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What is Langfuse?

Langfuse is an open-source platform designed for LLM engineering that allows teams to debug, analyze, and refine their LLM applications at no cost. With its observability feature, you can seamlessly integrate Langfuse into your application to begin capturing traces effectively. The Langfuse UI provides tools to examine and troubleshoot intricate logs as well as user sessions. Additionally, Langfuse enables you to manage prompt versions and deployments with ease through its dedicated prompts feature. In terms of analytics, Langfuse facilitates the tracking of vital metrics such as cost, latency, and overall quality of LLM outputs, delivering valuable insights via dashboards and data exports. The evaluation tool allows for the calculation and collection of scores related to your LLM completions, ensuring a thorough performance assessment. You can also conduct experiments to monitor application behavior, allowing for testing prior to the deployment of any new versions. What sets Langfuse apart is its open-source nature, compatibility with various models and frameworks, robust production readiness, and the ability to incrementally adapt by starting with a single LLM integration and gradually expanding to comprehensive tracing for more complex workflows. Furthermore, you can utilize GET requests to develop downstream applications and export relevant data as needed, enhancing the versatility and functionality of your projects.

What is Arize Phoenix?

Phoenix is an open-source library designed to improve observability for experimentation, evaluation, and troubleshooting. It enables AI engineers and data scientists to quickly visualize information, evaluate performance, pinpoint problems, and export data for further development. Created by Arize AI, the team behind a prominent AI observability platform, along with a committed group of core contributors, Phoenix integrates effortlessly with OpenTelemetry and OpenInference instrumentation. The main package for Phoenix is called arize-phoenix, which includes a variety of helper packages customized for different requirements. Our semantic layer is crafted to incorporate LLM telemetry within OpenTelemetry, enabling the automatic instrumentation of commonly used packages. This versatile library facilitates tracing for AI applications, providing options for both manual instrumentation and seamless integration with platforms like LlamaIndex, Langchain, and OpenAI. LLM tracing offers a detailed overview of the pathways traversed by requests as they move through the various stages or components of an LLM application, ensuring thorough observability. This functionality is vital for refining AI workflows, boosting efficiency, and ultimately elevating overall system performance while empowering teams to make data-driven decisions.

Media

Media

Integrations Supported

LangChain
LlamaIndex
OpenAI
CoLab
Conda
Databricks Data Intelligence Platform
Guardrails AI
JavaScript
JupyterLab
Le Chat
Ministral 3B
Mirascope
Mistral Large
Mistral NeMo
Mistral Small
OpenTelemetry
Pixtral Large
Python
Slack
Vercel

Integrations Supported

LangChain
LlamaIndex
OpenAI
CoLab
Conda
Databricks Data Intelligence Platform
Guardrails AI
JavaScript
JupyterLab
Le Chat
Ministral 3B
Mirascope
Mistral Large
Mistral NeMo
Mistral Small
OpenTelemetry
Pixtral Large
Python
Slack
Vercel

API Availability

Has API

API Availability

Has API

Pricing Information

$29/month
Free Trial Offered?
Free Version

Pricing Information

Free
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

Langfuse

Date Founded

2023

Company Location

Germany

Company Website

langfuse.com

Company Facts

Organization Name

Arize AI

Company Location

United States

Company Website

docs.arize.com/phoenix

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