Skip to content
ModelCap

Head-to-head comparison

Llama 3.1 Nemotron Safety Guard 8B v3 vs Llama 3 1 Nemotron Ultra 253B v1

Llama 3.1 Nemotron Safety Guard 8B v3 (NVIDIA) and Llama 3 1 Nemotron Ultra 253B v1 (NVIDIA) compared on the ModelCap Index, API price, context window, provider availability, weight access and every public benchmark board they share. Figures are the same ones shown on the live rankings; nothing here is a hidden score.

Snapshot as of 15 September 2026

As of 15 September 2026, Llama 3 1 Nemotron Ultra 253B v1 holds the stronger ModelCap Index position (#128 vs #195).

Which should you choose?

Choose Llama 3.1 Nemotron Safety Guard 8B v3 if…

  • you want the more recently listed model — Llama 3.1 Nemotron Safety Guard 8B v3 was listed 20 August 2025, Llama 3 1 Nemotron Ultra 253B v1 7 April 2025.

Choose Llama 3 1 Nemotron Ultra 253B v1 if…

  • you want the stronger overall ModelCap Index position — #128 against #195 (34.0 vs 6.3 points).

Llama 3.1 Nemotron Safety Guard 8B v3 vs Llama 3 1 Nemotron Ultra 253B v1: specs, pricing and context

Specification comparison of Llama 3.1 Nemotron Safety Guard 8B v3 and Llama 3 1 Nemotron Ultra 253B v1
FieldLlama 3.1 Nemotron Safety Guard 8B v3NVIDIALlama 3 1 Nemotron Ultra 253B v1NVIDIA
ModelCap Index position#195#128
Index score6.334.0
EvidenceInheritedMeasured
Input price / 1M tokensUnlistedUnlisted
Output price / 1M tokensUnlistedUnlisted
Context window— tokens— tokens
Max output tokens——
API providers listed00
Weight accessRestricted licenseRestricted license
Input modalitiesTextText
First listed20 August 20257 April 2025
PublisherNVIDIANVIDIA

Evidence: finetune of meta-llama/llama-3.1-8b-instruct · finetune (100%) · 1 public benchmark observation across 1 board. Prices are the lowest listed API offer per million tokens observed on the OpenRouter catalogue.

Benchmark scores: Llama 3.1 Nemotron Safety Guard 8B v3 vs Llama 3 1 Nemotron Ultra 253B v1

Public benchmark boards where Llama 3.1 Nemotron Safety Guard 8B v3 or Llama 3 1 Nemotron Ultra 253B v1 has a published result
BoardLlama 3.1 Nemotron Safety Guard 8B v3Llama 3 1 Nemotron Ultra 253B v1Leads
BFCL V4UC Berkeley (Gorilla)—10.0Function callingOnly one result

Scores are the sources' own published figures for each model's best evaluated configuration; ModelCap never re-runs a benchmark.

Want a different pairing? Open the interactive comparison tool to swap either model for any current ranked language model.

Llama 3.1 Nemotron Safety Guard 8B v3 vs Llama 3 1 Nemotron Ultra 253B v1: common questions

Is Llama 3.1 Nemotron Safety Guard 8B v3 better than Llama 3 1 Nemotron Ultra 253B v1?

Llama 3 1 Nemotron Ultra 253B v1 ranks higher on the ModelCap Index as of 15 September 2026: #128 against #195. That is a capability ranking built from public benchmark evidence with published uncertainty; whether it is "better" for you also depends on price, context and where you can run it. Their published uncertainty intervals do not overlap, but the aggregate Index does not predict performance on every task; compare the relevant benchmark configurations before choosing.

Is Llama 3.1 Nemotron Safety Guard 8B v3 cheaper than Llama 3 1 Nemotron Ultra 253B v1?

At least one of the two has no listed API price on ModelCap right now, so no price comparison is made.

Which has the bigger context window, Llama 3.1 Nemotron Safety Guard 8B v3 or Llama 3 1 Nemotron Ultra 253B v1?

Both publish a —-token context window.

Which is better for coding, Llama 3.1 Nemotron Safety Guard 8B v3 or Llama 3 1 Nemotron Ultra 253B v1?

The two models do not share a coding benchmark board on ModelCap yet, so no head-to-head coding score is published; the ModelCap Index position is the closest overall signal.

Are Llama 3.1 Nemotron Safety Guard 8B v3 and Llama 3 1 Nemotron Ultra 253B v1 open-weight models?

Llama 3.1 Nemotron Safety Guard 8B v3: Restricted license. Llama 3 1 Nemotron Ultra 253B v1: Restricted license. Open weights mean the checkpoint can be downloaded and self-hosted under its licence; API-only models are available solely through hosted endpoints.

Where can I run Llama 3.1 Nemotron Safety Guard 8B v3 and Llama 3 1 Nemotron Ultra 253B v1?

ModelCap currently lists 0 API providers for Llama 3.1 Nemotron Safety Guard 8B v3 and 0 for Llama 3 1 Nemotron Ultra 253B v1, from the OpenRouter catalogue snapshot the site serves; each model page lists the providers and their prices.

How current is this Llama 3.1 Nemotron Safety Guard 8B v3 vs Llama 3 1 Nemotron Ultra 253B v1 comparison?

Every figure comes from the sealed ModelCap dataset published 15 September 2026; the page re-renders within a minute of each data refresh, and the ModelCap Index positions are the same ones shown on the live rankings.

Explore further