Case Study: Redfin builds a production-ready AI virtual assistant with Vellum

Redfin's Test Driven Development Approach to Building an AI Virtual Assistant

Redfin, a technology-powered real estate company, needed to build a production-ready AI virtual assistant for home-buyers but faced the challenge of ensuring its answers were accurate, fair, and reliable. They sought an AI development platform to facilitate a test-driven development approach. They chose Vellum to help them rigorously experiment with and evaluate different prompts and workflows before deployment.

Using Vellum's products for prompt engineering, workflow building, and systematic evaluations, Redfin implemented a complex, multi-step AI workflow. This solution enabled their team to prototype rapidly, test hundreds of scenarios, and optimize for cost and latency without sacrificing quality. As a result, Vellum gave Redfin the confidence to launch their "Ask Redfin" virtual assistant in beta across 14 U.S. markets, saving the company hundreds of hours in development time.

Redfin

Sebi Lozano

Senior Product Manager