Comparison
FastGPT vs langchain
Verdict
Pick FastGPT if fastGPT is a knowledge-based platform optimized for developing and deploying complex question-answering systems with built-in capabilities to process data, retrieve relevant information through RAG techniques, and enable; pick langchain if 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.
Markdown twin · FastGPT alternatives · langchain alternatives
GraphCanon updated 3d
vs
Trust & integrity
| Signal | FastGPT | langchain |
|---|---|---|
| Maintenance | Very active (0d since push) As of 3d · github_public_v1 | Very active (0d since push) As of 1w · github_public_v1 |
| Provenance | Not a fork · Organization account As of 3d · github_public_v1 | Not a fork · Organization account As of 1w · github_public_v1 |
| OSV dependency advisories | No lockfile (source not queried) As of 1mo · osv@v1 | No lockfile (source not queried) As of 1mo · 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
- FastGPT
- A knowledge-based platform built on LLMs for developing and deploying complex question-answering systems
- langchain
- The agent engineering platform.
Stars
- FastGPT
- 29k
- langchain
- 144k
Forks
- FastGPT
- 7.3k
- langchain
- 24k
Open issues
- FastGPT
- 165
- langchain
- 463
Language
- FastGPT
- TypeScript
- langchain
- Python
Adopt for
- FastGPT
- FastGPT is a knowledge-based platform optimized for developing and deploying complex question-answering systems with built-in capabilities to process data, retrieve relevant information through RAG techniques, and enable
- 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
- FastGPT
- -
- langchain
- -
Runtime
- FastGPT
- -
- langchain
- -
License
- FastGPT
- Other
- langchain
- MIT License, allowing free use for both personal and commercial purposes under its stipulated terms.
Last pushed
- FastGPT
- Aug 16, 2026
- langchain
- Aug 7, 2026
Categories
- FastGPT
- AI Agents, Data & Retrieval, LLM Frameworks
- langchain
- AI Agents, LLM Frameworks
Trust and health
Open issues (now)
- FastGPT
- 165
- langchain
- 463
Stars delta
- FastGPT
- +360 (30d)
- langchain
- +2.3k (30d)
Open issues delta
- FastGPT
- +7 (30d)
- langchain
- +57 (30d)
Full report
- FastGPT
- Trust report
- langchain
- Trust report
Typed relationship
FastGPT alternative langchainLangChain is an agent engineering platform that could serve a similar purpose to FastGPT in creating and deploying AI agents, making them alternatives.
Choose FastGPT if…
- FastGPT is primarily TypeScript; langchain is Python.
- License: FastGPT is Other, langchain is MIT.
- LangChain is an agent engineering platform that could serve a similar purpose to FastGPT in creating and deploying AI agents, making them alternatives.
- Tags unique to FastGPT: agent, claude, deepseek, llm.
- Also covers Data & Retrieval.
- You prioritize ease of setup and configuration for advanced AI applications.
When NOT to use FastGPT
- If your needs extend beyond question-answering to other AI applications that require extensive customization which FastGPT does not natively support.
- When the level of customization for specific data processors or RAG methods is more critical than out-of-the-box functionality.
- Your use case requires a broader array of model integration, as FastGPT currently specializes in certain frameworks and may lack the depth needed for highly specialized models.
Choose langchain if…
- langchain is primarily Python; FastGPT is TypeScript.
- License: langchain is MIT, FastGPT is Other.
- 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..
- LangChain is an agent engineering platform that could serve a similar purpose to FastGPT in creating and deploying AI agents, making them alternatives.
- 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 (labring/FastGPT) · observed Aug 16, 2026
- GitHub forks (labring/FastGPT) · observed Aug 16, 2026
- Last push (labring/FastGPT) · observed Aug 16, 2026
- License file (Other) · observed Aug 16, 2026
- Decision facts (enrichment) · observed Jul 11, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
- GitHub stars (langchain-ai/langchain) · observed Aug 7, 2026
- GitHub forks (langchain-ai/langchain) · observed Aug 7, 2026
- Last push (langchain-ai/langchain) · observed Aug 7, 2026
- License file (MIT) · observed Aug 7, 2026
- Decision facts (enrichment) · observed Jul 11, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
GitHub stars on cards: FastGPT 29k · langchain 144k (synced Aug 16, 2026).
Common questions
- What is the difference between FastGPT and langchain?
- FastGPT: A knowledge-based platform built on LLMs for developing and deploying complex question-answering systems. langchain: The agent engineering platform.. See the comparison table for live GitHub stats and shared categories.
- When should I choose FastGPT over langchain?
- Choose FastGPT over langchain when FastGPT is primarily TypeScript; langchain is Python; License: FastGPT is Other, langchain is MIT; LangChain is an agent engineering platform that could serve a similar purpose to FastGPT in creating and deploying AI agents, making them alternatives; Tags unique to FastGPT: agent, claude, deepseek, llm; Also covers Data & Retrieval; You prioritize ease of setup and configuration for advanced AI applications.
- When should I choose langchain over FastGPT?
- Choose langchain over FastGPT when langchain is primarily Python; FastGPT is TypeScript; License: langchain is MIT, FastGPT is Other; 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.; LangChain is an agent engineering platform that could serve a similar purpose to FastGPT in creating and deploying AI agents, making them alternatives; 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 FastGPT?
- If your needs extend beyond question-answering to other AI applications that require extensive customization which FastGPT does not natively support. When the level of customization for specific data processors or RAG methods is more critical than out-of-the-box functionality. Your use case requires a broader array of model integration, as FastGPT currently specializes in certain frameworks and may lack the depth needed for highly specialized models.
- 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 FastGPT or langchain more popular on GitHub?
- langchain has more GitHub stars (143,615 vs 29,366). Stars measure visibility, not whether either tool fits your constraints.
- Are FastGPT and langchain open source?
- Yes - both are open-source projects on GitHub (FastGPT: Other, langchain: MIT).
- Where can I find alternatives to FastGPT or langchain?
- GraphCanon lists graph-backed alternatives at FastGPT alternatives and langchain alternatives (FastGPT 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, FastGPT or langchain?
- FastGPT: 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 FastGPT and langchain?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: FastGPT trust report; langchain trust report.