{"citations":{"source_mix":{"company_owned":13,"independent":26,"unclear":3},"sources_referenced_by_questions":0,"support_mix":{"direct":28,"partial":14},"total_sources":42,"unique_domain_count":31},"claims":[{"claim_id":"claim-001","confidence":"verified","observed_at":"2026-09-27","platform_support":["anthropic","deepseek","google","grok","kimi","openai","perplexity"],"predicate":"platforms_analyzed","qualifier":"valid included platform responses","subject":"Best Perch Stairlifts for Narrow Stairs","unit":"platforms","value":7},{"claim_id":"claim-002","confidence":"verified","observed_at":"2026-09-27","platform_support":["deepseek","kimi"],"predicate":"final_consensus_rank","qualifier":"Perching Seat for Tight Staircases","subject":"Bruno Elan Perch Stairlift","unit":"rank","value":4},{"claim_id":"claim-003","confidence":"verified","observed_at":"2026-09-27","platform_support":["deepseek","kimi"],"predicate":"platform_mentions","qualifier":"out of 7","subject":"Bruno Elan Perch Stairlift","unit":"platforms","value":2},{"claim_id":"claim-004","confidence":"verified","observed_at":"2026-09-27","platform_support":["grok"],"predicate":"fit_rating_count","qualifier":"good","subject":"Bruno Elan Perch Stairlift","unit":"platforms","value":1},{"claim_id":"claim-005","confidence":"verified","observed_at":"2026-09-27","platform_support":["deepseek","perplexity","google"],"predicate":"fit_rating_count","qualifier":"mixed","subject":"Bruno Elan Perch Stairlift","unit":"platforms","value":3},{"claim_id":"claim-006","confidence":"verified","observed_at":"2026-09-27","platform_support":["openai","anthropic","kimi"],"predicate":"fit_rating_count","qualifier":"uncertain","subject":"Bruno Elan Perch Stairlift","unit":"platforms","value":3}],"content_scope":"aggregated facts, computed metrics, and retrieval summaries","entities":[{"average_rank":3.5,"best_rank":3,"entity_id":"entity-001","entity_type":"company","final_rank":4,"name":"Bruno Elan Perch Stairlift","platform_mentions":2,"platform_share":0.2857142857142857}],"identity":{"dataset_url":"https://aginginplaceindex.com/datasets/stairlifts/perching-seat-for-tight-staircases/bruno-elan-perch-stairlift.json","page_url":"https://aginginplaceindex.com/stairlifts/perching-seat-for-tight-staircases/bruno-elan-perch-stairlift","report_type":"fit_review","study_id":"AIPI-STUDY-8EDCE36DF665","title":"Bruno Elan Perch Stairlift Review for Narrow Stairs"},"limitations":["Use the run researchdate as the study date. Platform-reported dates are provenance metadata and do not independently prove freshness.","All included platforms evaluated fit, but platformmentions counts only platforms that named the entity during ranking discovery.","Do not resolve conflicting product names, pricing, or capabilities by guessing; describe the conflict and tell buyers what to verify.","The supplied URLs were collected from platform responses and were not independently validated by the writer stage.","Platform-reported research dates differ from the authoritative run date; disclose this as a methodology limitation.","Citations are platform-reported evidence, not independently verified facts. No-search model claims require explicit verification before being described as current facts."],"methodology":{"fit_rating_contract":["strong","good","mixed","weak","uncertain"],"included_valid_platform_count":7,"maximum_finalists":10,"minimum_mentions":2,"name":"Aging in Place Index cross-platform AI consensus analysis","platforms_included":["anthropic","deepseek","google","grok","kimi","openai","perplexity"],"platforms_queried":["openai","anthropic","deepseek","grok","perplexity","kimi","google"],"stages":["ranking_discovery","fit_assessment","normalization","editorial_synthesis"],"version":"alias-table-1"},"provenance":{"generated_at":"2026-09-27 14:36:44.700955+00","research_date":"2026-09-27","source_snapshot_sha256":"2c5ffbd5030e70f91e97b50ed3b1fb0f8aff3b7f0e4b5eae4a957e8111da2470","verification_scope":"public_verification"},"ranking":{"candidates_evaluated":8,"qualified_finalists":5,"ranking_unit":"Perch stairlift model and manufacturer"},"schema_version":4,"summary":"The Bruno Elan Perch Stairlift is an uncertain fit for a perching seat on tight staircases. Only 2 of 7 platforms named it during the ranking stage, and no reviewed source confirms that Bruno sells a perch-seat configuration for the Elan or the legacy SRE-1550. The strongest reason to consider it is the standard Elan's genuinely narrow profile: a vertical rail that mounts within about 5 inches of the wall and a folded width reported between roughly 11.25 and 12.5 inches. The main limitation is that every perch-specific specification — seat angle, minimum width with a perch seat, knee…","target_buyer":"Homeowners with narrow staircases where a traditional seated stairlift would block access or create clearance issues","topic":{"base_category":"Stairlifts","category_criteria":["Minimum staircase width","perch seat angle","folded footprint","rail profile","knee clearance","swivel/parking options","safety sensors","installation requirements"],"geography":"United States","slug":"best-perch-stairlifts-for-narrow-stairs","title":"Best Perch Stairlifts for Narrow Stairs","use_case":"Perching Seat for Tight Staircases"}}