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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 Galileo?

Galileo is an AI observability and eval engineering platform built to help organizations measure, protect, and improve AI applications and agents across the full development lifecycle. Now part of Cisco, Galileo is positioned around the idea that teams should not only monitor AI failures, but prevent them with production-ready guardrails. The platform helps teams capture ground truth from synthetic data, development workflows, live production traffic, and subject matter expert annotations. Galileo provides more than 20 out-of-the-box evaluations for RAG systems, agents, safety, security, and custom use cases. Its eval engineering workflow helps teams create accurate evaluators that reflect their own domain expertise instead of relying only on generic metrics. Galileo can auto-tune metrics from live feedback so evaluations become better aligned with real environments. The platform’s Luna models distill expensive LLM-as-judge evaluators into compact models that can run across production traffic at lower cost and lower latency. Galileo’s insights engine analyzes millions of signals across models, prompts, functions, context, datasets, traces, and MCP server activity to identify failure modes and recommend fixes. Teams can use these insights to debug agent behavior, improve prompts, adjust tools, detect hallucinations, and strengthen AI reliability. Galileo supports the eval-to-guardrail lifecycle, where pre-production tests become production policies that can block harmful responses, control tool access, and guide escalation paths. By combining AI observability, evals, ground-truth datasets, Luna guardrail models, agent reliability workflows, safety controls, deployment flexibility, and production monitoring, Galileo helps enterprises ship AI systems with more confidence.

Media

Media

Integrations Supported

LangChain
OpenAI
Azure OpenAI Service
Claude
Gemini
Gemini 1.5 Flash
Gemini 1.5 Pro
Gemini 2.0
Gemini 2.0 Flash
Gemini Enterprise
Gemini Enterprise Agent Platform
Gemini Pro
Google AI Plus
Hugging Face
LiteLLM
LlamaIndex
Mirascope
Netguru Omega
TierZero
Workers by Delos

Integrations Supported

LangChain
OpenAI
Azure OpenAI Service
Claude
Gemini
Gemini 1.5 Flash
Gemini 1.5 Pro
Gemini 2.0
Gemini 2.0 Flash
Gemini Enterprise
Gemini Enterprise Agent Platform
Gemini Pro
Google AI Plus
Hugging Face
LiteLLM
LlamaIndex
Mirascope
Netguru Omega
TierZero
Workers by Delos

API Availability

Has API

API Availability

Has API

Pricing Information

$29/month
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 Trial Offered?

Pricing Information

Pricing not provided
Free Version
Free Trial Offered?

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

Cisco

Company Location

United States

Company Website

www.galileo.ai/

Categories and Features

Machine Learning

Deep Learning
ML Algorithm Library
Model Training
Natural Language Processing (NLP)
Predictive Modeling
Statistical / Mathematical Tools
Templates
Visualization

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