Nemotron 3 Ultra (free)on Krater.ai
NVIDIA Nemotron 3 Ultra is an open frontier-reasoning and orchestration model from NVIDIA, with 55B active parameters out of 550B total (MoE). Built on a hybrid Transformer-Mamba mixture-of-experts architecture, it
Released June 4, 2026
Specifications
Nemotron 3 Ultra (free) at a glance
Context
1M tokens
Max output
65.5K tokens
Input
Text
Output
Text
Input price
$0.0000 / 1M
Output price
$0.0000 / 1M
Capabilities
What it is good at
Catalog capabilities
- Generates text responses
- Supports tool calling
Good for
Benchmarks
Catalog data, not Krater benchmarks.
Coding index score
49.3
Agentic index score
27.5
Intelligence index score
38.3
Design Arena svg rank
#54
Design Arena asciiart rank
#55
Compare
Compare Nemotron 3 Ultra (free)
Nemotron 3 Ultra (free) vs Nemotron 3.5 Lightning
Nemotron 3.5 Lightning is an open mixture-of-experts model from NVIDIA, with 3B active parameters out of 30B total.
Open comparisonNemotron 3 Ultra (free) vs Nemotron 3.5 Lightning (free)
Nemotron 3.5 Lightning is an open mixture-of-experts model from NVIDIA, with 3B active parameters out of 30B total.
Open comparisonNemotron 3 Ultra (free) vs Nemotron 3 Nano 30B A3B
Nemotron 3 Nano 30B A3B is a small language MoE model with highest compute efficiency and accuracy for developers to build specialized agentic AI systems. The model is fully
Open comparisonFAQ
Questions about Nemotron 3 Ultra (free)
Clear answers based on the model catalog and Krater access.
Use Nemotron 3 Ultra (free) in your API
Connect with Krater's unified API.
Ready to use Nemotron 3 Ultra (free)?
Access leading models in one focused workspace.