When Perplexity Sonar Pro Reported 37% Citation Errors: Real Lessons from Claude Sonnet 4.6 vs Opus 4.6 After Three Production Incidents

https://www.plurk.com/p/3iebywgt2n

Why a 37% Citation Error Claim Demands a Close Read Before You Change Your Stack Perplexity Sonar Pro flagged a 37% citation error rate on 2026-01-18 across a 500-query benchmark run