BAML
A typed prompting language that turns prompt engineering into schema engineering.
Overview
BAML, from BoundaryML, is an open-source domain-specific language for defining type-safe LLM functions with structured inputs and outputs. It compiles to client code in Python, TypeScript, Ruby, Go and more, with built-in streaming, retries and broad model support. Native VS Code and JetBrains tooling supports prompt development and testing.
Pricing
Pricing shown for reference only. These figures reflect RECATOOLS research as of 4 Jun 2026 and may be out of date or incomplete. This is not financial or purchasing advice — always confirm the current price on the provider’s official website before making any decision.
ASEAN Perspective
BAML in Southeast Asia
ASEAN-region availability and pricing notes coming soon. Drop the editorial team a note via /contact/ if you can supply local context (Singapore/Malaysia/Indonesia/Thailand/Vietnam).
BAML takes an unusual but compelling approach: treat prompts as typed functions with schemas, generating reliable structured outputs even from models without native tool-calling. The IDE tooling and multi-language codegen make it practical for teams shipping LLM features rather than experimenting.
The language and tooling are open source and free, with paid options around the broader Boundary platform. Globally usable by ASEAN developers; documentation is English-only and there is no hosting or residency dimension since you run it locally.
About this listing
This entry was compiled from publicly available data including BAML's official website, press releases, documentation, and reputable third-party publications. RECATOOLS is not affiliated with BAML unless explicitly stated.
Third-party AI tools update their pricing, features, availability, and policies frequently. Information here may be outdated by the time you read this — we make reasonable efforts to keep listings current, but cannot guarantee absolute accuracy.
For the latest details, please refer to BAML directly →
Spotted something out of date? Suggest an update →
Alternatives to BAML
More in Code & Dev Tools