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ModelCap

Llama 3 1 Nemotron 51B Instruct

Current board #189Arena #283Official publisher releaseRestricted license

NVIDIA·nvidia/Llama-3_1-Nemotron-51B-Instruct

Llama 3 1 Nemotron 51B Instruct is ModelCap current-board rank #189 with Index 17.2 (Measured), from the ModelCap Index as of 17 Sept 2026, 07:03 UTC.

Llama 3 1 Nemotron 51B Instruct weight access is restricted license, from ModelCap classification of published repository metadata as of 17 Sept 2026, 07:03 UTC.

Snapshot facts · download the public dataset · methodology

ModelCap Index · Current board
17.2#189
Measured · 49% support · score interval 11.1–23.3
Evidence as of 13 Sept 2026, 00:00 UTC
Market Gravity
7.8
Secondary market signal

OpenRouter endpoint status could not be refreshed. This model is not treated as currently served until a successful observation arrives.

Input
Unlisted
no listed API price
Output
Unlisted
no listed API price
Context
tokens
Providers
0
endpoints
Gateway spend
latest · Vercel share

Providers

Uptime measured over the last 30 minutes

Current provider status is unavailable.

ModelCap Index · Current board

Methodology
17.2
Measured · 2 public benchmark observations across 2 boards
Current board
#189
Public rank basis
Measured (measured)
Index support
48.9% · moderate
Index interval
11.1–23.3
Rank posterior
Not available
Top 5 / Top 10 probability
Not available / Not available
Posterior as of
Snapshot timestamp unavailable
Evidence as of
13 Sept 2026, 00:00 UTC
Identity binding
Exact catalogue product · nvidia/nvidia/Llama-3_1-Nemotron-51B-Instruct · aggregates disclosed benchmark configurations · endpoint configuration not claimed · artifact metadata nvidia/Llama-3_1-Nemotron-51B-Instruct@f4d9431910e03eaffbe351ede20cdbb25d9765c2 (not the evaluation revision)
Index observations used
2
Qualified Index evidence point
17.2
Bayesian Evidence Score · measured evidence input only

BES normalizes admitted public benchmark evidence for measured Index rows. Its legacy score and observables prior do not define the public language rank.

Observed capability
17.2
Evidence status
confirmed · 73% mass
General preference
17.5
Coding
15.1
Agents & tools
Reasoning
Evidence breadth
92%
Evidence coverage
49%
Market and catalogue signals · secondary, never the language Index rank
Usage (OpenRouter popularity)
Liquidity (providers × uptime)
Open reach (HF downloads)
Surface (context / tools / modalities)
0.0
Freshness
6.3
  • · Catalogue surface
  • · First seen 2024-09-22

These adoption and deployment observations remain context only. They do not change this model's ModelCap Index score or rank.

BES evidence selected · measured input only

The bounded 0–100 capability score blends each source’s competitive placement with its published achievement, then combines capability families. Evidence breadth adds a modest uncertainty adjustment; price and popularity are not part of benchmark-led rank.

Deployment readiness

Metadata index
56.0
partial · 70% metadata coverage
Not capability
Artifact reproducibility
85.0
Access & legal clarity
92.5
Deployability
8.0
Evaluation provenance
48.2

Missing: artifactReproducibility.base-lineage, deployability.independent-provider-records, deployability.measured-provider-uptime, deployability.published-provider-pricing, deployability.declared-capacity, evaluationProvenance.evaluation-dataset-revisions.

A metadata completeness and deployability index—not a safety certification, quality grade, or production-readiness claim.

Market activity

Venue coverage
Market Gravity
7.8
OpenRouter weekly popularity
Not listed

Market Gravity uses OpenRouter’s full-catalogue popularity order. Sparse Vercel top-ten observations appear only when published and do not affect the score.

Arena preference

Status
Ranked
Source
LMArena
Official rank
#283 of 402
Rating
1286.3
95% confidence interval
1276–1296
Votes
4K
Source published at
13 Sept 2026, 00:00 UTC
Category
overall
Identity match confidence
100%

Market Gravity breakdown

Usage55%
0.0

OpenRouter weekly popularity across the full model catalogue.

Liquidity25%
0.0

Independent providers versus the model's open or closed cohort, weighted by uptime.

Open reach15%
50.0

Hugging Face 30-day downloads for open models; neutral for closed models.

Freshness5%
6.3

Time since first public availability, on a six-month half-life.

Specification

Context window
tokens
Max output
Inputs
Text
Outputs
Text
Tokenizer
Cached input tokens
Not offered
First seen on OpenRouter
22 Sept 2024

Capabilities

  • Not supported: Reasoning
  • Not supported: Tool use
  • Not supported: Structured output
  • Not supported: Response format
  • Not supported: Moderated

Weights & access

Restricted license. Downloadable weights use a model-specific or use-restricted license. Review the linked license before use, redistribution, or commercial deployment.

Access
Restricted license
Pinned revision
f4d9431910e0
Parameters
51.5B
Architecture
DeciLMForCausalLM
Model type
nemotron-nas
Hugging Face downloads (30d)
927
Downloads (all time)
997K
Likes
210
Repository updated
6 Jul 2025, 15:52 UTC

Compare Llama 3 1 Nemotron 51B Instruct with

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Benchmark leaderboards featuring Llama 3 1 Nemotron 51B Instruct

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Public benchmark boards on which Llama 3 1 Nemotron 51B Instruct has a published result
LeaderboardScoreSource rankConfigurationPublished
Arena coding leaderboardArena (LMArena)13121291–1334#286 of 397Default13 Sept 2026

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Ranked neighbours

Models within 3 places of #189 on the ModelCap Index.

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Llama 3 1 Nemotron 51B Instruct: common questions

How does Llama 3 1 Nemotron 51B Instruct rank among AI models?

Llama 3 1 Nemotron 51B Instruct holds ModelCap Index position #189 of 223 ranked language models as of 17 September 2026, with an Index score of 17.2 (interval 11.1–23.3); evidence: measured. The Index combines public benchmark boards with published uncertainty; the methodology page explains the weighting.

How much does Llama 3 1 Nemotron 51B Instruct cost per 1M tokens?

No live API price is listed for Llama 3 1 Nemotron 51B Instruct in the current snapshot as of 17 September 2026 because the latest endpoint refresh was unavailable. ModelCap shows a price only when a provider currently lists one.

Is Llama 3 1 Nemotron 51B Instruct open-weight?

Restricted license (nvidia-open-model-license). Downloadable weights use a model-specific or use-restricted license. Review the linked license before use, redistribution, or commercial deployment. The repository is nvidia/Llama-3_1-Nemotron-51B-Instruct on Hugging Face.

Which benchmarks has Llama 3 1 Nemotron 51B Instruct been evaluated on?

Llama 3 1 Nemotron 51B Instruct has published results on 1 public board tracked by ModelCap as of 17 September 2026: Arena coding 1312 (#286 of 397). Each board page ranks every tracked model on that benchmark; the ModelCap Index combines them with published uncertainty.

How does Llama 3 1 Nemotron 51B Instruct compare with Qwen2.5 Coder 32B Instruct?

Llama 3 1 Nemotron 51B Instruct ranks #189 (Index 17.2) and Qwen2.5 Coder 32B Instruct ranks #190 (Index 16.3) on the ModelCap Index as of 17 September 2026. The head-to-head page lines up their benchmarks, listed prices, context windows and provider counts side by side.

When was Llama 3 1 Nemotron 51B Instruct released?

Llama 3 1 Nemotron 51B Instruct first appeared in the catalogue on 22 Sept 2024. It is the current version in its family. Rank and price movements since then are recorded on the site's changes feed.