Blog
Thoughts on voice AI, engineering, and building in public.
Engineering
Designing hallucination test suites for production voice agents
How we built automated testing that catches risky responses before your users ever hear them.
Infrastructure
Sub-50ms voice: architecture behind our edge network
A deep dive into streaming pipelines, model routing, and regional inference clusters.
Product
Multilingual agents without the complexity
One agent, 100+ languages — how VAPI handles locale detection, routing, and fallback.
Product
A/B testing voice: prompts, voices, and flows
Continuous optimization strategies for teams running experiments at scale.