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Claude 3.5 Sonnet vs Llama 3.1 Nemotron Ultra 253B v1

Claude 3.5 Sonnet and Llama 3.1 Nemotron Ultra 253B v1 are closely matched at 19.4 and 19.5 on the LLM Stats Score.

Anthropic · NVIDIA · Updated for 2026

Which is better?

Claude 3.5 Sonnet and Llama 3.1 Nemotron Ultra 253B v1 are closely matched on the overall LLM Stats Score at 19.4 and 19.5.

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 Claude 3.5 Sonnet

  • you want predictable pricing at $3.00/M input and $15.00/M output

Choose Llama 3.1 Nemotron Ultra 253B v1

  • you value its reported benchmark strengths — it wins 1 of 1 exact shared results
  • you want the most recent training data — it shipped Apr 2025
  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Claude 3.5 Sonnet
Anthropic
Llama 3.1 Nemotron Ultra 253B v1
NVIDIA
Core performance indexes
LLM Stats Score
19.4
#189
19.5
#188
Reasoning
20.4
#171
19.1
#186
Coding
11.6
#141
12.4
#132
Cost, coverage & limits
Benchmark wins
0 of 1
1 of 1
Input price
$3.00 / M
— / M
Output price
$15.00 / M
— / M
Context window
200,000
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
Claude 3.5 Sonnet
Llama 3.1 Nemotron Ultra 253B v1
Math
23.4#120
15.9#200
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

19 reported for Claude 3.5 Sonnet · 6 for Llama 3.1 Nemotron Ultra 253B v1

1 shared

Claude 3.5 Sonnet outperforms in 0 benchmarks, while Llama 3.1 Nemotron Ultra 253B v1 is better at 1 benchmark (GPQA).

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

Fri Aug 28 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Context Window

Maximum input and output token capacity

Only Claude 3.5 Sonnet specifies input context (200,000 tokens). Only Claude 3.5 Sonnet specifies output context (200,000 tokens).

Anthropic
Claude 3.5 Sonnet
Input200,000 tokens
Output200,000 tokens
NVIDIA
Llama 3.1 Nemotron Ultra 253B v1
Input- tokens
Output- tokens
Fri Aug 28 2026 • llm-stats.com

Input capabilities

Documented input modalities across available providers

Claude 3.5 Sonnet supports multimodal inputs, whereas Llama 3.1 Nemotron Ultra 253B v1 does not.

Claude 3.5 Sonnet can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude 3.5 Sonnet

Text
Images
Audio
Video

Llama 3.1 Nemotron Ultra 253B v1

Text
Images
Audio
Video

License

Usage and distribution terms

Claude 3.5 Sonnet is licensed under a proprietary license, 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.

Claude 3.5 Sonnet

Proprietary

Closed source

Llama 3.1 Nemotron Ultra 253B v1

Llama 3.1 Community License

Open weights

Release Timeline

When each model was launched

Claude 3.5 Sonnet was released on 2024-10-22, while Llama 3.1 Nemotron Ultra 253B v1 was released on 2025-04-07.

Llama 3.1 Nemotron Ultra 253B v1 is 6 months newer than Claude 3.5 Sonnet.

Claude 3.5 Sonnet

Oct 22, 2024

1.8 years ago

Llama 3.1 Nemotron Ultra 253B v1

Apr 7, 2025

1.4 years ago

5mo newer

Knowledge Cutoff

When training data ends

Llama 3.1 Nemotron Ultra 253B v1 has a documented knowledge cutoff of 2023-12-01, while Claude 3.5 Sonnet'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 Claude 3.5 Sonnet's cutoff date.

Claude 3.5 Sonnet

—

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 Claude 3.5 Sonnet and Llama 3.1 Nemotron Ultra 253B v1 side-by-side, then vote on the output you prefer.

Claude 3.5 Sonnet
✓ Preferred
Llama 3.1 Nemotron Ultra 253B v1
Open in Playground

FAQ

Common questions about Claude 3.5 Sonnet vs Llama 3.1 Nemotron Ultra 253B v1.

Which is better, Claude 3.5 Sonnet or Llama 3.1 Nemotron Ultra 253B v1?

Claude 3.5 Sonnet and Llama 3.1 Nemotron Ultra 253B v1 are closely matched on the LLM Stats Score at 19.4 and 19.5. Claude 3.5 Sonnet is made by Anthropic 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 Claude 3.5 Sonnet compare to Llama 3.1 Nemotron Ultra 253B v1 in benchmarks?

Claude 3.5 Sonnet scores GSM8k: 96.4%, DocVQA: 95.2%, AI2D: 94.7%, HumanEval: 93.7%, BIG-Bench Hard: 93.1%. 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 context window sizes for Claude 3.5 Sonnet and Llama 3.1 Nemotron Ultra 253B v1?

Claude 3.5 Sonnet supports 200K tokens and Llama 3.1 Nemotron Ultra 253B v1 supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Claude 3.5 Sonnet and Llama 3.1 Nemotron Ultra 253B v1?

Key differences include LLM Stats Score (19.4 vs 19.5), multimodal support (yes vs no), licensing (Proprietary vs Llama 3.1 Community License). See the full comparison above for benchmark-by-benchmark results.

Who makes Claude 3.5 Sonnet and Llama 3.1 Nemotron Ultra 253B v1?

Claude 3.5 Sonnet is developed by Anthropic and Llama 3.1 Nemotron Ultra 253B v1 is developed by NVIDIA.

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