Model Comparison

Claude 3 Opus vs Llama 3.1 Nemotron Ultra 253B v1Which is better in 2026?

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

Verdict: Claude 3 Opus vs Llama 3.1 Nemotron Ultra 253B v1 — which is better?

Claude 3 Opus (by Anthropic) and Llama 3.1 Nemotron Ultra 253B v1 (by NVIDIA) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.

Claude 3 Opus 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.

Choose Claude 3 Opus if…

  • you want predictable pricing at $15.00/M input and $75.00/M output

Choose Llama 3.1 Nemotron Ultra 253B v1 if…

  • you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
  • you want the most recent training data — it shipped Apr 2025
  • you need open weights you can self-host or fine-tune
Want to compare interactively?Try the playground

Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Claude 3 Opus 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.

Sat Jun 13 2026 • llm-stats.com

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only Claude 3 Opus specifies input context (200,000 tokens). Only Claude 3 Opus specifies output context (200,000 tokens).

Anthropic
Claude 3 Opus
Input200,000 tokens
Output200,000 tokens
NVIDIA
Llama 3.1 Nemotron Ultra 253B v1
Input- tokens
Output- tokens
Sat Jun 13 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Claude 3 Opus supports multimodal inputs, whereas Llama 3.1 Nemotron Ultra 253B v1 does not.

Claude 3 Opus can handle both text and other forms of data like images, making it suitable for multimodal applications.

Claude 3 Opus

Text
Images
Audio
Video

Llama 3.1 Nemotron Ultra 253B v1

Text
Images
Audio
Video

License

Usage and distribution terms

Claude 3 Opus 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 Opus

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 Opus was released on 2024-02-29, while Llama 3.1 Nemotron Ultra 253B v1 was released on 2025-04-07.

Llama 3.1 Nemotron Ultra 253B v1 is 13 months newer than Claude 3 Opus.

Claude 3 Opus

Feb 29, 2024

2.3 years ago

Llama 3.1 Nemotron Ultra 253B v1

Apr 7, 2025

1.2 years ago

1.1yr 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 Opus'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 Opus's cutoff date.

Claude 3 Opus

—

Llama 3.1 Nemotron Ultra 253B v1

Dec 2023

Outputs Comparison

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Key Takeaways

Anthropic
Larger context window (200,000 tokens)
Supports multimodal inputs
NVIDIA
Has open weights
Higher GPQA score (76.0% vs 50.4%)

Detailed Comparison

AI Model Comparison Table
Feature
Anthropic
Claude 3 Opus
NVIDIA
Llama 3.1 Nemotron Ultra 253B v1

FAQ

Common questions about Claude 3 Opus vs Llama 3.1 Nemotron Ultra 253B v1.

Which is better, Claude 3 Opus or Llama 3.1 Nemotron Ultra 253B v1?

Llama 3.1 Nemotron Ultra 253B v1 significantly outperforms across most benchmarks. Claude 3 Opus 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 benchmark scores, pricing, and capabilities above.

How does Claude 3 Opus compare to Llama 3.1 Nemotron Ultra 253B v1 in benchmarks?

Claude 3 Opus scores ARC-C: 96.4%, HellaSwag: 95.4%, GSM8k: 95.0%, MGSM: 90.7%, BIG-Bench Hard: 86.8%. 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 Opus and Llama 3.1 Nemotron Ultra 253B v1?

Claude 3 Opus 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 Opus and Llama 3.1 Nemotron Ultra 253B v1?

Key differences include 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 Opus and Llama 3.1 Nemotron Ultra 253B v1?

Claude 3 Opus is developed by Anthropic and Llama 3.1 Nemotron Ultra 253B v1 is developed by NVIDIA.

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