head to head · open source
langchain vs Bifrost
langchain has 146,538 GitHub stars, 24,504 forks, 492 open issues and last shipped yesterday. Bifrost has 8,142 stars, 1,227 forks, 1,014 open issues and last shipped yesterday. langchain leads on adoption by 1,700% (146,538 vs 8,142 stars). langchain is written in Python under MIT; Bifrost is written in Go under Apache-2.0. langchain has attracted 17% as many forks as stars, Bifrost 15%. langchain was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (generative-ai), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| langchain | Bifrost | |
|---|---|---|
| GitHub stars | ★ 147K | ★ 8.1K |
| License | MIT | Apache-2.0 |
| Written in | Python | Go |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 25K | ⑂ 1.2K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick langchain if
- You weight community size — 147K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick Bifrost if
- You want the Bifrost feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and Bifrost fits your workflow better
About langchain
LangChain is an open source framework for building agents and LLM powered applications, written in Python and released under the MIT license. It lives in the AI and machine learning ecosystem, specifically among AI development platforms, and it works by chaining together interoperable components and third party integrations so that AI application development becomes simpler. The project describes itself as the agent engineering platform, and its abstractions are designed to keep applications working as the underlying technology evolves.
read the full langchain overview →
About Bifrost
Bifrost is an open source, Go based AI gateway that puts 23+ model providers — OpenAI, Anthropic, AWS Bedrock, Google Vertex, Azure, Cerebras, Cohere, Mistral, Ollama, Groq and more — behind one OpenAI compatible API, built for teams running AI features in production that need failover, load balancing and caching without rewriting client code.
read the full Bifrost overview →
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Frequently asked questions
Is langchain or Bifrost more popular?
langchain has 146,538 GitHub stars and Bifrost has 8,142. langchain has the larger community by that measure.
Are langchain and Bifrost free?
Both are open source. langchain is licensed under MIT and Bifrost under Apache-2.0. Neither carries a licence fee.
What is the difference between langchain and Bifrost?
langchain is written in Python and Bifrost in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, langchain or Bifrost?
Choose langchain if you want the larger community (146,538 stars) or its MIT licence terms. Choose Bifrost if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.