{
  "id": "needle-32k-d050",
  "kind": "haystacks",
  "subkind": "single",
  "version": "v1",
  "title": "Single needle, 32k tokens, 50% depth",
  "description": "About 32k tokens of almanac prose with one planted fact at 50% depth.",
  "language": "en",
  "tags": [
    "long-context",
    "needle-in-a-haystack",
    "32k",
    "depth-50"
  ],
  "world": null,
  "files": [
    {
      "name": "needle-32k-d050.txt",
      "url": "/fixtures/haystacks/needle-32k-d050/needle-32k-d050.txt",
      "media_type": "text/plain; charset=utf-8",
      "bytes": 128661,
      "sha256": "ac18ddb5ba0c5bc93e0e9fdcd6bc40b5cd6555075879ef30d837595394859032",
      "variant": "plain"
    }
  ],
  "answers_url": "/fixtures/haystacks/needle-32k-d050/answers",
  "size": "32k",
  "approx_tokens": 32165,
  "chars": 128661,
  "words": 22990,
  "lines": 533,
  "token_estimator": "approx_tokens = chars / 4 (plain English prose; real tokenizers give roughly 3.5 to 4.5 chars per token)",
  "needle_family": "access",
  "questions": [
    {
      "key": "access_code",
      "question": "What is the access code for the Brackenwick tide-gauge hut?"
    }
  ],
  "depth_target_percent": 50
}