Nemotron 3 Ultra 550B A55B

Models

Model details

Model
nvidia/nemotron-3-ultra-550b-a55b
Provider
together
API
openai-completions
Base URL
https://api.together.ai/v1
Input
text
Reasoning
Yes
Context window
512,300
Max tokens
512,300
Cost / million input
$0.6
Cost / million output
$3.6
Cost / million cache read
$0.2
Cost / million cache write
$0

Also available from other providers

Model config JSON
{
  "providers": {
    "together": {
      "apiKey": "YOUR_API_KEY",
      "models": [
        {
          "id": "nvidia/nemotron-3-ultra-550b-a55b",
          "name": "Nemotron 3 Ultra 550B A55B",
          "reasoning": true,
          "input": [
            "text"
          ],
          "contextWindow": 512300,
          "maxTokens": 512300,
          "cost": {
            "input": 0.6,
            "output": 3.6,
            "cacheRead": 0.2,
            "cacheWrite": 0
          },
          "compat": {
            "supportsStore": false,
            "supportsDeveloperRole": false,
            "supportsReasoningEffort": false,
            "maxTokensField": "max_tokens",
            "supportsStrictMode": false,
            "supportsLongCacheRetention": false,
            "thinkingFormat": "together"
          }
        }
      ],
      "api": "openai-completions",
      "baseUrl": "https://api.together.ai/v1"
    }
  }
}