{"citations":{"source_mix":{"company_owned":14,"independent":23,"unclear":0},"sources_referenced_by_questions":0,"support_mix":{"direct":24,"partial":11},"total_sources":37,"unique_domain_count":28},"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","grok","kimi","openai","perplexity"],"predicate":"final_consensus_rank","qualifier":"Curved & Multi-Landing Staircases","subject":"Harmar Helix CSL500","unit":"rank","value":2},{"claim_id":"claim-003","confidence":"verified","observed_at":"2026-09-26","platform_support":["anthropic","deepseek","google","grok","kimi","openai","perplexity"],"predicate":"platform_mentions","qualifier":"out of 7","subject":"Harmar Helix CSL500","unit":"platforms","value":7},{"claim_id":"claim-004","confidence":"verified","observed_at":"2026-09-26","platform_support":["anthropic","grok","google"],"predicate":"fit_rating_count","qualifier":"strong","subject":"Harmar Helix CSL500","unit":"platforms","value":3},{"claim_id":"claim-005","confidence":"verified","observed_at":"2026-09-26","platform_support":["openai","deepseek","perplexity"],"predicate":"fit_rating_count","qualifier":"good","subject":"Harmar Helix CSL500","unit":"platforms","value":3},{"claim_id":"claim-006","confidence":"verified","observed_at":"2026-09-26","platform_support":["kimi"],"predicate":"fit_rating_count","qualifier":"uncertain","subject":"Harmar Helix CSL500","unit":"platforms","value":1}],"content_scope":"aggregated facts, computed metrics, and retrieval summaries","entities":[{"average_rank":4.428571428571429,"best_rank":1,"entity_id":"entity-001","entity_type":"company","final_rank":2,"name":"Harmar Helix CSL500","platform_mentions":7,"platform_share":1}],"identity":{"dataset_url":"https://aginginplaceindex.com/datasets/stairlifts/curved-multi-landing-staircases/harmar-helix-csl500.json","page_url":"https://aginginplaceindex.com/stairlifts/curved-multi-landing-staircases/harmar-helix-csl500","report_type":"fit_review","study_id":"AIPI-STUDY-3FA601CBFFED","title":"Harmar Helix CSL500 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.","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":"2026-09-26 10:06:08.003124+00","research_date":"2026-09-26","source_snapshot_sha256":"cd631bb20a231466f494ab296e22d8f40c164e6b469a51943a808197faa354e1","verification_scope":"public_verification"},"ranking":{"candidates_evaluated":22,"qualified_finalists":6,"ranking_unit":"Custom stairlift model and manufacturer"},"schema_version":4,"summary":"The Harmar Helix CSL500 is generally a good fit for U.S. homeowners with genuinely complex curved, spiral, or multi-landing staircases who need a custom-fabricated rail and can work through an authorized dealer. All 7 platforms in this study named it during the ranking stage — a 100% share of included platform responses — with an average listed rank of 4.43 and a best rank of 1. The strongest reason to consider it is purpose-built custom rail engineering for turns, landings, and long multi-flight runs. The main limitation is that final suitability, price, lead time, and spiral compatibility…","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"}}