{
 "product": "YFarmX Model Identity",
 "method": "tokenizer fingerprinting v1-50",
 "updated": "2026-08-22",
 "record_url": "https://yfarmx.com/ai/models/nvidia/nemotron-3-ultra-550b-a55b-batch/",
 "citation": "YFarmX Model Identity: NVIDIA: Nemotron 3 Ultra (batch) (nvidia/nemotron-3-ultra-550b-a55b:batch) evidence record. https://yfarmx.com/ai/models/nvidia/nemotron-3-ultra-550b-a55b-batch/",
 "record": {
  "id": "nvidia/nemotron-3-ultra-550b-a55b:batch",
  "slug": "nvidia/nemotron-3-ultra-550b-a55b-batch",
  "name": "NVIDIA: Nemotron 3 Ultra (batch)",
  "lab": "NVIDIA",
  "alias": false,
  "variant_of": "nvidia/nemotron-3-ultra-550b-a55b",
  "created": 1780551208,
  "new_since_20_aug": false,
  "description": "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...",
  "declared": {
   "tokenizer": "Other",
   "modality": "text->text",
   "input": [
    "text"
   ],
   "context": 512288,
   "max_output": null,
   "pricing": {
    "prompt": "0.0000006",
    "completion": "0.0000036"
   },
   "params": [
    "frequency_penalty",
    "include_reasoning",
    "logit_bias",
    "max_tokens",
    "min_p",
    "presence_penalty",
    "reasoning",
    "reasoning_effort",
    "repetition_penalty",
    "response_format",
    "stop",
    "structured_outputs",
    "temperature",
    "tool_choice",
    "tools",
    "top_k",
    "top_p"
   ],
   "defaults": {
    "temperature": 1,
    "top_p": 0.95,
    "top_k": null,
    "frequency_penalty": null,
    "presence_penalty": null,
    "repetition_penalty": null
   },
   "reasoning": {
    "mandatory": false,
    "default_enabled": true,
    "supports_max_tokens": true,
    "supported_efforts": [
     "high",
     "medium"
    ],
    "default_effort": "high"
   },
   "hugging_face": "nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B-BF16"
  },
  "measurement": {
   "status": "excluded:variant"
  },
  "note": null,
  "api_signature": "api_d0c2ec50",
  "api_matches": [],
  "identity": {
   "kind": "lineage",
   "family": null,
   "confidence": "unknown",
   "confidence_reason": null,
   "basis": [],
   "contradiction": null,
   "declared_vs_measured": "unmeasurable"
  },
  "comparator": null,
  "neighbours": []
 }
}