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Hy4 preview vs Llama 3.1 Nemotron Ultra 253B v1

Hy4 preview leads the LLM Stats Score 51.5 to 19.4.

Tencent · NVIDIA · Updated for 2026

Which is better?

Hy4 preview leads the overall LLM Stats Score 51.5 to 19.4, ranking #10 overall.

In the 1 individual benchmarks reported for both models, Hy4 preview 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 Hy4 preview

  • overall performance matters — it scores 51.5 and ranks #10 on LLM Stats
  • your work emphasizes reasoning and coding — it leads those capability indexes
  • you value its reported benchmark strengths — it wins 1 of 1 exact shared results
  • you want the most recent training data — it shipped Aug 2026

Choose Llama 3.1 Nemotron Ultra 253B v1

  • you are already invested in the NVIDIA ecosystem

At a glance

The differences that matter most.

Hy4 preview
Tencent
Llama 3.1 Nemotron Ultra 253B v1
NVIDIA
Core performance indexes
LLM Stats Score
51.5
#10
19.4
#190
Reasoning
51.2
#8
19.1
#189
Coding
40.9
#10
12.6
#134
Cost, coverage & limits
Benchmark wins
1 of 1
0 of 1
Input price
— / M
— / M
Output price
— / M
— / M
Context window
—
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Hy4 preview
Llama 3.1 Nemotron Ultra 253B v1
Math
40.3#12
15.7#205
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

32 reported for Hy4 preview · 6 for Llama 3.1 Nemotron Ultra 253B v1

1 shared

Hy4 preview outperforms in 1 benchmarks (GPQA), while Llama 3.1 Nemotron Ultra 253B v1 is better at 0 benchmarks.

Hy4 preview significantly outperforms across most benchmarks.

Mon Aug 31 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Model Size

Parameter count comparison

517.0B diff

Hy4 preview has 517.0B more parameters than Llama 3.1 Nemotron Ultra 253B v1, making it 204.3% larger.

Tencent
Hy4 preview
770.0Bparameters
NVIDIA
Llama 3.1 Nemotron Ultra 253B v1
253.0Bparameters
770.0B
Hy4 preview
253.0B
Llama 3.1 Nemotron Ultra 253B v1

License

Usage and distribution terms

Hy4 preview is licensed under Apache 2.0, while Llama 3.1 Nemotron Ultra 253B v1 uses Llama 3.1 Community License.

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

Hy4 preview

Apache 2.0

Open weights

Llama 3.1 Nemotron Ultra 253B v1

Llama 3.1 Community License

Open weights

Release Timeline

When each model was launched

Hy4 preview was released on 2026-08-28, while Llama 3.1 Nemotron Ultra 253B v1 was released on 2025-04-07.

Hy4 preview is 17 months newer than Llama 3.1 Nemotron Ultra 253B v1.

Hy4 preview

Aug 28, 2026

3 days ago

1.4yr newer
Llama 3.1 Nemotron Ultra 253B v1

Apr 7, 2025

1.4 years ago

Knowledge Cutoff

When training data ends

Llama 3.1 Nemotron Ultra 253B v1 has a documented knowledge cutoff of 2023-12-01, while Hy4 preview'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 Hy4 preview's cutoff date.

Hy4 preview

—

Llama 3.1 Nemotron Ultra 253B v1

Dec 2023

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against Hy4 preview and Llama 3.1 Nemotron Ultra 253B v1 side-by-side, then vote on the output you prefer.

Hy4 preview
✓ Preferred
Llama 3.1 Nemotron Ultra 253B v1
Open in Playground

FAQ

Common questions about Hy4 preview vs Llama 3.1 Nemotron Ultra 253B v1.

Which is better, Hy4 preview or Llama 3.1 Nemotron Ultra 253B v1?

Hy4 preview leads the LLM Stats Score 51.5 to 19.4. Hy4 preview is made by Tencent and Llama 3.1 Nemotron Ultra 253B v1 is made by NVIDIA. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Hy4 preview compare to Llama 3.1 Nemotron Ultra 253B v1 in benchmarks?

Hy4 preview scores GPQA: 92.3%, Terminal-Bench 2.1: 85.4%, WideSearch: 83.9%, MCP Atlas: 83.7%, SWE-bench Multilingual: 82.9%. 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%.

What are the main differences between Hy4 preview and Llama 3.1 Nemotron Ultra 253B v1?

Key differences include LLM Stats Score (51.5 vs 19.4), licensing (Apache 2.0 vs Llama 3.1 Community License). See the full comparison above for benchmark-by-benchmark results.

Who makes Hy4 preview and Llama 3.1 Nemotron Ultra 253B v1?

Hy4 preview is developed by Tencent and Llama 3.1 Nemotron Ultra 253B v1 is developed by NVIDIA.

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