inference.sh agents vs Vercel AI SDK

the key difference

Vercel AI SDK is a capable library. it handles streaming, tool calls, structured output, multi-step agents, and even connectors. if you're building LLM features in a Next.js app, it's a strong foundation.

the difference is what happens in production. Vercel AI SDK is a library: you import it, you manage the execution environment. inference.sh agents is a runtime: durable execution, automatic retries, state persistence, human-in-the-loop approval gates, and multi-channel delivery. your agent survives crashes, runs for hours, and delivers to slack or telegram without you building that infrastructure.

library vs runtime

Vercel AI SDK gives you the building blocks to write agent logic. inference.sh gives you the building blocks plus the production infrastructure to run it reliably. when your agent needs to survive a server restart, get human approval before a dangerous action, or run on a cron schedule at 3am, that's where the runtime matters.

the two work well together. Vercel AI SDK for the frontend streaming layer, inference.sh agents for the backend execution. different layers, complementary tools.