Nvidia Nemotron 3 Ultra 550B Thinking

nvidia/nemotron-3-ultra-550b-a55b:thinking

Nvidia's Nemotron 3 Ultra 550B A55B model from the Nemotron 3 family. It uses a hybrid Mamba-Transformer MoE architecture. Provider-specific context limits vary, with the longest current route supporting up to 1M context. Thinking enabled.

Reasoning
Tool calling

Chat with this model Create an API key

Pricing

Includes our margin. Charged per request from your balance.

Input: $0.55 per 1M tokens
Output: $2.75 per 1M tokens
Cache read: $0.165 per 1M tokens
Typical message: $0.0016

Details

Provider: NVIDIA
Context: 1M tokens
Max output: 66K tokens
Added: Jun 4, 2026

Use it from the API

Replace $HIDE_API_KEY with a key from the Developers page. Base URL https://hide.st/api/v1.

curl https://hide.st/api/v1/chat/completions \
  -H "Authorization: Bearer $HIDE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "nvidia/nemotron-3-ultra-550b-a55b:thinking",
    "messages": [
      {"role": "user", "content": "Hello!"}
    ]
  }'

Pricing

Details

Use it from the API

Search