A B Testing

This skill teaches comprehensive evaluation strategies for LLM applications, covering automated metrics (BLEU, ROUGE, BERTScore), human evaluation frameworks, LLM-as-Judge patterns using Claude, A/B testing with statistical analysis, and regression detection. It includes ready-to-use Python code examples and integrates with tools like LangSmith.

Form CRO is an expert guide for optimizing form completion rates and conversions. It provides best practices for lead capture forms, contact forms, demo requests, quote forms, and surveys, covering field optimization, layout design, error handling, mobile UX, trust elements, and A/B testing strategies.

Guides users through planning and documenting A/B tests with statistical rigor. Includes hypothesis frameworks, sample size reference tables, test design templates, and analysis checklists to ensure valid experimentation results.