{"citations":{"source_mix":{"company_owned":16,"independent":11,"unclear":3},"sources_referenced_by_questions":0,"support_mix":{"direct":25,"partial":5},"total_sources":30,"unique_domain_count":19},"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":["google","kimi"],"predicate":"final_consensus_rank","qualifier":"Perching Seat for Tight Staircases","subject":"Harmar SL600 Pinnacle Premium","unit":"rank","value":5},{"claim_id":"claim-003","confidence":"verified","observed_at":"2026-09-27","platform_support":["google","kimi"],"predicate":"platform_mentions","qualifier":"out of 7","subject":"Harmar SL600 Pinnacle Premium","unit":"platforms","value":2},{"claim_id":"claim-004","confidence":"verified","observed_at":"2026-09-27","platform_support":["google"],"predicate":"fit_rating_count","qualifier":"good","subject":"Harmar SL600 Pinnacle Premium","unit":"platforms","value":1},{"claim_id":"claim-005","confidence":"verified","observed_at":"2026-09-27","platform_support":["anthropic","deepseek","perplexity"],"predicate":"fit_rating_count","qualifier":"mixed","subject":"Harmar SL600 Pinnacle Premium","unit":"platforms","value":3},{"claim_id":"claim-006","confidence":"verified","observed_at":"2026-09-27","platform_support":["openai","grok"],"predicate":"fit_rating_count","qualifier":"weak","subject":"Harmar SL600 Pinnacle Premium","unit":"platforms","value":2},{"claim_id":"claim-007","confidence":"verified","observed_at":"2026-09-27","platform_support":["kimi"],"predicate":"fit_rating_count","qualifier":"uncertain","subject":"Harmar SL600 Pinnacle Premium","unit":"platforms","value":1}],"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":5,"name":"Harmar SL600 Pinnacle Premium","platform_mentions":2,"platform_share":0.2857142857142857}],"identity":{"dataset_url":"https://aginginplaceindex.com/datasets/stairlifts/perching-seat-for-tight-staircases/harmar-sl600-pinnacle-premium.json","page_url":"https://aginginplaceindex.com/stairlifts/perching-seat-for-tight-staircases/harmar-sl600-pinnacle-premium","report_type":"fit_review","study_id":"AIPI-STUDY-18FBAF212274","title":"Harmar SL600 Pinnacle Premium 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.","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 14:33:44.791415+00","research_date":"2026-09-27","source_snapshot_sha256":"7589259c78645e193e6f31f61db1b8b1834053c8490744c4a957d61698e94faf","verification_scope":"public_verification"},"ranking":{"candidates_evaluated":8,"qualified_finalists":5,"ranking_unit":"Perch stairlift model and manufacturer"},"schema_version":4,"summary":"Harmar SL600 Pinnacle Premium is a weak fit for Perching Seat for Tight Staircases. Two of seven platforms named it during the ranking stage, at an average listed rank of 3.5. Its strongest reason to consider it is a documented 10.5-inch folded width — the narrowest folded profile any platform attributed to a seated stairlift — which preserves walking clearance on a straight, narrow staircase . The main limitation is categorical: every platform that examined the product concluded the SL600 is a conventional seated stairlift, and no reviewed source verifies a perch seat, perch angle, or…","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"}}