Runs as your own dedicated GPU deployment, ready to launch from the wizard. Data stays in Europe.
For more details on how to deploy and use the model - see the Quick Start Guide below!
Shared EU router, pay-per-token, scale-to-zero. Dedicated GPU deployments are billed hourly, see pricing.
Bench is our quality index for every model, 0 to 100. It rests on public measurements (Epoch AI with about 40 benchmarks, LiveBench, LMArena and more) and is refreshed every morning. Where nobody measures, it shows an estimate with a range.
Translated from its LiveBench result onto the same scale.
Range 63.8 to 76.4
Sources: Epoch AI ↗ · LiveBench ↗ · LMArena ↗ · Refreshed daily, last on 15-10-2026
Drop-in replacement for OpenAI: change only the base URL and API key. The Anthropic format (/v1/messages) is supported too.
curl https://hostyourai.com/api/v1/chat/completions \
-H "Authorization: Bearer hyai-..." \
-H "Content-Type: application/json" \
-d '{
"model": "nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B-NVFP4",
"messages": [{"role": "user", "content": "Hello!"}]
}'Yes. HostYourAI runs NVIDIA Nemotron 3 Ultra 550B A55B NVFP4 on GPUs in European datacenters via vLLM. Prompts and outputs never leave the EU and there is no US cloud provider in the chain.
Yes. All processing happens inside the EU, a Data Processing Agreement (DPA) is available and the subprocessor list is public. Open-source weights also mean: no training on your data.
NVIDIA Nemotron 3 Ultra 550B A55B NVFP4 is available on request: through the shared EU router after a quick chat, or as your own dedicated GPU deployment billed per hour. Tell us your use case and we will set it up for you.
Yes. You use the standard OpenAI SDKs with a custom base URL (https://hostyourai.com/api/v1). The Anthropic Messages API is supported as a drop-in as well.
Creating an account takes a minute. Test NVIDIA Nemotron 3 Ultra 550B A55B NVFP4 straight away in the playground.
Start for free