{"citations":{"source_mix":{"company_owned":14,"independent":15,"unclear":1},"sources_referenced_by_questions":0,"support_mix":{"direct":21,"partial":9},"total_sources":30,"unique_domain_count":19},"claims":[{"claim_id":"claim-001","confidence":"verified","observed_at":"2026-09-26","platform_support":["anthropic","deepseek","google","grok","kimi","openai","perplexity"],"predicate":"platforms_analyzed","qualifier":"valid included platform responses","subject":"Best Stairlifts for Curved Stairs","unit":"platforms","value":7},{"claim_id":"claim-002","confidence":"verified","observed_at":"2026-09-26","platform_support":["anthropic","deepseek","google","openai"],"predicate":"final_consensus_rank","qualifier":"Curved & Multi-Landing Staircases","subject":"Acorn 180","unit":"rank","value":6},{"claim_id":"claim-003","confidence":"verified","observed_at":"2026-09-26","platform_support":["anthropic","deepseek","google","openai"],"predicate":"platform_mentions","qualifier":"out of 7","subject":"Acorn 180","unit":"platforms","value":4},{"claim_id":"claim-004","confidence":"verified","observed_at":"2026-09-26","platform_support":["grok"],"predicate":"fit_rating_count","qualifier":"strong","subject":"Acorn 180","unit":"platforms","value":1},{"claim_id":"claim-005","confidence":"verified","observed_at":"2026-09-26","platform_support":["openai","anthropic","perplexity","kimi","google"],"predicate":"fit_rating_count","qualifier":"good","subject":"Acorn 180","unit":"platforms","value":5},{"claim_id":"claim-006","confidence":"verified","observed_at":"2026-09-26","platform_support":["deepseek"],"predicate":"fit_rating_count","qualifier":"mixed","subject":"Acorn 180","unit":"platforms","value":1}],"content_scope":"aggregated facts, computed metrics, and retrieval summaries","entities":[{"average_rank":4.75,"best_rank":2,"entity_id":"entity-001","entity_type":"company","final_rank":6,"name":"Acorn 180","platform_mentions":4,"platform_share":0.5714285714285714}],"identity":{"dataset_url":"https://aginginplaceindex.com/datasets/stairlifts/curved-multi-landing-staircases/acorn-180.json","page_url":"https://aginginplaceindex.com/stairlifts/curved-multi-landing-staircases/acorn-180","report_type":"fit_review","study_id":"AIPI-STUDY-E3568B692956","title":"Acorn 180 Review for Curved 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":"2026-09-26 10:10:13.589992+00","research_date":"2026-09-26","source_snapshot_sha256":"9a8365d629002f4139e579a9f99d05565b0fc8306c490390aa0671cf613c2ee4","verification_scope":"public_verification"},"ranking":{"candidates_evaluated":22,"qualified_finalists":6,"ranking_unit":"Custom stairlift model and manufacturer"},"schema_version":4,"summary":"Acorn 180 is a good, but not unequivocally strong, fit for U.S. homeowners with curved and multi-landing staircases. Four of seven platforms named it during ranking discovery, at an average listed rank of 4.75 and a best rank of 2. Its strongest differentiator is the FastTrack modular rail system, which Acorn says is assembled on site and can shorten installation timelines versus factory-manufactured bespoke rails . The main limitation is that modular adaptation may not match fully bespoke engineering for unusually tight spiral or compound-curve layouts, and installed pricing, warranty…","target_buyer":"Homeowners with complex, spiral, or intermediate-landing staircases requiring custom rail engineering","topic":{"base_category":"Stairlifts","category_criteria":["Custom rail measurement precision","ride smoothness","turn radius fit","park/charge point customization","lead time","total installed cost"],"geography":"United States","slug":"best-stairlifts-for-curved-stairs","title":"Best Stairlifts for Curved Stairs","use_case":"Curved & Multi-Landing Staircases"}}