{"citations":{"source_mix":{"company_owned":22,"independent":20,"unclear":0},"sources_referenced_by_questions":0,"support_mix":{"direct":29,"partial":10},"total_sources":42,"unique_domain_count":22},"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 Stairlifts for Basement Stairs","unit":"platforms","value":7},{"claim_id":"claim-002","confidence":"verified","observed_at":"2026-09-27","platform_support":["deepseek","openai","perplexity"],"predicate":"final_consensus_rank","qualifier":"Basement Access & Utility Stairs","subject":"Acorn 130 Straight Stairlift","unit":"rank","value":4},{"claim_id":"claim-003","confidence":"verified","observed_at":"2026-09-27","platform_support":["deepseek","openai","perplexity"],"predicate":"platform_mentions","qualifier":"out of 7","subject":"Acorn 130 Straight Stairlift","unit":"platforms","value":3},{"claim_id":"claim-004","confidence":"verified","observed_at":"2026-09-27","platform_support":["openai","deepseek","perplexity","google"],"predicate":"fit_rating_count","qualifier":"good","subject":"Acorn 130 Straight Stairlift","unit":"platforms","value":4},{"claim_id":"claim-005","confidence":"verified","observed_at":"2026-09-27","platform_support":["anthropic","grok","kimi"],"predicate":"fit_rating_count","qualifier":"mixed","subject":"Acorn 130 Straight Stairlift","unit":"platforms","value":3}],"content_scope":"aggregated facts, computed metrics, and retrieval summaries","entities":[{"average_rank":2.3333333333333335,"best_rank":2,"entity_id":"entity-001","entity_type":"company","final_rank":4,"name":"Acorn 130 Straight Stairlift","platform_mentions":3,"platform_share":0.42857142857142855}],"identity":{"dataset_url":"https://aginginplaceindex.com/datasets/stairlifts/basement-access-utility-stairs/acorn-130-straight-stairlift.json","page_url":"https://aginginplaceindex.com/stairlifts/basement-access-utility-stairs/acorn-130-straight-stairlift","report_type":"fit_review","study_id":"AIPI-STUDY-8D0CAC9E59C9","title":"Acorn 130 Straight Stairlift Review for Basement 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.","Company-owned citations materially outnumber independent citations; do not describe company claims as independently verified.","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 20:49:24.216976+00","research_date":"2026-09-27","source_snapshot_sha256":"e2245f3af86d43c3307ae6572c04e17c1c94565ee8c78f883268c906598ee3a9","verification_scope":"public_verification"},"ranking":{"candidates_evaluated":16,"qualified_finalists":6,"ranking_unit":"Stairlift model and manufacturer"},"schema_version":4,"summary":"The Acorn 130 Straight Stairlift is a good fit for a dry, indoor basement with one straight stair flight and adequate landing and headroom clearance. Three of seven platforms named it during the ranking stage, at an average listed rank of 2.33 and a best rank of 2. Its strongest case rests on straight-stair compatibility, tread-mounted rail installation, obstruction detection, battery operation, and an optional hinged rail for doorway obstructions. The main limitation is that Acorn does not publish a maximum stair pitch, a low-ceiling clearance calculation, or a moisture or damp-environment…","target_buyer":"Seniors who need safe access to laundry rooms, storage areas, workshops, or living spaces located below the main floor","topic":{"base_category":"Stairlifts","category_criteria":["Rail fit on steep stairs","low-ceiling clearance","damp-environment durability","obstruction sensors","seat belt comfort","battery backup","service access","installation price"],"geography":"United States","slug":"best-stairlifts-for-basement-stairs","title":"Best Stairlifts for Basement Stairs","use_case":"Basement Access & Utility Stairs"}}