Dev.to
7/1/2026

ChatGPT Might Be Recommending Your Competitor, Not You — Here's How We Built a Tool to Check
Short summary
A developer built Relevyn to measure brand visibility across AI engines (ChatGPT, Claude, Perplexity, Gemini). The engineering requires handling unreliable APIs gracefully using Promise.allSettled, sequential requests, and deterministic detection (~$0.07/scan). Since AI outputs shift constantly, monitoring trends is more useful than one-time audits.
- •Brand visibility across LLM engines is unpredictable and worth monitoring continuously
- •Multi-API orchestration requires defensive patterns: Promise.allSettled, per-engine retry logic, and sequential processing to stay within serverless timeouts
- •Cost optimization matters: deterministic text detection beats LLM-based grading for 99% of cases
Generated with AI, which can make mistakes.
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