Nemotron 3 Ultra (550B A55B) vs Sakana Namazu
Sakana Namazu leads the LLM Stats Score 43.2 to 37.0.
NVIDIA · Sakana AI · Updated for 2026
Which is better?
Sakana Namazu leads the overall LLM Stats Score 43.2 to 37.0, ranking #37 overall.
In the 2 individual benchmarks reported for both models, Sakana Namazu wins 2; 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 Nemotron 3 Ultra (550B A55B)
- you need open weights you can self-host or fine-tune
Choose Sakana Namazu
- overall performance matters — it scores 43.2 and ranks #37 on LLM Stats
- your work emphasizes reasoning — it leads those capability indexes
- you value its reported benchmark strengths — it wins 2 of 2 exact shared results
- you want the most recent training data — it shipped Aug 2026
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
26 reported for Nemotron 3 Ultra (550B A55B) · 3 for Sakana Namazu
Nemotron 3 Ultra (550B A55B) outperforms in 0 benchmarks, while Sakana Namazu is better at 2 benchmarks (LiveCodeBench v6, MMLU-Pro).
Sakana Namazu significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Context Window
Maximum input and output token capacity
Only Sakana Namazu specifies input context (256,000 tokens). Only Sakana Namazu specifies output context (256,000 tokens).
Input capabilities
Documented input modalities across available providers
Sakana Namazu supports multimodal inputs, whereas Nemotron 3 Ultra (550B A55B) does not.
Sakana Namazu can handle both text and other forms of data like images, making it suitable for multimodal applications.
Nemotron 3 Ultra (550B A55B)
Sakana Namazu
License
Usage and distribution terms
Nemotron 3 Ultra (550B A55B) is licensed under OpenMDW License v1.1, while Sakana Namazu uses a proprietary license.
License differences may affect how you can use these models in commercial or open-source projects.
OpenMDW License v1.1
Open weights
Proprietary
Closed source
Release Timeline
When each model was launched
Nemotron 3 Ultra (550B A55B) was released on 2026-06-04, while Sakana Namazu was released on 2026-08-03.
Sakana Namazu is 2 months newer than Nemotron 3 Ultra (550B A55B).
Jun 4, 2026
2 months ago
Aug 3, 2026
3 weeks ago
2mo newerKnowledge Cutoff
When training data ends
Nemotron 3 Ultra (550B A55B) has a documented knowledge cutoff of 2025-09-30, while Sakana Namazu'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 Sakana Namazu's cutoff date.
Sep 2025
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Outputs Comparison
Judge for yourself.
Run your own prompts against Nemotron 3 Ultra (550B A55B) and Sakana Namazu side-by-side, then vote on the output you prefer.
FAQ
Common questions about Nemotron 3 Ultra (550B A55B) vs Sakana Namazu.