ToolsMarch 18, 2026via Vercel Blog
360 billion tokens, 3 million customers, 6 engineers
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.
Key signals
- 360 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
The hook
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.
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 engi…