{
 "product": "YFarmX Model Identity",
 "method": "tokenizer fingerprinting v1-50",
 "updated": "2026-08-22",
 "record_url": "https://yfarmx.com/ai/models/bytedance-seed/seed-1.6/",
 "citation": "YFarmX Model Identity: ByteDance Seed: Seed 1.6 (bytedance-seed/seed-1.6) evidence record. Measured 2026-08-21. https://yfarmx.com/ai/models/bytedance-seed/seed-1.6/",
 "record": {
  "id": "bytedance-seed/seed-1.6",
  "slug": "bytedance-seed/seed-1.6",
  "name": "ByteDance Seed: Seed 1.6",
  "lab": "ByteDance Seed",
  "alias": false,
  "variant_of": null,
  "created": 1766504997,
  "new_since_20_aug": false,
  "description": "Seed 1.6 is a general-purpose model released by the ByteDance Seed team. It incorporates multimodal capabilities and adaptive deep thinking with a 256K context window.",
  "declared": {
   "tokenizer": "Other",
   "modality": "text+image+video->text",
   "input": [
    "image",
    "text",
    "video"
   ],
   "context": 262144,
   "max_output": 32768,
   "pricing": {
    "prompt": "0.00000025",
    "completion": "0.000002"
   },
   "params": [
    "frequency_penalty",
    "include_reasoning",
    "max_tokens",
    "reasoning",
    "response_format",
    "stop",
    "structured_outputs",
    "temperature",
    "tool_choice",
    "tools",
    "top_p"
   ],
   "defaults": {
    "temperature": null,
    "top_p": null,
    "frequency_penalty": null
   },
   "reasoning": {
    "mandatory": false
   },
   "hugging_face": null
  },
  "measurement": {
   "status": "measured",
   "at": "2026-08-21",
   "run": "catalogue-sweep",
   "overhead": 80,
   "providers": [
    "Seed"
   ],
   "clean_rows": 50,
   "corrupt_rows": 0,
   "signature": "tk_25bf52d0",
   "counts": {
    "en-prose": 14,
    "en-long": 16,
    "spaces-20": 3,
    "spaces-60": 3,
    "tabs-20": 4,
    "newlines-20": 4,
    "mixed-ws": 7,
    "digits-9": 9,
    "digits-12": 12,
    "digits-30": 30,
    "digits-sep": 12,
    "float-long": 22,
    "zh-common": 11,
    "zh-long": 13,
    "zh-rare": 18,
    "ja-kana": 18,
    "ja-kanji": 13,
    "ko": 13,
    "ru": 13,
    "ar": 12,
    "he": 13,
    "hi": 17,
    "th": 16,
    "el": 14,
    "emoji-basic": 9,
    "emoji-skin": 14,
    "emoji-zwj-family": 11,
    "emoji-zwj-x3": 33,
    "emoji-flags": 16,
    "emoji-prof": 19,
    "math": 30,
    "boxdraw": 29,
    "combining": 5,
    "cjk-ext-b": 16,
    "surrogates": 41,
    "zalgo": 36,
    "rtl-mix": 6,
    "py-code": 26,
    "py-indent": 18,
    "json": 25,
    "html": 16,
    "regex": 50,
    "camel": 7,
    "snake": 8,
    "rare-word-x5": 31,
    "repeat-tok": 41,
    "base64": 33,
    "hex": 19,
    "url": 20,
    "uuid": 36
   },
   "corrupt": {},
   "observations": [
    {
     "at": "2026-08-21",
     "run": "catalogue-sweep",
     "clean": 50
    }
   ]
  },
  "note": null,
  "api_signature": "api_1e32a0a1",
  "api_matches": [
   "bytedance-seed/seed-1.6-flash"
  ],
  "identity": {
   "kind": "lineage",
   "family": "ByteDance Seed",
   "confidence": "very-high",
   "confidence_reason": "an exact fingerprint shared with 3 models and an identical API contract inside the same group: two signals of different kinds agree",
   "basis": [
    "exact tokenizer signature shared with 3 models",
    "API-surface contract identical to a group member"
   ],
   "contradiction": null,
   "declared_vs_measured": "resolved"
  },
  "comparator": "bytedance-seed/seed-2.0-lite",
  "neighbours": [
   {
    "id": "bytedance-seed/seed-1.6-flash",
    "same": 50,
    "total": 50
   },
   {
    "id": "bytedance-seed/seed-2.0-mini",
    "same": 50,
    "total": 50
   },
   {
    "id": "bytedance-seed/seed-2.0-lite",
    "same": 50,
    "total": 50
   },
   {
    "id": "qwen/qwen3.5-plus-20260420",
    "same": 13,
    "total": 27
   },
   {
    "id": "inclusionai/ling-3.0-flash",
    "same": 24,
    "total": 50
   },
   {
    "id": "inclusionai/ling-2.6-flash",
    "same": 24,
    "total": 50
   }
  ]
 }
}