Ryan Feigenbaum

Ryan Feigenbaum

Senior Developer Advocate at GrowthBook

Latest

AI Evals vs. A/B Testing: Why You Need Both to Ship GenAI

Stop relying on "vibe checks" to ship GenAI. While AI Evals answer "can the model do the job?", only A/B testing answers "do users care?" Discover how to combine offline evaluation with online experimentation to build a reliable pipeline for shipping LLM features.

· 9 min read

GrowthBook is Now Available on the Vercel Marketplace

Feature flags without the performance hit. GrowthBook's Vercel Marketplace integration syncs flags to Edge Config for zero-latency evaluation—finally, experimentation that doesn't slow down your app.

· 3 min read

What are Feature Flags?

Feature flags let you turn functionality on or off without deploying new code, enabling instant rollbacks and progressive rollouts that transform risky all-or-nothing releases into safe, controlled feature launches.

· 8 min read

Find Flags Faster with Search Filters

Flag name on the tip of your tongue? Use Search Filters to quickly find it, narrowing down flags by type, rule, status, and more.

· 1 min read

Want to give GrowthBook a try?

In under two minutes, GrowthBook can be set up and ready for feature flagging and A/B testing, whether you use our cloud or self-host.