
bundlejs
date-fns
Vite
esbuild
Prettier
BeaverCheck
NPMScan
Find the performance impact of adding a npm package to your bundle.

Helicone AI
LangSmith
LangChain
Portkey
Braintrust.dev
PromptLayer
Openlayer
Langfuse is an open-source LLM engineering platform that helps teams collaboratively debug, analyze, and iterate on their LLM applications.

Which is more popular?
Based on our record, BundlePhobia should be more popular than Langfuse. It has been mentioned 60 times since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | bundlephobia.com | langfuse.com |
| Pricing | — | |
| Company | — | Startup from the United States |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of BundlePhobia yet.
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....
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
Walkthroughs and reviews on video.
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Langfuse in two minutes
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using BundlePhobia and Langfuse. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


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Ten free AI prompt tools in 2026 across four categories: prompt generators (SurePrompts, Anthropic Console, OpenAI Playground), libraries (AIPRM, PromptHero, FlowGPT, Awesome ChatGPT Prompts), open-source workflow...
Recommendations tracked on public social media and blogs since March 2021.


The package and bundle figures below are based on the ChromaPanel comparison audit and the current package documentation. Bundle figures refer to the package main entry measured by Bundlephobia, which is different from the amount that a... - Source: dev.to / 27 days ago
Check packages on Bundlephobia before importing. A date-picker that pulls in 80 KB gzipped when you need one function is a problem you choose. - Source: dev.to / 5 months ago
Before adding any npm package, check bundlephobia.com for the bundle cost. Example: lodash costs 70KB — lodash-es with tree shaking costs 0-70KB depending on what you import. - Source: dev.to / 7 months ago
Langfuse is an open-source LLM engineering platform specialized for AI applications. It provides:. - Source: dev.to / 13 days ago
Langfuse is an open-source observability and analytics platform for LLM applications. Its open-source nature is a significant draw for companies that prefer to self-host or want to avoid vendor lock-in. - Source: dev.to / 19 days ago
We have researched and experimented with several AI evaluation platforms, including Arize Phoenix, Microsoft Foundry, and Langfuse. After evaluating them against our requirements and roadmap, we shortlisted Microsoft Foundry and Langfuse... - Source: dev.to / 28 days ago
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Open-source LLM Observability for Developers
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date-fns provides the most comprehensive yet simple and consistent toolset for manipulating JavaScript dates in a browser & Node.js.
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Build and deploy LLM applications with confidence
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Framework for building applications with LLMs through composability
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