# BAML vs Vercel AI SDK — Fit & Features

Canonical: https://trutool.co/compare/baml-vs-vercel-ai-sdk
Author: Snehil (https://trutool.co/authors/snehil)

Compare BAML and Vercel AI SDK by use case, features, limitations, and evaluation questions.

## Compare fit, features, and limitations

### BAML
Define typed LLM functions and test prompts with a dedicated language.
Best fit: Developers composing agents, structured model outputs, and tool workflows.
- Typed LLM functions
- Prompt testing
- Code generation
Before you choose: Check licensing, provider compatibility, maintenance, and tool permissions. Test failure recovery before enabling agent actions.
Pricing: https://docs.boundaryml.com/home
- [Read BAML profile](https://trutool.co/tools/baml): Read BAML profile

### Vercel AI SDK
A unified TypeScript SDK for building AI apps with modern streaming, fallbacks, and multi-model support—powered by Vercel.
Best fit: People and teams evaluating ai agent frameworks for a specific workflow.
- Core product workflow
Before you choose: Test a representative task, inspect outputs, and confirm integrations, permissions, data handling, licensing, and current costs.
Pricing: https://ai-sdk.dev/
- [Read Vercel AI SDK profile](https://trutool.co/tools/vercel-ai-sdk): Read Vercel AI SDK profile