Model Comparison

Nemotron 3 Ultra (550B A55B) vs MiMo-V2.5Which is better in 2026?

Nemotron 3 Ultra (550B A55B) significantly outperforms across most benchmarks.

Verdict: Nemotron 3 Ultra (550B A55B) vs MiMo-V2.5 — which is better?

Nemotron 3 Ultra (550B A55B) (by NVIDIA) and MiMo-V2.5 (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 (Finance Agent v2), while MiMo-V2.5 is better at 0 benchmarks. Nemotron 3 Ultra (550B A55B) significantly outperforms across most benchmarks.

Choose Nemotron 3 Ultra (550B A55B) if…

  • you want the strongest raw capability — it leads on 1 of 1 shared benchmarks
  • you want the most recent training data — it shipped Jun 2026

Choose MiMo-V2.5 if…

  • you want predictable pricing at $0.17/M input and $0.34/M output

Performance Benchmarks

Comparative analysis across standard metrics

1 benchmarks

Nemotron 3 Ultra (550B A55B) outperforms in 1 benchmarks (Finance Agent v2), while MiMo-V2.5 is better at 0 benchmarks.

Nemotron 3 Ultra (550B A55B) significantly outperforms across most benchmarks.

Fri Jul 17 2026 • llm-stats.com

Arena Performance

Human preference votes

Model Size

Parameter count comparison

239.2B diff

Nemotron 3 Ultra (550B A55B) has 239.2B more parameters than MiMo-V2.5, making it 77.0% larger.

NVIDIA
Nemotron 3 Ultra (550B A55B)
550.0Bparameters
Xiaomi
MiMo-V2.5
310.8Bparameters
550.0B
Nemotron 3 Ultra (550B A55B)
310.8B
MiMo-V2.5

Context Window

Maximum input and output token capacity

Only MiMo-V2.5 specifies input context (1,048,576 tokens). Only MiMo-V2.5 specifies output context (131,072 tokens).

NVIDIA
Nemotron 3 Ultra (550B A55B)
Input- tokens
Output- tokens
Xiaomi
MiMo-V2.5
Input1,048,576 tokens
Output131,072 tokens
Fri Jul 17 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

MiMo-V2.5 supports multimodal inputs, whereas Nemotron 3 Ultra (550B A55B) does not.

MiMo-V2.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Nemotron 3 Ultra (550B A55B)

Text
Images
Audio
Video

MiMo-V2.5

Text
Images
Audio
Video

License

Usage and distribution terms

Nemotron 3 Ultra (550B A55B) is licensed under OpenMDW License v1.1, while MiMo-V2.5 uses MIT.

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-V2.5

MIT

Open weights

Release Timeline

When each model was launched

Nemotron 3 Ultra (550B A55B) was released on 2026-06-04, while MiMo-V2.5 was released on 2026-04-22.

Nemotron 3 Ultra (550B A55B) is 1 month newer than MiMo-V2.5.

Nemotron 3 Ultra (550B A55B)

Jun 4, 2026

1 months ago

1mo newer
MiMo-V2.5

Apr 22, 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 MiMo-V2.5'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-V2.5's cutoff date.

Nemotron 3 Ultra (550B A55B)

Sep 2025

MiMo-V2.5

—

Outputs Comparison

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Key Takeaways

NVIDIA
Higher Finance Agent v2 score (37.5% vs 36.7%)
Xiaomi
Larger context window (1,048,576 tokens)
Supports multimodal inputs

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Nemotron 3 Ultra (550B A55B) and MiMo-V2.5 side-by-side, then vote on the output you prefer.

Nemotron 3 Ultra (550B A55B)
✓ Preferred
MiMo-V2.5
Open in Playground
AI Model Comparison Table
Feature
NVIDIA
Nemotron 3 Ultra (550B A55B)
Xiaomi
MiMo-V2.5

FAQ

Common questions about Nemotron 3 Ultra (550B A55B) vs MiMo-V2.5.

Which is better, Nemotron 3 Ultra (550B A55B) or MiMo-V2.5?

Nemotron 3 Ultra (550B A55B) significantly outperforms across most benchmarks. Nemotron 3 Ultra (550B A55B) is made by NVIDIA and MiMo-V2.5 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-V2.5 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-V2.5 scores HR-Bench (4k): 88.5%, Video-MME: 87.7%, OmniDocBench: 87.2%, GraphWalks: 87.0%, DailyOmni: 83.5%.

What are the context window sizes for Nemotron 3 Ultra (550B A55B) and MiMo-V2.5?

Nemotron 3 Ultra (550B A55B) supports an unknown number of tokens and MiMo-V2.5 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-V2.5?

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

Who makes Nemotron 3 Ultra (550B A55B) and MiMo-V2.5?

Nemotron 3 Ultra (550B A55B) is developed by NVIDIA and MiMo-V2.5 is developed by Xiaomi.

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