head to head · open source
langchain vs Financial-API
langchain has 146,562 GitHub stars, 24,508 forks, 492 open issues and last shipped yesterday. Financial-API has 3,585 stars, 313 forks, 47 open issues and last shipped 4 days ago. langchain leads on adoption by 3,988% (146,562 vs 3,585 stars). langchain is written in Python under MIT; Financial-API is written in TypeScript under MIT. langchain has attracted 17% as many forks as stars, Financial-API 9%. langchain was the more recently maintained of the two, and both are self-hostable with no licence fee.
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 | Financial-API | |
|---|---|---|
| GitHub stars | ★ 147K | ★ 3.6K |
| License | MIT | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-09-18 | 2026-09-15 |
| Forks | ⑂ 25K | ⑂ 313 |
| 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 Financial-API if
- You want the Financial-API feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and Financial-API 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 Financial-API
Financial API is the official Tonghuashun (HiThink) A share financial data service, an MIT licensed TypeScript project that exposes Chinese stock market data through a REST API, a hosted MCP server, a hithink finance CLI, a Python SDK, a local DuckDB database and an Agent Skill for AI agents, quantitative researchers and application developers.
read the full Financial-API overview →
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Frequently asked questions
Is langchain or Financial-API more popular?
langchain has 146,562 GitHub stars and Financial-API has 3,585. langchain has the larger community by that measure.
Are langchain and Financial-API free?
Both are open source. langchain is licensed under MIT and Financial-API under MIT. Neither carries a licence fee.
What is the difference between langchain and Financial-API?
langchain is written in Python and Financial-API in TypeScript. 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 Financial-API?
Choose langchain if you want the larger community (146,562 stars) or its MIT licence terms. Choose Financial-API if its feature set, stack or MIT licence fits better. Both are self-hostable.