Software Alternatives, Accelerators & Startups

LangSmith VS Langfuse

Compare LangSmith VS Langfuse and see what are their differences

LangSmith logo LangSmith

Build and deploy LLM applications with confidence

Langfuse logo Langfuse

Langfuse is an open-source LLM engineering platform that helps teams collaboratively debug, analyze, and iterate on their LLM applications.
  • LangSmith Landing page
    Landing page //
    2023-10-21
  • Langfuse Landing page
    Landing page //
    2023-08-20

Langfuse is an open-source LLM engineering platform designed to empower developers by providing insights into user interactions with their LLM applications. We offer tools that help developers understand usage patterns, diagnose issues, and improve application performance based on real user data. By integrating seamlessly into existing workflows, Langfuse streamlines the process of monitoring, debugging, and optimizing LLM applications. Our platform's robust documentation and active community support make it easy for developers to leverage Langfuse for enhancing their LLM projects efficiently. Whether you're troubleshooting interactions or iterating on new features, Langfuse is committed to simplifying your LLM development journey.

LangSmith features and specs

  • Enhanced Workflow Integration
    LangSmith provides seamless integration with existing workflows, allowing for a streamlined process when incorporating language models into various applications.
  • User-Friendly Interface
    The platform features an intuitive and user-friendly interface, making it accessible for both technical and non-technical users to navigate and utilize effectively.
  • Advanced Language Model Support
    LangSmith offers support for a wide range of advanced language models, enabling users to choose the best fit for their specific needs.
  • Comprehensive Analytics
    Users have access to comprehensive analytics tools that allow for detailed monitoring and evaluation of language model performance.

Possible disadvantages of LangSmith

  • Cost Considerations
    Depending on the scale and frequency of use, LangSmith can become costly, potentially making it less accessible for smaller organizations or individual developers.
  • Learning Curve
    While user-friendly, mastering all features of LangSmith may require some time and effort, especially for users who are less experienced with language models.
  • Limited Customization
    Some users might find the customization options for certain aspects of the platform to be limited compared to building a solution in-house.
  • Dependency on Internet Connectivity
    LangSmith, being a cloud-based service, relies heavily on a stable internet connection, which can be a limitation in regions with poor connectivity.

Langfuse features and specs

  • User-Friendly Interface
    Langfuse offers a clean and intuitive interface that makes it easy for users to navigate and use the platform efficiently, regardless of their technical skill level.
  • Integration Capabilities
    The platform provides a variety of APIs and integration options, allowing users to seamlessly connect Langfuse with other applications and services they use.
  • Comprehensive Analysis Tools
    Langfuse offers advanced analysis tools that help users to gain insights from their language data, improving decision-making and strategy development.

Possible disadvantages of Langfuse

  • Limited Language Support
    While Langfuse offers a range of language options, it may not support as many languages as some global companies require, potentially limiting its usability for diverse linguistic needs.
  • Pricing Model
    The pricing model of Langfuse might be considered expensive for small businesses or startups with a limited budget, which can make it less accessible to those users.
  • Learning Curve for Advanced Features
    While the basic features are easy to use, some advanced functionalities might have a steep learning curve, requiring more time and effort from users to fully leverage them.

LangSmith videos

🦜🛠️ Getting started with LangSmith - Integrating with LANGCHAIN powered Web Applications & Chatbots

Langfuse videos

Langfuse in two minutes

Category Popularity

0-100% (relative to LangSmith and Langfuse)
AI
55 55%
45% 45
Productivity
51 51%
49% 49
Help Desk
44 44%
56% 56
AI Tools
100 100%
0% 0

User comments

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Social recommendations and mentions

Based on our record, Langfuse seems to be more popular. It has been mentiond 10 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

LangSmith mentions (0)

We have not tracked any mentions of LangSmith yet. Tracking of LangSmith recommendations started around Jul 2023.

Langfuse mentions (10)

  • Top Open Source Tools for LLM Observability in 2025
    Langfuse is another open-source platform for debugging, analyzing, and iterating on language model applications. It offers tracing, evaluation, and prompt management. While Langfuse offers many capabilities, some (like the Prompt Playground and automated evaluation) are only available in the paid tier for self-hosted users. - Source: dev.to / 4 days ago
  • A Curated List of shadcn/ui-like React Component Collections
    It is reportedly used on websites like Langfuse and Million.dev. - Source: dev.to / about 2 months ago
  • 10 Ways AI Can Speed Up your Mobile App Development
    LangFuse is a monitoring and debugging platform for LLM-powered applications. It provides insights into token usage and costs. It can also analyze latency, and the performance of AI interactions. The platform allows debug prompts, and analyzes how they behave in production. - Source: dev.to / 2 months ago
  • Building effective AI agents with Trigger.dev
    You'll notice there's a lot of prompts in these examples. As you develop your prompts, you'll likely want to iterate and refine them over time. I recommend using tools like Langfuse or Langsmith for prompt management and metrics, making it easier to track performance and make improvements. - Source: dev.to / 3 months ago
  • Ask HN: Who is hiring? (February 2025)
    Langfuse (https://langfuse.com). We started with observability and have branched out into more workflows over time (evals, prompt mgmt, playground, testing...). We have a bunch of traction and are looking for our fourth to sixth hire in scaling and building feature depth. We're hiring in person (4-5 days/week) in Berlin, Germany (salary ranges for each job 70k-130k, up to 0.35% equity). We value quality in... - Source: Hacker News / 3 months ago
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What are some alternatives?

When comparing LangSmith and Langfuse, you can also consider the following products

Datumo Eval - Discover Datumo Eval, the cutting-edge LLM evaluation platform from Datumo, designed to optimize AI model accuracy, reliability, and performance through advanced evaluation methodologies.

Braintrust - Braintrust connects companies with top technical talent to complete strategic projects and drive innovation. Our AI Recruiter can 100x your recruiting power.

Braintrust.dev - Rapidly ship AI without guesswork

LangChain - Framework for building applications with LLMs through composability

Athina AI - Athina helps developers to build reliable LLM applications.

Galileo AI - ChatGPT, but for UI design