360 billion tokens, 3 million customers, 6 engineers
360 billion tokens. 6 engineers. No DevOps team. Here's how Durable rebuilt their entire AI platform in a day and now ships agents to 3M businesses on Vercel.
Why it matters
Durable's migration to Vercel demonstrates a fundamental shift in how AI-native startups operate: consolidating multi-tenant infrastructure into a single platform lets tiny teams achieve massive scale and ship AI features faster than larger competitors. The 3-4x cost reduction and ability to deploy new agents daily shows the practical business impact of infrastructure-as-a-service for agent-driven products.
The key facts
10 to know360 billion tokens served annually (1.1B per day)
3 million business customers across Durable platform
6-person engineering team with zero dedicated DevOps staff
100x leverage per engineer claimed by founder
3-4x lower infrastructure cost vs. self-hosting
Ships new production agents to customers in single day
Complete platform rewrite completed using coding agents to accelerate migration
Full stack now runs on Vercel (Next.js, AI SDK, AI Gateway, Workflows, Functions)
Multi-tenant architecture handling wildly variable AI workloads and traffic patterns (100x variance between customer sites)
Uses model orchestration for quick switching between providers without rewriting system
Go to the source
Vercel Blogvercel.com
Publisher excerpt: Impact at a glance Infra is hard; multi-tenant infra is harder The migration, and why it worked 10x leverage to support more entrepreneurs Durable ships new production agents to customers in a single day AI features and agents serve ~1.1B tokens per day (360B per year) 10x leverage for every…