{
  "method": "gpt-tokenizer 4.1.0, o200k_base, UTF-8 strings, no trailing newline, payload only, no model calls",
  "rows": 40,
  "counts": {
    "pretty JSON": 1289,
    "compact JSON": 685,
    "CSV (table only)": 286,
    "TOON": 371
  },
  "samples": {
    "pretty JSON": "{\n  \"users\": [\n    {\n      \"id\": 1,\n      \"name\": \"user1\",\n      \"team\": \"support\",\n      \"active\": false\n    },\n    {\n      \"id\": 2,\n      \"name\": \"user2\",\n      \"team\": \"sales\",\n      \"active\": true\n    },\n    {\n      \"id\": 3,\n      \"name\": \"user3\",\n      \"team\": \"support\",\n      \"active\": true\n    },\n    {\n      \"id\": 4,\n      \"name\": \"user4\",\n      \"team\": \"sales\",\n      \"active\": false\n    },\n    {\n      \"id\": 5,\n      \"name\": \"user5\",\n      \"team\": \"support\",\n      \"active\": true\n    },\n    {\n      \"id\": 6,\n      \"name\": \"user6\",\n      \"team\": \"sales\",\n      \"active\": true\n    },\n    {\n      \"id\": 7,\n      \"name\": \"user7\",\n      \"team\": \"support\",\n      \"active\": false\n    },\n    {\n      \"id\": 8,\n      \"name\": \"user8\",\n      \"team\": \"sales\",\n      \"active\": true\n    },\n    {\n      \"id\": 9,\n      \"name\": \"user9\",\n      \"team\": \"support\",\n      \"active\": true\n    },\n    {\n      \"id\": 10,\n      \"name\": \"user10\",\n      \"team\": \"sales\",\n      \"active\": false\n    },\n    {\n      \"id\": 11,\n      \"name\": \"user11\",\n      \"team\": \"support\",\n      \"active\": true\n    },\n    {\n      \"id\": 12,\n      \"name\": \"user12\",\n      \"team\": \"sales\",\n      \"active\": true\n    },\n    {\n      \"id\": 13,\n      \"name\": \"user13\",\n      \"team\": \"support\",\n      \"active\": false\n    },\n    {\n      \"id\": 14,\n      \"name\": \"user14\",\n      \"team\": \"sales\",\n      \"active\": true\n    },\n    {\n      \"id\": 15,\n      \"name\": \"user15\",\n      \"team\": \"support\",\n      \"active\": true\n    },\n    {\n      \"id\": 16,\n      \"name\": \"user16\",\n      \"team\": \"sales\",\n      \"active\": false\n    },\n    {\n      \"id\": 17,\n      \"name\": \"user17\",\n      \"team\": \"support\",\n      \"active\": true\n    },\n    {\n      \"id\": 18,\n      \"name\": \"user18\",\n      \"team\": \"sales\",\n      \"active\": true\n    },\n    {\n      \"id\": 19,\n      \"name\": \"user19\",\n      \"team\": \"support\",\n      \"active\": false\n    },\n    {\n      \"id\": 20,\n      \"name\": \"user20\",\n      \"team\": \"sales\",\n      \"active\": true\n    },\n    {\n      \"id\": 21,\n      \"name\": \"user21\",\n      \"team\": \"support\",\n      \"active\": true\n    },\n    {\n      \"id\": 22,\n      \"name\": \"user22\",\n      \"team\": \"sales\",\n      \"active\": false\n    },\n    {\n      \"id\": 23,\n      \"name\": \"user23\",\n      \"team\": \"support\",\n      \"active\": true\n    },\n    {\n      \"id\": 24,\n      \"name\": \"user24\",\n      \"team\": \"sales\",\n      \"active\": true\n    },\n    {\n      \"id\": 25,\n      \"name\": \"user25\",\n      \"team\": \"support\",\n      \"active\": false\n    },\n    {\n      \"id\": 26,\n      \"name\": \"user26\",\n      \"team\": \"sales\",\n      \"active\": true\n    },\n    {\n      \"id\": 27,\n      \"name\": \"user27\",\n      \"team\": \"support\",\n      \"active\": true\n    },\n    {\n      \"id\": 28,\n      \"name\": \"user28\",\n      \"team\": \"sales\",\n      \"active\": false\n    },\n    {\n      \"id\": 29,\n      \"name\": \"user29\",\n      \"team\": \"support\",\n      \"active\": true\n    },\n    {\n      \"id\": 30,\n      \"name\": \"user30\",\n      \"team\": \"sales\",\n      \"active\": true\n    },\n    {\n      \"id\": 31,\n      \"name\": \"user31\",\n      \"team\": \"support\",\n      \"active\": false\n    },\n    {\n      \"id\": 32,\n      \"name\": \"user32\",\n      \"team\": \"sales\",\n      \"active\": true\n    },\n    {\n      \"id\": 33,\n      \"name\": \"user33\",\n      \"team\": \"support\",\n      \"active\": true\n    },\n    {\n      \"id\": 34,\n      \"name\": \"user34\",\n      \"team\": \"sales\",\n      \"active\": false\n    },\n    {\n      \"id\": 35,\n      \"name\": \"user35\",\n      \"team\": \"support\",\n      \"active\": true\n    },\n    {\n      \"id\": 36,\n      \"name\": \"user36\",\n      \"team\": \"sales\",\n      \"active\": true\n    },\n    {\n      \"id\": 37,\n      \"name\": \"user37\",\n      \"team\": \"support\",\n      \"active\": false\n    },\n    {\n      \"id\": 38,\n      \"name\": \"user38\",\n      \"team\": \"sales\",\n      \"active\": true\n    },\n    {\n      \"id\": 39,\n      \"name\": \"user39\",\n      \"team\": \"support\",\n      \"active\": true\n    },\n    {\n      \"id\": 40,\n      \"name\": \"user40\",\n      \"team\": \"sales\",\n      \"active\": false\n    }\n  ]\n}",
    "compact JSON": "{\"users\":[{\"id\":1,\"name\":\"user1\",\"team\":\"support\",\"active\":false},{\"id\":2,\"name\":\"user2\",\"team\":\"sales\",\"active\":true},{\"id\":3,\"name\":\"user3\",\"team\":\"support\",\"active\":true},{\"id\":4,\"name\":\"user4\",\"team\":\"sales\",\"active\":false},{\"id\":5,\"name\":\"user5\",\"team\":\"support\",\"active\":true},{\"id\":6,\"name\":\"user6\",\"team\":\"sales\",\"active\":true},{\"id\":7,\"name\":\"user7\",\"team\":\"support\",\"active\":false},{\"id\":8,\"name\":\"user8\",\"team\":\"sales\",\"active\":true},{\"id\":9,\"name\":\"user9\",\"team\":\"support\",\"active\":true},{\"id\":10,\"name\":\"user10\",\"team\":\"sales\",\"active\":false},{\"id\":11,\"name\":\"user11\",\"team\":\"support\",\"active\":true},{\"id\":12,\"name\":\"user12\",\"team\":\"sales\",\"active\":true},{\"id\":13,\"name\":\"user13\",\"team\":\"support\",\"active\":false},{\"id\":14,\"name\":\"user14\",\"team\":\"sales\",\"active\":true},{\"id\":15,\"name\":\"user15\",\"team\":\"support\",\"active\":true},{\"id\":16,\"name\":\"user16\",\"team\":\"sales\",\"active\":false},{\"id\":17,\"name\":\"user17\",\"team\":\"support\",\"active\":true},{\"id\":18,\"name\":\"user18\",\"team\":\"sales\",\"active\":true},{\"id\":19,\"name\":\"user19\",\"team\":\"support\",\"active\":false},{\"id\":20,\"name\":\"user20\",\"team\":\"sales\",\"active\":true},{\"id\":21,\"name\":\"user21\",\"team\":\"support\",\"active\":true},{\"id\":22,\"name\":\"user22\",\"team\":\"sales\",\"active\":false},{\"id\":23,\"name\":\"user23\",\"team\":\"support\",\"active\":true},{\"id\":24,\"name\":\"user24\",\"team\":\"sales\",\"active\":true},{\"id\":25,\"name\":\"user25\",\"team\":\"support\",\"active\":false},{\"id\":26,\"name\":\"user26\",\"team\":\"sales\",\"active\":true},{\"id\":27,\"name\":\"user27\",\"team\":\"support\",\"active\":true},{\"id\":28,\"name\":\"user28\",\"team\":\"sales\",\"active\":false},{\"id\":29,\"name\":\"user29\",\"team\":\"support\",\"active\":true},{\"id\":30,\"name\":\"user30\",\"team\":\"sales\",\"active\":true},{\"id\":31,\"name\":\"user31\",\"team\":\"support\",\"active\":false},{\"id\":32,\"name\":\"user32\",\"team\":\"sales\",\"active\":true},{\"id\":33,\"name\":\"user33\",\"team\":\"support\",\"active\":true},{\"id\":34,\"name\":\"user34\",\"team\":\"sales\",\"active\":false},{\"id\":35,\"name\":\"user35\",\"team\":\"support\",\"active\":true},{\"id\":36,\"name\":\"user36\",\"team\":\"sales\",\"active\":true},{\"id\":37,\"name\":\"user37\",\"team\":\"support\",\"active\":false},{\"id\":38,\"name\":\"user38\",\"team\":\"sales\",\"active\":true},{\"id\":39,\"name\":\"user39\",\"team\":\"support\",\"active\":true},{\"id\":40,\"name\":\"user40\",\"team\":\"sales\",\"active\":false}]}",
    "CSV (table only)": "id,name,team,active\n1,user1,support,false\n2,user2,sales,true\n3,user3,support,true\n4,user4,sales,false\n5,user5,support,true\n6,user6,sales,true\n7,user7,support,false\n8,user8,sales,true\n9,user9,support,true\n10,user10,sales,false\n11,user11,support,true\n12,user12,sales,true\n13,user13,support,false\n14,user14,sales,true\n15,user15,support,true\n16,user16,sales,false\n17,user17,support,true\n18,user18,sales,true\n19,user19,support,false\n20,user20,sales,true\n21,user21,support,true\n22,user22,sales,false\n23,user23,support,true\n24,user24,sales,true\n25,user25,support,false\n26,user26,sales,true\n27,user27,support,true\n28,user28,sales,false\n29,user29,support,true\n30,user30,sales,true\n31,user31,support,false\n32,user32,sales,true\n33,user33,support,true\n34,user34,sales,false\n35,user35,support,true\n36,user36,sales,true\n37,user37,support,false\n38,user38,sales,true\n39,user39,support,true\n40,user40,sales,false",
    "TOON": "users[40]{id,name,team,active}:\n  1,user1,support,false\n  2,user2,sales,true\n  3,user3,support,true\n  4,user4,sales,false\n  5,user5,support,true\n  6,user6,sales,true\n  7,user7,support,false\n  8,user8,sales,true\n  9,user9,support,true\n  10,user10,sales,false\n  11,user11,support,true\n  12,user12,sales,true\n  13,user13,support,false\n  14,user14,sales,true\n  15,user15,support,true\n  16,user16,sales,false\n  17,user17,support,true\n  18,user18,sales,true\n  19,user19,support,false\n  20,user20,sales,true\n  21,user21,support,true\n  22,user22,sales,false\n  23,user23,support,true\n  24,user24,sales,true\n  25,user25,support,false\n  26,user26,sales,true\n  27,user27,support,true\n  28,user28,sales,false\n  29,user29,support,true\n  30,user30,sales,true\n  31,user31,support,false\n  32,user32,sales,true\n  33,user33,support,true\n  34,user34,sales,false\n  35,user35,support,true\n  36,user36,sales,true\n  37,user37,support,false\n  38,user38,sales,true\n  39,user39,support,true\n  40,user40,sales,false"
  },
  "limits": "Synthetic uniform data. CSV lacks the outer users object and external typing schema; compare token counts, not type-preserving roundtrip. TOON sample uses simple safe primitive fields. No output accuracy tested. Not a universal benchmark."
}