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

Fast.com
Speedtest.net
SpeedOf.Me
Testmy.net
nPerf
Speed Test by Cloudflare
speedtest-cli
Self-hosted Speedtest for HTML5. Easy setup, examples, configurable, mobile friendly.

Which is more popular?
Langfuse might be a bit more popular than LibreSpeed. We know about 35 links to it since March 2021 and only 34 links to LibreSpeed.
Website, pricing, platforms and company facts side by side.
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| Website | langfuse.com | github.com |
| Pricing | — | |
| Company | Startup from the United States | — |
| Listed in |
In their own words, as submitted to SaaSHub.


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


Possible disadvantages
Possible disadvantages
Walkthroughs and reviews on video.
Langfuse in two minutes
Self-host your own internet speed test with LibreSpeed!
More videos
How often each product is chosen within a category, 0–100% relative to the other.


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


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...
We have no reviews of LibreSpeed yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Langfuse is an open-source LLM engineering platform specialized for AI applications. It provides:. - Source: dev.to / 1 day 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 / 7 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 / 16 days ago
I run internetspeedtest.net, a free, no-signup speed test built on the open-source LibreSpeed engine. - Source: dev.to / about 1 month ago
Try hosting a DIY speed test on a cloud server (like Google colab or the free oracle instances or whatever): https://github.com/librespeed/speedtest. - Source: Hacker News / about 3 years ago
It should be DIA. They provide the internet connection to the company since 2 decades and it's a very small ISP, so it's very vague in terms of contract. Iperf was giving me very terrible results with TCP, UDP was giving me a couple of... Source: over 3 years ago
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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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SpeedOf.Me is an HTML5 Internet speed test. No Flash or Java needed!
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