--- title: "langstream vs langchaingo" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/rogeriochaves-langstream-vs-tmc-langchaingo" tools: ["rogeriochaves-langstream", "tmc-langchaingo"] --- # langstream vs langchaingo *GraphCanon updated Aug 8, 2026* ## Verdict Pick langstream if langStream is a Python-based tool for building robust Language Model (LLM) applications, emphasizing modularity and composability; pick langchaingo if langChainGo simplifies the integration of Large Language Models into Go projects through easy-to-use APIs and composability. [langstream](https://rogeriochaves.github.io/langstream/) reports 417 GitHub stars, 28 forks, and 3 open issues, last pushed Jan 3, 2024. [langchaingo](https://tmc.github.io/langchaingo/) has 9.6k stars, 1.1k forks, and 410 open issues, last pushed Jan 11, 2026. Figures are from public GitHub metadata via [langstream's repository](https://github.com/rogeriochaves/langstream) and [langchaingo's repository](https://github.com/tmc/langchaingo). | | [langstream](/tools/rogeriochaves-langstream.md) | [langchaingo](/tools/tmc-langchaingo.md) | | --- | --- | --- | | Tagline | Build robust LLM applications with true composability | LangChain for Go, the easiest way to write LLM-based programs in Go | | Stars | 417 | 9,600 | | Forks | 28 | 1,135 | | Open issues | 3 | 410 | | Language | Python | Go | | Adopt for | LangStream is a Python-based tool for building robust Language Model (LLM) applications, emphasizing modularity and composability. | LangChainGo simplifies the integration of Large Language Models into Go projects through easy-to-use APIs and composability. | | Persona | - | - | | Runtime | - | - | | License | MIT | MIT | | Categories | Developer Tools, LLM Frameworks | Developer Tools, LLM Frameworks | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [langstream](/tools/rogeriochaves-langstream.md) | [langchaingo](/tools/tmc-langchaingo.md) | | --- | --- | --- | | Maintenance | Dormant (18%) | Slowing (36%) | | Days since push | 946d | 208d | | Open issues (now) | 3 | 410 | | Full report | [trust report](/tools/rogeriochaves-langstream/trust.md) | [trust report](/tools/tmc-langchaingo/trust.md) | ## Decision facts: langstream - **Adopt for:** LangStream is a Python-based tool for building robust Language Model (LLM) applications, emphasizing modularity and composability. ## Decision facts: langchaingo - **Adopt for:** LangChainGo simplifies the integration of Large Language Models into Go projects through easy-to-use APIs and composability. ## Choose when ### Choose langstream if… - langstream is primarily Python; langchaingo is Go. - Tags unique to langstream: composability, modular development, python. - LangStream is a Python-based tool for building robust Language Model (LLM) applications, emphasizing modularity and composability. ### Choose langchaingo if… - langchaingo is primarily Go; langstream is Python. - Tags unique to langchaingo: ai, go, golang, langchain. - - You are working on a project that requires LLM-based capabilities, but prefer to code in Go. ## When NOT to use langstream - Last GitHub push was 965 days ago (dormant maintenance, Jan 3, 2024). Validate activity before betting a new project on langstream. - Developer Tools: A gateway is overkill when you're pinned to a single provider and model. - LLM Frameworks: Avoid a framework for a single prompt-and-retrieve call; the abstraction can cost more than it saves. ## When NOT to use langchaingo - - If your project strictly adheres to another programming language where other implementations of LangChain are available. - - When your application requires heavy customization at the framework level that might not be directly supported within LangChainGo’s current implementation. ## Common questions ### What is the difference between langstream and langchaingo? langstream: Build robust LLM applications with true composability. langchaingo: LangChain for Go, the easiest way to write LLM-based programs in Go. See the comparison table for live GitHub stats and shared categories. ### When should I choose langstream over langchaingo? Choose langstream over langchaingo when langstream is primarily Python; langchaingo is Go; Tags unique to langstream: composability, modular development, python; LangStream is a Python-based tool for building robust Language Model (LLM) applications, emphasizing modularity and composability. ### When should I choose langchaingo over langstream? Choose langchaingo over langstream when langchaingo is primarily Go; langstream is Python; Tags unique to langchaingo: ai, go, golang, langchain; - You are working on a project that requires LLM-based capabilities, but prefer to code in Go. ### When should I avoid langstream? Last GitHub push was 965 days ago (dormant maintenance, Jan 3, 2024). Validate activity before betting a new project on langstream. Developer Tools: A gateway is overkill when you're pinned to a single provider and model. LLM Frameworks: Avoid a framework for a single prompt-and-retrieve call; the abstraction can cost more than it saves. ### When should I avoid langchaingo? - If your project strictly adheres to another programming language where other implementations of LangChain are available. - When your application requires heavy customization at the framework level that might not be directly supported within LangChainGo’s current implementation. ### Is langstream or langchaingo more popular on GitHub? langchaingo has more GitHub stars (9,600 vs 417). Stars measure visibility, not whether either tool fits your constraints. ### Are langstream and langchaingo open source? Yes - both are open-source projects on GitHub (langstream: MIT, langchaingo: MIT). ### Where can I find alternatives to langstream or langchaingo? GraphCanon lists graph-backed alternatives at [langstream alternatives](/tools/rogeriochaves-langstream/alternatives) and [langchaingo alternatives](/tools/tmc-langchaingo/alternatives) ([langstream markdown twin](/tools/rogeriochaves-langstream/alternatives.md), [langchaingo markdown twin](/tools/tmc-langchaingo/alternatives.md)), 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](/compare/rogeriochaves-langstream-vs-tmc-langchaingo.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, langstream or langchaingo? langstream: Dormant. langchaingo: Slowing. 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 langstream and langchaingo? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [langstream trust report](/tools/rogeriochaves-langstream/trust); [langchaingo trust report](/tools/tmc-langchaingo/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=rogeriochaves-langstream`](/api/graphcanon/graph?tool=rogeriochaves-langstream) - LLM index: [/llms.txt](/llms.txt) - Full corpus: [/llms-full.txt](/llms-full.txt) _GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_