The Agent Stack
Agents are designed to do almost any kind of work, from answering support tickets to writing code. No matter how complex the workload, how long it runs, or how many turns it takes to complete, every agent needs three core capabilities to operate:
Agents need to connect to models and route between them
Agents need to run workflows across many steps
Agents need to connect to the systems that make them useful and the platforms people use to interact with them
Implementing these capabilities to build a complete agent forces developers to choose between vendor lock-in with a single provider API, stitching together solutions, or building abstractions themselves.
The Agent Stack gives you all the building blocks you need to create and ship production-grade agents.
Agents don't run on a single model. Every task has a different cost, latency, and capability tradeoff, and the right call depends on what the agent is doing. It needs one interface to reach any of them, a way to route between them, and a way to stream back to the user.
AI SDK gives an agent one interface to call any model, and AI Gateway routes across hundreds of them from a single endpoint.