{
    "schema_version": "visibility-case-snapshot/v1",
    "published_at": "2026-10-20",
    "case_study": "https://www.aisymantix.com/case-studies/seo-datasets-ai-discovery/",
    "scope": "Published research · Crawler discovery",
    "measurement_note": "Historical observations from the original October 11 study. Before: September 6 through 22, 2026; after: September 23 through October 10, 2026. The windows have different lengths. BellyUp! sites were excluded from this comparison. Counts measure distinct sites with recorded catalog requests, not AI citations or a proven effect of the rollout.",
    "table": {
        "caption": "Distinct sites with catalog requests before and after the September 23 Dataset rollout",
        "columns": [
            "Crawler",
            "Before rollout",
            "After rollout",
            "Change"
        ],
        "rows": [
            [
                "OAI-SearchBot",
                "11 sites",
                "43 sites",
                "+32 sites"
            ],
            [
                "GPTBot",
                "54 sites",
                "87 sites",
                "+33 sites"
            ],
            [
                "Meta",
                "3 sites",
                "19 sites",
                "+16 sites"
            ]
        ]
    },
    "source_data": {
        "original_snapshot": "/data/research/seo-datasets-ai-search-visibility.json",
        "warehouse_event": 1696,
        "before_start": "2026-09-06",
        "before_end": "2026-09-22",
        "after_start": "2026-09-23",
        "after_end": "2026-10-10",
        "excluded_family": "BellyUp!",
        "distinct_catalog_sites": [
            {
                "crawler": "OAI-SearchBot",
                "before": 11,
                "after": 43
            },
            {
                "crawler": "GPTBot",
                "before": 54,
                "after": 87
            },
            {
                "crawler": "Meta",
                "before": 3,
                "after": 19
            }
        ]
    }
}