Model Comparison

DeepSeek-V4-Flash-Max vs Nemotron 3 Ultra (550B A55B)Which is better in 2026?

DeepSeek-V4-Flash-Max shows notably better performance in the majority of benchmarks.

Verdict: DeepSeek-V4-Flash-Max vs Nemotron 3 Ultra (550B A55B) — which is better?

DeepSeek-V4-Flash-Max (by DeepSeek) 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.

DeepSeek-V4-Flash-Max outperforms in 6 benchmarks (BrowseComp, GDPval-AA, GPQA, Humanity's Last Exam, SWE-bench Multilingual, SWE-Bench Verified), while Nemotron 3 Ultra (550B A55B) is better at 2 benchmarks (IMO-AnswerBench, MMLU-Pro). DeepSeek-V4-Flash-Max shows notably better performance in the majority of benchmarks.

Choose DeepSeek-V4-Flash-Max if…

  • you want the strongest raw capability — it leads on 6 of 8 shared benchmarks

Choose Nemotron 3 Ultra (550B A55B) if…

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

Performance Benchmarks

Comparative analysis across standard metrics

8 benchmarks

DeepSeek-V4-Flash-Max outperforms in 6 benchmarks (BrowseComp, GDPval-AA, GPQA, Humanity's Last Exam, SWE-bench Multilingual, SWE-Bench Verified), while Nemotron 3 Ultra (550B A55B) is better at 2 benchmarks (IMO-AnswerBench, MMLU-Pro).

DeepSeek-V4-Flash-Max shows notably better performance in the majority of benchmarks.

Fri Jul 17 2026 • llm-stats.com

Arena Performance

Human preference votes

Model Size

Parameter count comparison

266.0B diff

Nemotron 3 Ultra (550B A55B) has 266.0B more parameters than DeepSeek-V4-Flash-Max, making it 93.7% larger.

DeepSeek
DeepSeek-V4-Flash-Max
284.0Bparameters
NVIDIA
Nemotron 3 Ultra (550B A55B)
550.0Bparameters
284.0B
DeepSeek-V4-Flash-Max
550.0B
Nemotron 3 Ultra (550B A55B)

Context Window

Maximum input and output token capacity

Only DeepSeek-V4-Flash-Max specifies input context (1,048,576 tokens). Only DeepSeek-V4-Flash-Max specifies output context (65,536 tokens).

DeepSeek
DeepSeek-V4-Flash-Max
Input1,048,576 tokens
Output65,536 tokens
NVIDIA
Nemotron 3 Ultra (550B A55B)
Input- tokens
Output- tokens
Fri Jul 17 2026 • llm-stats.com

License

Usage and distribution terms

DeepSeek-V4-Flash-Max is licensed under MIT, 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.

DeepSeek-V4-Flash-Max

MIT

Open weights

Nemotron 3 Ultra (550B A55B)

OpenMDW License v1.1

Open weights

Release Timeline

When each model was launched

DeepSeek-V4-Flash-Max was released on 2026-04-23, while Nemotron 3 Ultra (550B A55B) was released on 2026-06-04.

Nemotron 3 Ultra (550B A55B) is 1 month newer than DeepSeek-V4-Flash-Max.

DeepSeek-V4-Flash-Max

Apr 23, 2026

2 months ago

Nemotron 3 Ultra (550B A55B)

Jun 4, 2026

1 months ago

1mo newer

Knowledge Cutoff

When training data ends

Nemotron 3 Ultra (550B A55B) has a documented knowledge cutoff of 2025-09-30, while DeepSeek-V4-Flash-Max'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 DeepSeek-V4-Flash-Max's cutoff date.

DeepSeek-V4-Flash-Max

—

Nemotron 3 Ultra (550B A55B)

Sep 2025

Outputs Comparison

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Key Takeaways

DeepSeek
Larger context window (1,048,576 tokens)
Higher BrowseComp score (73.2% vs 44.4%)
Higher GDPval-AA score (40.1% vs 39.4%)
Higher GPQA score (88.1% vs 87.0%)
Higher Humanity's Last Exam score (45.1% vs 37.4%)
Higher SWE-bench Multilingual score (73.3% vs 67.7%)
Higher SWE-Bench Verified score (79.0% vs 70.7%)
NVIDIA
Higher IMO-AnswerBench score (92.3% vs 88.4%)
Higher MMLU-Pro score (86.8% vs 86.2%)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against DeepSeek-V4-Flash-Max and Nemotron 3 Ultra (550B A55B) side-by-side, then vote on the output you prefer.

DeepSeek-V4-Flash-Max
✓ Preferred
Nemotron 3 Ultra (550B A55B)
Open in Playground
AI Model Comparison Table
Feature
DeepSeek
DeepSeek-V4-Flash-Max
NVIDIA
Nemotron 3 Ultra (550B A55B)

FAQ

Common questions about DeepSeek-V4-Flash-Max vs Nemotron 3 Ultra (550B A55B).

Which is better, DeepSeek-V4-Flash-Max or Nemotron 3 Ultra (550B A55B)?

DeepSeek-V4-Flash-Max shows notably better performance in the majority of benchmarks. DeepSeek-V4-Flash-Max is made by DeepSeek 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 DeepSeek-V4-Flash-Max compare to Nemotron 3 Ultra (550B A55B) in benchmarks?

DeepSeek-V4-Flash-Max scores CodeForces: 100.0%, HMMT Feb 26: 94.8%, LiveCodeBench: 91.6%, IMO-AnswerBench: 88.4%, GPQA: 88.1%. 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 context window sizes for DeepSeek-V4-Flash-Max and Nemotron 3 Ultra (550B A55B)?

DeepSeek-V4-Flash-Max supports 1.0M tokens and Nemotron 3 Ultra (550B A55B) 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 DeepSeek-V4-Flash-Max and Nemotron 3 Ultra (550B A55B)?

Key differences include licensing (MIT vs OpenMDW License v1.1). See the full comparison above for benchmark-by-benchmark results.

Who makes DeepSeek-V4-Flash-Max and Nemotron 3 Ultra (550B A55B)?

DeepSeek-V4-Flash-Max is developed by DeepSeek and Nemotron 3 Ultra (550B A55B) is developed by NVIDIA.

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