Comparison
baml vs langchain
Verdict
Pick baml when baml is primarily Rust; langchain is Python; pick langchain when langchain is primarily Python; baml is Rust.
Markdown twin · baml alternatives · langchain alternatives
GraphCanon updated today
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Trust & integrity
| Signal | baml | langchain |
|---|---|---|
| Maintenance | Very active (0d since push) As of today · github_public_v1 | Very active (0d since push) As of 1d · github_public_v1 |
| Provenance | Not a fork · Organization account As of today · github_public_v1 | Not a fork · Organization account As of 1d · github_public_v1 |
| OSV dependency advisories | Published findings As of today · osv@v1 | No lockfile (source not queried) As of 4d · osv@v1 |
| deps.dev advisories | Not queried deps.dev@v1 | Not queried deps.dev@v1 |
| OpenSSF Scorecard | Not queried openssf-scorecard@v1 | Not queried openssf-scorecard@v1 |
Tagline
- baml
- The programming language for agents
- langchain
- The agent engineering platform.
Stars
- baml
- 8.5k
- langchain
- 142k
Forks
- baml
- 448
- langchain
- 24k
Open issues
- baml
- 274
- langchain
- 419
Language
- baml
- Rust
- langchain
- Python
Adopt for
- baml
- -
- langchain
- LangChain is an open-source platform designed specifically for building agents and applications that leverage large language models (LLMs). It provides a standard framework to develop interoperable components and connect
Persona
- baml
- -
- langchain
- -
Runtime
- baml
- -
- langchain
- -
License
- baml
- Apache-2.0
- langchain
- MIT License, allowing free use for both personal and commercial purposes under its stipulated terms.
Last pushed
- baml
- Jul 15, 2026
- langchain
- Jul 14, 2026
Categories
- baml
- AI Agents, Inference & Serving, LLM Frameworks
- langchain
- AI Agents, LLM Frameworks
Trust and health
Open issues (now)
- baml
- 274
- langchain
- 419
OSV dependency advisories
- baml
- Published findings
- langchain
- No lockfile (source not queried)
Full report
- baml
- Trust report
- langchain
- Trust report
Shared compatibility
- Python · baml: Python runtime · langchain: Python runtime
Choose baml if…
- baml is primarily Rust; langchain is Python.
- License: baml is Apache-2.0, langchain is MIT.
- Tags unique to baml: boundaryml, guardrails, llm, programming-language.
- Also covers Inference & Serving.
When NOT to use baml
- AI Agents: Don't use an agent loop when a deterministic workflow would do; agents add latency, cost, and non-determinism.
- Inference & Serving: Self-hosting rarely beats a hosted API on cost until you have steady, high-volume traffic.
- LLM Frameworks: Avoid a framework for a single prompt-and-retrieve call; the abstraction can cost more than it saves.
Choose langchain if…
- langchain is primarily Python; baml is Rust.
- License: langchain is MIT, baml is Apache-2.0.
- Pricing: LangChain itself is open-source and free to use. However, it might rely on paid services or premium models from external platforms like OpenAI..
- Tags unique to langchain: agents, ai-agents, anthropic, chatgpt.
- * When aiming to build complex AI-powered agents or applications requiring high-level capabilities like planning, subagent interaction, and file system operations.
When NOT to use langchain
- * When working on smaller, less complex projects where full-scale integration with sophisticated components is not necessary as LangChain's extensive features might introduce unnecessary complexity.
- * If you are primarily focused on JavaScript or TypeScript development as the primary focus of LangChain is Python. Although there is a JS/TS equivalent (LangChain.js), it may not offer the same depth
- * For projects requiring heavy customization at lower levels, where a more granular control over individual components is required rather than working with an integrated framework.
Explore
Sources
Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.
- GitHub stars (BoundaryML/baml) · observed Jul 15, 2026
- GitHub forks (BoundaryML/baml) · observed Jul 15, 2026
- Last push (BoundaryML/baml) · observed Jul 15, 2026
- License file (Apache-2.0) · observed Jul 15, 2026
- Trust scan (lockfile / OSV) · observed Jul 15, 2026
- GitHub stars (langchain-ai/langchain) · observed Jul 14, 2026
- GitHub forks (langchain-ai/langchain) · observed Jul 14, 2026
- Last push (langchain-ai/langchain) · observed Jul 14, 2026
- License file (MIT) · observed Jul 14, 2026
- Decision facts (enrichment) · observed Jul 11, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
GitHub stars on cards: baml 8.5k · langchain 142k (synced Jul 15, 2026).
Common questions
- What is the difference between baml and langchain?
- baml: The programming language for agents. langchain: The agent engineering platform.. See the comparison table for live GitHub stats and shared categories.
- When should I choose baml over langchain?
- Choose baml over langchain when baml is primarily Rust; langchain is Python; License: baml is Apache-2.0, langchain is MIT; Tags unique to baml: boundaryml, guardrails, llm, programming-language; Also covers Inference & Serving.
- When should I choose langchain over baml?
- Choose langchain over baml when langchain is primarily Python; baml is Rust; License: langchain is MIT, baml is Apache-2.0; Pricing: LangChain itself is open-source and free to use. However, it might rely on paid services or premium models from external platforms like OpenAI.; Tags unique to langchain: agents, ai-agents, anthropic, chatgpt; * When aiming to build complex AI-powered agents or applications requiring high-level capabilities like planning, subagent interaction, and file system operations.
- When should I avoid baml?
- AI Agents: Don't use an agent loop when a deterministic workflow would do; agents add latency, cost, and non-determinism. Inference & Serving: Self-hosting rarely beats a hosted API on cost until you have steady, high-volume traffic. LLM Frameworks: Avoid a framework for a single prompt-and-retrieve call; the abstraction can cost more than it saves.
- When should I avoid langchain?
- * When working on smaller, less complex projects where full-scale integration with sophisticated components is not necessary as LangChain's extensive features might introduce unnecessary complexity. * If you are primarily focused on JavaScript or TypeScript development as the primary focus of LangChain is Python. Although there is a JS/TS equivalent (LangChain.js), it may not offer the same depth * For projects requiring heavy customization at lower levels, where a more granular control over individual components is required rather than working with an integrated framework.
- Is baml or langchain more popular on GitHub?
- langchain has more GitHub stars (141,713 vs 8,544). Stars measure visibility, not whether either tool fits your constraints.
- Are baml and langchain open source?
- Yes - both are open-source projects on GitHub (baml: Apache-2.0, langchain: MIT).
- Where can I find alternatives to baml or langchain?
- GraphCanon lists graph-backed alternatives at baml alternatives and langchain alternatives (baml markdown twin, langchain markdown twin), ranked by typed relationship edges rather than popularity votes.
- Is there a machine-readable version of this comparison?
- Yes. The markdown twin at this comparison mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers.
- Which is better maintained, baml or langchain?
- baml: Very active. langchain: Very active. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance.
- Where are the full trust reports for baml and langchain?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: baml trust report; langchain trust report.