bar are plotted.

Per-task breakdown

TaskCategoryQuality (% of best)ConfidenceOverpay
Investment Panel VotingFinancial Analysis & Trading Decisions90%MEDIUM1.9x
Topic Sequence OrderingTopic Organization & Clustering90%MEDIUM2.4x
Theme GenerationLong-form Content Generation94%HIGH4x
Topic Cluster NamingTopic Organization & Clustering91%MEDIUM4.2x
Landing Page Section GenerationLong-form Content Generation94%RANKED4.2x
Geographic Region IdentificationStructured Data & Fact Extraction92%HIGH4.4x
Prompt AdaptationInfrastructure & Utility93%MEDIUM5.2x
Publication Title GenerationContent Summarization & Synthesis91%MEDIUM6.4x
Author Voice GenerationLong-form Content Generation92%MEDIUM6.7x
Onboarding Chapter Outline GenerationLong-form Content Generation99%RANKED6.9x
Image Prompt GenerationInfrastructure & Utility93%HIGH11x
Language DetectionRelevance, Classification & Matching99%RANKED14x
Substack NewsletterLong-form Content Generation98%RANKED17x
Activity Feed Blurb GenerationSocial & Promotional Content99%HIGH18x
Engagement TriageRelevance, Classification & Matching96%HIGH34x

Overpay — how much more you pay by running this model instead of the best-value model that clears the quality bar on that task (marked ★). "16x" means you overpay 16× — the same output for 16× the best-value good-enough option; ★ means this model is that option (no overpayment). Confidence — how sure we are about the quality score (more judgments + more agreement = higher confidence): RANKED many independent judges scored this model's outputs and their agreement is very high (most confident) — HIGH many judges have scored it and they mostly agree (well-pinned) — MEDIUM enough judges have weighed in to publish, but they disagree more than we'd like (treat with a small grain of salt). LOW-confidence cells are hidden everywhere on the site. See the methodology for the exact thresholds.