Langfuse vs LangChain
Compare Langfuse and LangChain on deployment, pricing, model support, and more.
Langfuse
- Tagline
- Open-source LLM observability — tracing, evaluation, and prompt management
- Description
- Langfuse is an open-source LLM engineering platform for tracing, evaluation, and prompt management. Self-host it for complete data control or use Langfuse Cloud. Works with LangChain, LlamaIndex, OpenAI SDK, and any custom LLM stack via a simple Python/JavaScript SDK.
- Category
- LLM Frameworks
- Pricing
- Free
- Metric
- 29,584 GitHub stars (source)
- Link
- Visit
LangChain
- Tagline
- Open-source LLM application framework — chains, agents, RAG, and 700+ integrations with 127K GitHub stars
- Description
- LangChain is the most widely used open-source framework for building LLM-powered applications. It provides composable abstractions for chains (sequencing LLM calls), agents (tool-using AI that can browse, run code, and call APIs), and RAG (retrieval-augmented generation with 700+ data and tool integrations). Available in Python and JavaScript, with LangSmith for observability and LangGraph for complex multi-agent workflows.
- Category
- LLM Frameworks
- Pricing
- Free
- Metric
- 139,957 GitHub stars (source)
- Link
- Visit
| Attribute | Langfuse | LangChain |
|---|---|---|
| Tagline | Open-source LLM observability — tracing, evaluation, and prompt management | Open-source LLM application framework — chains, agents, RAG, and 700+ integrations with 127K GitHub stars |
| Category | LLM Frameworks | LLM Frameworks |
| Pricing | Free | Free |
| Description | Langfuse is an open-source LLM engineering platform for tracing, evaluation, and prompt management. Self-host it for complete data control or use Langfuse Cloud. Works with LangChain, LlamaIndex, OpenAI SDK, and any custom LLM stack via a simple Python/JavaScript SDK. | LangChain is the most widely used open-source framework for building LLM-powered applications. It provides composable abstractions for chains (sequencing LLM calls), agents (tool-using AI that can browse, run code, and call APIs), and RAG (retrieval-augmented generation with 700+ data and tool integrations). Available in Python and JavaScript, with LangSmith for observability and LangGraph for complex multi-agent workflows. |
| Metric | 29,584 GitHub stars (source) | 139,957 GitHub stars (source) |
| Link | Visit | Visit |