Model Comparison

Nemotron 3 Ultra (550B A55B) vs MiMo-V2-ProWhich is better in 2026?

MiMo-V2-Pro shows notably better performance in the majority of benchmarks.

Verdict: Nemotron 3 Ultra (550B A55B) vs MiMo-V2-Pro — which is better?

Nemotron 3 Ultra (550B A55B) (by NVIDIA) and MiMo-V2-Pro (by Xiaomi) 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.

Nemotron 3 Ultra (550B A55B) outperforms in 1 benchmarks (PinchBench), while MiMo-V2-Pro is better at 3 benchmarks (GDPval-AA, SWE-bench Multilingual, SWE-Bench Verified). MiMo-V2-Pro shows notably better performance in the majority of benchmarks.

Choose Nemotron 3 Ultra (550B A55B) if…

  • you want the most recent training data — it shipped Jun 2026
  • you need open weights you can self-host or fine-tune

Choose MiMo-V2-Pro if…

  • you want the strongest raw capability — it leads on 3 of 4 shared benchmarks

Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

Nemotron 3 Ultra (550B A55B) outperforms in 1 benchmarks (PinchBench), while MiMo-V2-Pro is better at 3 benchmarks (GDPval-AA, SWE-bench Multilingual, SWE-Bench Verified).

MiMo-V2-Pro 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

450.0B diff

MiMo-V2-Pro has 450.0B more parameters than Nemotron 3 Ultra (550B A55B), making it 81.8% larger.

NVIDIA
Nemotron 3 Ultra (550B A55B)
550.0Bparameters
Xiaomi
MiMo-V2-Pro
1.0Tparameters
550.0B
Nemotron 3 Ultra (550B A55B)
1000.0B
MiMo-V2-Pro

Context Window

Maximum input and output token capacity

Only MiMo-V2-Pro specifies input context (1,000,000 tokens). Only MiMo-V2-Pro specifies output context (16,384 tokens).

NVIDIA
Nemotron 3 Ultra (550B A55B)
Input- tokens
Output- tokens
Xiaomi
MiMo-V2-Pro
Input1,000,000 tokens
Output16,384 tokens
Fri Jul 17 2026 • llm-stats.com

License

Usage and distribution terms

Nemotron 3 Ultra (550B A55B) is licensed under OpenMDW License v1.1, while MiMo-V2-Pro uses a proprietary license.

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

Nemotron 3 Ultra (550B A55B)

OpenMDW License v1.1

Open weights

MiMo-V2-Pro

Proprietary

Closed source

Release Timeline

When each model was launched

Nemotron 3 Ultra (550B A55B) was released on 2026-06-04, while MiMo-V2-Pro was released on 2026-03-18.

Nemotron 3 Ultra (550B A55B) is 3 months newer than MiMo-V2-Pro.

Nemotron 3 Ultra (550B A55B)

Jun 4, 2026

1 months ago

2mo newer
MiMo-V2-Pro

Mar 18, 2026

4 months ago

Knowledge Cutoff

When training data ends

Nemotron 3 Ultra (550B A55B) has a documented knowledge cutoff of 2025-09-30, while MiMo-V2-Pro'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 MiMo-V2-Pro's cutoff date.

Nemotron 3 Ultra (550B A55B)

Sep 2025

MiMo-V2-Pro

—

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

NVIDIA
Has open weights
Higher PinchBench score (90.0% vs 81.0%)
Xiaomi
Larger context window (1,000,000 tokens)
Higher GDPval-AA score (47.5% vs 39.4%)
Higher SWE-bench Multilingual score (71.7% vs 67.7%)
Higher SWE-Bench Verified score (78.0% vs 70.7%)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Nemotron 3 Ultra (550B A55B) and MiMo-V2-Pro side-by-side, then vote on the output you prefer.

Nemotron 3 Ultra (550B A55B)
✓ Preferred
MiMo-V2-Pro
Open in Playground
AI Model Comparison Table
Feature
NVIDIA
Nemotron 3 Ultra (550B A55B)
Xiaomi
MiMo-V2-Pro

FAQ

Common questions about Nemotron 3 Ultra (550B A55B) vs MiMo-V2-Pro.

Which is better, Nemotron 3 Ultra (550B A55B) or MiMo-V2-Pro?

MiMo-V2-Pro shows notably better performance in the majority of benchmarks. Nemotron 3 Ultra (550B A55B) is made by NVIDIA and MiMo-V2-Pro is made by Xiaomi. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Nemotron 3 Ultra (550B A55B) compare to MiMo-V2-Pro in benchmarks?

Nemotron 3 Ultra (550B A55B) scores RULER: 94.7%, IMO-AnswerBench: 92.3%, PinchBench: 90.0%, LiveCodeBench v6: 89.0%, GPQA: 87.0%. MiMo-V2-Pro scores Tau2 Telecom: 96.8%, DeepSearchQA: 86.7%, PinchBench: 81.0%, SWE-Bench Verified: 78.0%, SWE-bench Multilingual: 71.7%.

What are the context window sizes for Nemotron 3 Ultra (550B A55B) and MiMo-V2-Pro?

Nemotron 3 Ultra (550B A55B) supports an unknown number of tokens and MiMo-V2-Pro supports 1.0M tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Nemotron 3 Ultra (550B A55B) and MiMo-V2-Pro?

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

Who makes Nemotron 3 Ultra (550B A55B) and MiMo-V2-Pro?

Nemotron 3 Ultra (550B A55B) is developed by NVIDIA and MiMo-V2-Pro is developed by Xiaomi.

Related comparisons