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DeepSeek-V4-Flash-0731 vs Nemotron 3 Ultra (550B A55B)

DeepSeek-V4-Flash-0731 leads the LLM Stats Score 46.1 to 37.0.

DeepSeek · NVIDIA · Updated for 2026

Which is better?

DeepSeek-V4-Flash-0731 leads the overall LLM Stats Score 46.1 to 37.0, ranking #23 overall.

In the 1 individual benchmarks reported for both models, DeepSeek-V4-Flash-0731 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 DeepSeek-V4-Flash-0731

  • overall performance matters — it scores 46.1 and ranks #23 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 Jul 2026

Choose Nemotron 3 Ultra (550B A55B)

  • you are already invested in the NVIDIA ecosystem

At a glance

The differences that matter most.

DeepSeek-V4-Flash-0731
DeepSeek
Nemotron 3 Ultra (550B A55B)
NVIDIA
Core performance indexes
LLM Stats Score
46.1
#23
37.0
#63
Reasoning
43.3
#35
36.3
#67
Coding
36.2
#24
22.1
#72
Agents
33.2
#21
13.4
#86
Cost, coverage & limits
Benchmark wins
1 of 1
0 of 1
Input price
$0.09 / M
— / M
Output price
$0.18 / M
— / M
Context window
1,048,576
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
DeepSeek-V4-Flash-0731
Nemotron 3 Ultra (550B A55B)
Tool use
27.1#21
7.4#132
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

9 reported for DeepSeek-V4-Flash-0731 · 26 for Nemotron 3 Ultra (550B A55B)

1 shared

DeepSeek-V4-Flash-0731 outperforms in 1 benchmarks (Terminal-Bench 2.1), while Nemotron 3 Ultra (550B A55B) is better at 0 benchmarks.

DeepSeek-V4-Flash-0731 significantly outperforms across most benchmarks.

Fri Aug 28 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Model Size

Parameter count comparison

246.0B diff

Nemotron 3 Ultra (550B A55B) has 246.0B more parameters than DeepSeek-V4-Flash-0731, making it 80.9% larger.

DeepSeek
DeepSeek-V4-Flash-0731
304.0Bparameters
NVIDIA
Nemotron 3 Ultra (550B A55B)
550.0Bparameters
304.0B
DeepSeek-V4-Flash-0731
550.0B
Nemotron 3 Ultra (550B A55B)

Context Window

Maximum input and output token capacity

Only DeepSeek-V4-Flash-0731 specifies input context (1,048,576 tokens). Only DeepSeek-V4-Flash-0731 specifies output context (384,000 tokens).

DeepSeek
DeepSeek-V4-Flash-0731
Input1,048,576 tokens
Output384,000 tokens
NVIDIA
Nemotron 3 Ultra (550B A55B)
Input- tokens
Output- tokens
Fri Aug 28 2026 • llm-stats.com

License

Usage and distribution terms

DeepSeek-V4-Flash-0731 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-0731

MIT

Open weights

Nemotron 3 Ultra (550B A55B)

OpenMDW License v1.1

Open weights

Release Timeline

When each model was launched

DeepSeek-V4-Flash-0731 was released on 2026-07-31, while Nemotron 3 Ultra (550B A55B) was released on 2026-06-04.

DeepSeek-V4-Flash-0731 is 2 months newer than Nemotron 3 Ultra (550B A55B).

DeepSeek-V4-Flash-0731

Jul 31, 2026

4 weeks ago

1mo newer
Nemotron 3 Ultra (550B A55B)

Jun 4, 2026

2 months ago

Knowledge Cutoff

When training data ends

Nemotron 3 Ultra (550B A55B) has a documented knowledge cutoff of 2025-09-30, while DeepSeek-V4-Flash-0731'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-0731's cutoff date.

DeepSeek-V4-Flash-0731

—

Nemotron 3 Ultra (550B A55B)

Sep 2025

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against DeepSeek-V4-Flash-0731 and Nemotron 3 Ultra (550B A55B) side-by-side, then vote on the output you prefer.

DeepSeek-V4-Flash-0731
✓ Preferred
Nemotron 3 Ultra (550B A55B)
Open in Playground

FAQ

Common questions about DeepSeek-V4-Flash-0731 vs Nemotron 3 Ultra (550B A55B).

Which is better, DeepSeek-V4-Flash-0731 or Nemotron 3 Ultra (550B A55B)?

DeepSeek-V4-Flash-0731 leads the LLM Stats Score 46.1 to 37.0. DeepSeek-V4-Flash-0731 is made by DeepSeek and Nemotron 3 Ultra (550B A55B) is made by NVIDIA. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does DeepSeek-V4-Flash-0731 compare to Nemotron 3 Ultra (550B A55B) in benchmarks?

DeepSeek-V4-Flash-0731 scores Terminal-Bench 2.1: 82.7%, CyberGym: 76.7%, Toolathlon: 70.3%, DSBench-FullStack: 68.7%, DSBench-Hard: 59.6%. 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-0731 and Nemotron 3 Ultra (550B A55B)?

DeepSeek-V4-Flash-0731 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-0731 and Nemotron 3 Ultra (550B A55B)?

Key differences include LLM Stats Score (46.1 vs 37.0), licensing (MIT vs OpenMDW License v1.1). See the full comparison above for benchmark-by-benchmark results.

Who makes DeepSeek-V4-Flash-0731 and Nemotron 3 Ultra (550B A55B)?

DeepSeek-V4-Flash-0731 is developed by DeepSeek and Nemotron 3 Ultra (550B A55B) is developed by NVIDIA.

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