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Llama 3.1 Nemotron Ultra 253B v1 vs Nemotron Labs Dory 1.0 (4B)

Llama 3.1 Nemotron Ultra 253B v1 and Nemotron Labs Dory 1.0 (4B) are closely matched at 18.7 and 21.8 on the LLM Stats Score.

NVIDIA · NVIDIA · Updated for 2026

Which is better?

Llama 3.1 Nemotron Ultra 253B v1 and Nemotron Labs Dory 1.0 (4B) are closely matched on the overall LLM Stats Score at 18.7 and 21.8.

In the 1 individual benchmarks reported for both models, Llama 3.1 Nemotron Ultra 253B v1 wins 1; this is a narrower head-to-head signal than the composite indexes.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Llama 3.1 Nemotron Ultra 253B v1

  • your work emphasizes coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 1 of 1 exact shared results

Choose Nemotron Labs Dory 1.0 (4B)

  • you want the most recent training data — it shipped Oct 2026

At a glance

The differences that matter most.

Llama 3.1 Nemotron Ultra 253B v1
NVIDIA
Nemotron Labs Dory 1.0 (4B)
NVIDIA
Core performance indexes
LLM Stats Score
18.7
#232
21.8
#203
Reasoning
18.4
#230
19.6
#216
Coding
12.2
#166
2.8
#244
Cost, coverage & limits
Benchmark wins
1 of 1
0 of 1
Input price
— / M
— / M
Output price
— / M
— / M
Context window
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Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Llama 3.1 Nemotron Ultra 253B v1
Nemotron Labs Dory 1.0 (4B)
Math
15.5#227
12.1#246
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

6 reported for Llama 3.1 Nemotron Ultra 253B v1 · 10 for Nemotron Labs Dory 1.0 (4B)

1 shared

Llama 3.1 Nemotron Ultra 253B v1 outperforms in 1 benchmarks (GPQA), while Nemotron Labs Dory 1.0 (4B) is better at 0 benchmarks.

Llama 3.1 Nemotron Ultra 253B v1 significantly outperforms across most benchmarks.

Thu Oct 22 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Model Size

Parameter count comparison

249.0B diff

Llama 3.1 Nemotron Ultra 253B v1 has 249.0B more parameters than Nemotron Labs Dory 1.0 (4B), making it 6225.0% larger.

NVIDIA
Llama 3.1 Nemotron Ultra 253B v1
253.0Bparameters
NVIDIA
Nemotron Labs Dory 1.0 (4B)
4.0Bparameters
253.0B
Llama 3.1 Nemotron Ultra 253B v1
4.0B
Nemotron Labs Dory 1.0 (4B)

License

Usage and distribution terms

Llama 3.1 Nemotron Ultra 253B v1 is licensed under Llama 3.1 Community License, while Nemotron Labs Dory 1.0 (4B) uses OpenMDW License v1.1.

License differences may affect how you can use these models in commercial or open-source projects.

Llama 3.1 Nemotron Ultra 253B v1

Llama 3.1 Community License

Open weights

Nemotron Labs Dory 1.0 (4B)

OpenMDW License v1.1

Open weights

Release Timeline

When each model was launched

Llama 3.1 Nemotron Ultra 253B v1 was released on 2025-04-07, while Nemotron Labs Dory 1.0 (4B) was released on 2026-10-16.

Nemotron Labs Dory 1.0 (4B) is 19 months newer than Llama 3.1 Nemotron Ultra 253B v1.

Llama 3.1 Nemotron Ultra 253B v1

Apr 7, 2025

1.5 years ago

Nemotron Labs Dory 1.0 (4B)

Oct 16, 2026

6 days ago

1.5yr newer

Knowledge Cutoff

When training data ends

Llama 3.1 Nemotron Ultra 253B v1 has a documented knowledge cutoff of 2023-12-01, while Nemotron Labs Dory 1.0 (4B)'s cutoff date is not specified.

We can confirm Llama 3.1 Nemotron Ultra 253B v1's training data extends to 2023-12-01, but cannot make a direct comparison without Nemotron Labs Dory 1.0 (4B)'s cutoff date.

Llama 3.1 Nemotron Ultra 253B v1

Dec 2023

Nemotron Labs Dory 1.0 (4B)

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Outputs Comparison

Notice missing or incorrect data?

Judge for yourself.

Run your own prompts against Llama 3.1 Nemotron Ultra 253B v1 and Nemotron Labs Dory 1.0 (4B) side-by-side, then vote on the output you prefer.

Llama 3.1 Nemotron Ultra 253B v1
✓ Preferred
Nemotron Labs Dory 1.0 (4B)
Open in Playground

FAQ

Common questions about Llama 3.1 Nemotron Ultra 253B v1 vs Nemotron Labs Dory 1.0 (4B).

Which is better, Llama 3.1 Nemotron Ultra 253B v1 or Nemotron Labs Dory 1.0 (4B)?

Llama 3.1 Nemotron Ultra 253B v1 and Nemotron Labs Dory 1.0 (4B) are closely matched on the LLM Stats Score at 18.7 and 21.8. Llama 3.1 Nemotron Ultra 253B v1 is made by NVIDIA and Nemotron Labs Dory 1.0 (4B) is made by NVIDIA. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Llama 3.1 Nemotron Ultra 253B v1 compare to Nemotron Labs Dory 1.0 (4B) in benchmarks?

Llama 3.1 Nemotron Ultra 253B v1 scores MATH-500: 97.0%, IFEval: 89.5%, GPQA: 76.0%, BFCL v2: 74.1%, AIME 2025: 72.5%. Nemotron Labs Dory 1.0 (4B) scores IFBench: 77.9%, GPQA: 72.4%, AA-LCR: 71.0%, SWE-Bench Verified: 59.5%, SciCode: 34.9%.

What are the main differences between Llama 3.1 Nemotron Ultra 253B v1 and Nemotron Labs Dory 1.0 (4B)?

Key differences include LLM Stats Score (18.7 vs 21.8), licensing (Llama 3.1 Community License vs OpenMDW License v1.1). See the full comparison above for benchmark-by-benchmark results.

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