Langfuse vs. PromptLayer Comparison


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About 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	About The first platform built for prompt engineers. Log OpenAI requests, search usage history, track performance, and visually manage prompt templates. manage Never forget that one good prompt. GPT in prod, done right. Trusted by over 1,000 engineers to version prompts and monitor API usage. Start using your prompts in production. To get started, create an account by clicking “log in” on PromptLayer. Once logged in, click the button to create an API key and save this in a secure location. After making your first few requests, you should be able to see them in the PromptLayer dashboard! You can use PromptLayer with LangChain. LangChain is a popular Python library aimed at assisting in the development of LLM applications. It provides a lot of helpful features like chains, agents, and memory. Right now, the primary way to access PromptLayer is through our Python wrapper library that can be installed with pip.
Platforms Supported Windows Not Supported Mac Not Supported Linux Not Supported Cloud Supported On-Premises Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported	Platforms Supported Windows Not Supported Mac Not Supported Linux Not Supported Cloud Supported On-Premises Not Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported
Audience Software Engineers, AI Engineers, Data Scientists, Product Managers	Audience Prompt engineers seeking a platform to build, search for, track, and manage prompts
Support Phone Support Not Supported 24/7 Live Support Supported Online Supported	Support Phone Support Not Supported 24/7 Live Support Not Supported Online Supported
API Offers API Supported	API Offers API Supported
Screenshots and Videos View more images or videos	Screenshots and Videos View more images or videos
Pricing $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 Supported Free Trial Supported	Pricing Free Free Version Supported Free Trial Not Supported
Reviews/Ratings Overall 5.0 / 5 ease 4.0 / 5 features 5.0 / 5 design 4.0 / 5 support 5.0 / 5 Read all reviews	Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software
Pros & Cons from Real Users 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
Training Documentation Supported Webinars Not Supported Live Online Not Supported In Person Not Supported	Training Documentation Supported Webinars Not Supported Live Online Not Supported In Person Not Supported
Company Information Langfuse Founded: 2023 Germany langfuse.com	Company Information PromptLayer United States promptlayer.com
Alternatives AgentOps	Alternatives Langtail
Arize AI	Lunary
Athina AI	Maxim
Orq.ai	Literal AI
Maxim View All	LangChain View All
Categories AI Agent Observability Supported AI Observability Supported LLM Evaluation Supported Observability Supported Prompt Management Supported	Categories Context Engineering Supported LLM Evaluation Supported Prompt Engineering Supported Prompt Management Supported

Integrations LiteLLM Supported OpenAI Supported Workers by Delos Supported ChatGPT Not Supported Claude Supported Datamorf Not Supported Dograh Supported Ellipsis Not Supported Flowise Supported GPT-3 Not Supported GPT-3.5 Not Supported GPT-4 Not Supported Hugging Face Supported Lamatic.ai Supported LangChain Supported LlamaIndex Supported Mirascope Supported Netguru Omega Supported TierZero Supported Voker Supported Show More Integrations View All 14 Integrations	Integrations LiteLLM Supported OpenAI Supported Workers by Delos Supported ChatGPT Supported Claude Not Supported Datamorf Supported Dograh Not Supported Ellipsis Supported Flowise Not Supported GPT-3 Supported GPT-3.5 Supported GPT-4 Supported Hugging Face Not Supported Lamatic.ai Not Supported LangChain Not Supported LlamaIndex Not Supported Mirascope Not Supported Netguru Omega Not Supported TierZero Not Supported Voker Not Supported Show More Integrations View All 9 Integrations
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