{"citations":{"source_mix":{"company_owned":16,"independent":15,"unclear":0},"sources_referenced_by_questions":0,"support_mix":{"direct":23,"partial":8},"total_sources":31,"unique_domain_count":17},"claims":[{"claim_id":"claim-001","confidence":"verified","observed_at":"2026-09-25","platform_support":["anthropic","deepseek","google","grok","kimi","openai","perplexity"],"predicate":"platforms_analyzed","qualifier":"valid included platform responses","subject":"Best Stairlifts for Straight Stairs","unit":"platforms","value":7},{"claim_id":"claim-002","confidence":"verified","observed_at":"2026-09-25","platform_support":["anthropic","deepseek","google","grok","kimi","perplexity"],"predicate":"final_consensus_rank","qualifier":"Single-Flight Straight Staircases","subject":"Acorn 130","unit":"rank","value":2},{"claim_id":"claim-003","confidence":"verified","observed_at":"2026-09-25","platform_support":["anthropic","deepseek","google","grok","kimi","perplexity"],"predicate":"platform_mentions","qualifier":"out of 7","subject":"Acorn 130","unit":"platforms","value":6},{"claim_id":"claim-004","confidence":"verified","observed_at":"2026-09-25","platform_support":["anthropic","deepseek","grok","google"],"predicate":"fit_rating_count","qualifier":"strong","subject":"Acorn 130","unit":"platforms","value":4},{"claim_id":"claim-005","confidence":"verified","observed_at":"2026-09-25","platform_support":["openai","perplexity"],"predicate":"fit_rating_count","qualifier":"good","subject":"Acorn 130","unit":"platforms","value":2},{"claim_id":"claim-006","confidence":"verified","observed_at":"2026-09-25","platform_support":["kimi"],"predicate":"fit_rating_count","qualifier":"uncertain","subject":"Acorn 130","unit":"platforms","value":1}],"content_scope":"aggregated facts, computed metrics, and retrieval summaries","entities":[{"average_rank":3.5,"best_rank":2,"entity_id":"entity-001","entity_type":"company","final_rank":2,"name":"Acorn 130","platform_mentions":6,"platform_share":0.8571428571428571}],"identity":{"dataset_url":"https://aginginplaceindex.com/datasets/stairlifts/single-flight-straight-staircases/acorn-130.json","page_url":"https://aginginplaceindex.com/stairlifts/single-flight-straight-staircases/acorn-130","report_type":"fit_review","study_id":"AIPI-STUDY-7A0171211F2B","title":"Acorn 130 Review for Straight 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.","The deterministic identity audit contains qualification notes that must be disclosed where relevant.","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":"2026-09-25 15:32:02.751223+00","research_date":"2026-09-25","source_snapshot_sha256":"cdbdd88195cd8d1d035122773ab13acbfeaa687e020198322a6d45e89368e820","verification_scope":"public_verification"},"ranking":{"candidates_evaluated":12,"qualified_finalists":7,"ranking_unit":"Stairlift model and manufacturer"},"schema_version":4,"summary":"The Acorn 130 is a good fit for a single-flight straight staircase, with verification requirements. Six of the seven platforms that produced fit research named it during the ranking stage, and all six rated it a strong or good fit for this use case; one platform (kimi) returned no usable product data and rated it uncertain. The strongest reason to consider it is purpose-built straight-stair engineering: a tread-mounted rail, documented swivel-seat locking at 45 and 90 degrees, battery-backed operation, and installation claims of roughly one to two hours. The main limitation is disclosure,…","target_buyer":"Seniors with declining mobility living in two-story homes with straight, un-landed staircases","topic":{"base_category":"Stairlifts","category_criteria":["Standard rail fit","installation time","seat swivel and comfort","weight capacity","safety obstruction sensors","base equipment price"],"geography":"United States","slug":"best-stairlifts-for-straight-stairs","title":"Best Stairlifts for Straight Stairs","use_case":"Single-Flight Straight Staircases"}}