Audience

Software Engineers, AI Engineers, Data Scientists, Product Managers

About Langfuse

Langfuse is an open source LLM engineering platform to help teams collaboratively debug, analyze and iterate on their LLM Applications.

Observability: Instrument your app and start ingesting traces to Langfuse
Langfuse UI: Inspect and debug complex logs and user sessions
Prompts: Manage, version and deploy prompts from within Langfuse

Analytics: Track metrics (LLM cost, latency, quality) and gain insights from dashboards & data exports
Evals: Collect and calculate scores for your LLM completions

Experiments: Track and test app behavior before deploying a new version

Why Langfuse?

- Open source
- Model and framework agnostic
- Built for production
- Incrementally adoptable - start with a single LLM call or integration, then expand to full tracing of complex chains/agents
- Use GET API to build downstream use cases and export data

Pricing

Starting Price:
$29/month
Pricing Details:
Generous free tier and Pro Plans starting at USD 29/month.
Langfuse is open source so you will always be able to host the software yourself at no cost.
Free Version:
Free Version available.
Free Trial:
Free Trial available.

Integrations

API:
Yes, Langfuse offers API access

Ratings/Reviews - 1 User Review

Overall 5.0 / 5
ease 4.0 / 5
features 5.0 / 5
design 4.0 / 5
support 5.0 / 5

Company Information

Langfuse
Founded: 2023
Germany
langfuse.com

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Product Details

Platforms Supported
SaaS
On-Premises
Training
Documentation
Videos
Support
24/7 Live Support
Online

Langfuse Frequently Asked Questions

Q: What kinds of users and organization types does Langfuse work with?
Q: What languages does Langfuse support in their product?
Q: What kind of support options does Langfuse offer?
Q: What other applications or services does Langfuse integrate with?
Q: Does Langfuse have an API?
Q: What type of training does Langfuse provide?
Q: Does Langfuse offer a free trial?
Q: How much does Langfuse cost?

Langfuse Product Features

Langfuse Additional Categories

Langfuse Reviews

Write a Review
  • A Langfuse User
    Consultant
    Used the software for: Free Trial
    Frequency of Use: Weekly
    User Role: User
    Company Size: 500 - 999
    Design
    Ease
    Features
    Pricing
    Support
    Probability You Would Recommend?
    1 2 3 4 5 6 7 8 9 10

    "LLM Observability using Langfuse"

    Posted 2024-03-12

    Pros: I like that this is exclusively designed for LLMs only, so it takes a lot of clutter out of having to deal with features to do with rest of the models. Scores are very comprehensive including the ones related to query/response, ability to find rag relevance, cost related metrics which other tools typically do not offer and comprehensive trace function.

    Cons: There wasn't much but if I have to highlight something here, self hosting was difficult. And the main dashboard can have drill downs to take it to relevant sections in traces/generations etc

    Overall: It was good to see a tool which provides indepth analysis of LLM model interactions. This will be very useful in development and production.

    Read More...