This model runs as a dedicated deployment on large GPUs and isn't in the shared playground by default. Get in touch and we'll set it up for you.
For more details on how to deploy and use the model - see the Quick Start Guide below!
This model needs 423 GB of VRAM, so several GPUs. That makes the shared router rate high. From roughly 50 million tokens a month a dedicated deployment costs less.
Shared EU router, pay-per-token, scale-to-zero. Dedicated GPU deployments are billed hourly, see pricing.
Not available on the shared router. Pricing on request as a dedicated GPU deployment.
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.
Via the shared EU router you pay €1.20 per million input tokens and €3.40 per million output tokens, with no fixed costs. For high volume or isolation you can also run NVIDIA Nemotron 3 Ultra 550B A55B NVFP4 as a dedicated hourly GPU instance.
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.
NVIDIA Nemotron 3 Ultra 550B A55B NVFP4 isn't available by default yet. Leave your details and we'll arrange a dedicated deployment.
Request access