AI Prompt Tester (Freelance) | Self-Employed / Upwork
Freelance AI Prompt Tester designing and testing prompt variations for LLMs to assess output quality across industries. The work involved structured prompt evaluation using iterative experimentation to quantify improvements and client-ready results. The role supported downstream content generation by validating prompt effectiveness before delivery. • Designed and tested 200+ prompts for ChatGPT and Claude • Improved model output quality by 35% via iterative refinement and A/B testing • Produced AI-generated content reports for 10+ clients while maintaining high satisfaction • Documented prompt libraries and best practices to reduce revision cycles