Model Comparison

Seed 2.1 Turbo vs Nemotron 3 Ultra (550B A55B)Which is better in 2026?

Seed 2.1 Turbo significantly outperforms across most benchmarks.

Verdict: Seed 2.1 Turbo vs Nemotron 3 Ultra (550B A55B) — which is better?

Seed 2.1 Turbo (by ByteDance) and Nemotron 3 Ultra (550B A55B) (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.

Seed 2.1 Turbo outperforms in 5 benchmarks (BrowseComp, GDPval, Humanity's Last Exam, SciCode, Terminal-Bench 2.1), while Nemotron 3 Ultra (550B A55B) is better at 0 benchmarks. Seed 2.1 Turbo significantly outperforms across most benchmarks.

Choose Seed 2.1 Turbo if…

  • you want the strongest raw capability — it leads on 5 of 5 shared benchmarks
  • you want the most recent training data — it shipped Jun 2026

Choose Nemotron 3 Ultra (550B A55B) if…

  • you need open weights you can self-host or fine-tune

Performance Benchmarks

Comparative analysis across standard metrics

5 benchmarks

Seed 2.1 Turbo outperforms in 5 benchmarks (BrowseComp, GDPval, Humanity's Last Exam, SciCode, Terminal-Bench 2.1), while Nemotron 3 Ultra (550B A55B) is better at 0 benchmarks.

Seed 2.1 Turbo significantly outperforms across most benchmarks.

Fri Jul 17 2026 • llm-stats.com

Arena Performance

Human preference votes

Input Capabilities

Supported data types and modalities

Seed 2.1 Turbo supports multimodal inputs, whereas Nemotron 3 Ultra (550B A55B) does not.

Seed 2.1 Turbo can handle both text and other forms of data like images, making it suitable for multimodal applications.

Seed 2.1 Turbo

Text
Images
Audio
Video

Nemotron 3 Ultra (550B A55B)

Text
Images
Audio
Video

License

Usage and distribution terms

Seed 2.1 Turbo is licensed under a proprietary license, while Nemotron 3 Ultra (550B A55B) uses OpenMDW License v1.1.

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

Seed 2.1 Turbo

Proprietary

Closed source

Nemotron 3 Ultra (550B A55B)

OpenMDW License v1.1

Open weights

Release Timeline

When each model was launched

Seed 2.1 Turbo was released on 2026-06-24, while Nemotron 3 Ultra (550B A55B) was released on 2026-06-04.

Seed 2.1 Turbo is 1 month newer than Nemotron 3 Ultra (550B A55B).

Seed 2.1 Turbo

Jun 24, 2026

3 weeks ago

2w newer
Nemotron 3 Ultra (550B A55B)

Jun 4, 2026

1 months ago

Knowledge Cutoff

When training data ends

Nemotron 3 Ultra (550B A55B) has a documented knowledge cutoff of 2025-09-30, while Seed 2.1 Turbo's cutoff date is not specified.

We can confirm Nemotron 3 Ultra (550B A55B)'s training data extends to 2025-09-30, but cannot make a direct comparison without Seed 2.1 Turbo's cutoff date.

Seed 2.1 Turbo

—

Nemotron 3 Ultra (550B A55B)

Sep 2025

Outputs Comparison

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Key Takeaways

ByteDance
Supports multimodal inputs
Higher BrowseComp score (84.9% vs 44.4%)
Higher GDPval score (82.7% vs 46.7%)
Higher Humanity's Last Exam score (54.6% vs 37.4%)
Higher SciCode score (57.8% vs 44.6%)
Higher Terminal-Bench 2.1 score (67.6% vs 56.4%)
NVIDIA
Has open weights

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Seed 2.1 Turbo and Nemotron 3 Ultra (550B A55B) side-by-side, then vote on the output you prefer.

Seed 2.1 Turbo
✓ Preferred
Nemotron 3 Ultra (550B A55B)
Open in Playground
AI Model Comparison Table
Feature
ByteDance
Seed 2.1 Turbo
NVIDIA
Nemotron 3 Ultra (550B A55B)

FAQ

Common questions about Seed 2.1 Turbo vs Nemotron 3 Ultra (550B A55B).

Which is better, Seed 2.1 Turbo or Nemotron 3 Ultra (550B A55B)?

Seed 2.1 Turbo significantly outperforms across most benchmarks. Seed 2.1 Turbo is made by ByteDance and Nemotron 3 Ultra (550B A55B) is made by NVIDIA. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Seed 2.1 Turbo compare to Nemotron 3 Ultra (550B A55B) in benchmarks?

Seed 2.1 Turbo scores CharXiv-D: 94.6%, MathVision: 92.7%, MathVista: 90.5%, MathVerse: 89.2%, Video-MME: 89.0%. Nemotron 3 Ultra (550B A55B) scores RULER: 94.7%, IMO-AnswerBench: 92.3%, PinchBench: 90.0%, LiveCodeBench v6: 89.0%, GPQA: 87.0%.

What are the main differences between Seed 2.1 Turbo and Nemotron 3 Ultra (550B A55B)?

Key differences include multimodal support (yes vs no), licensing (Proprietary vs OpenMDW License v1.1). See the full comparison above for benchmark-by-benchmark results.

Who makes Seed 2.1 Turbo and Nemotron 3 Ultra (550B A55B)?

Seed 2.1 Turbo is developed by ByteDance and Nemotron 3 Ultra (550B A55B) is developed by NVIDIA.

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