Langfuse is the #1 Open Source LLMOps Product
We have grown from a few core users within Y Combinator to thousands of teams in startups, tech companies, and enterprises. This article includes a summary of metrics that help compare different projects.
We have collected different metrics and are excited to share that Langfuse is the most used Open Source LLMOps product out there.
Langfuse offers developers a comprehensive set of tools for observability, evaluation, and prompt management, making it a good choice to develop and improve AI applications in production. We receive incredible feedback from our users, and it motivates us to continue building the best product for the community.
We are incredibly thankful to work with such a large community of users that care deeply about Langfuse. We have grown from a few core users within Y Combinator to thousands of teams who use Langfuse in startups, tech companies, and enterprises. Your support and engagement helps drive the overall roadmap and success of Langfuse. Thank you for being a part of our journey as we work together to help everyone build better AI applications.
Looking for a popular, well-integrated and battle-tested OSS LLMOps stack that can easily be self-hosted and extended? Learn more about the LiteLLM x Langfuse integration at oss-llmops-stack.com.
Download Metrics
Langfuse is the most downloaded OSS LLMOps tool across Python, JS/TS, and Docker.
| pypi downloads | npm downloads | docker pulls | |
|---|---|---|---|
| 🪢 Langfuse |  |  |  + 2.9M (ghcr) |
| Helicone |  |  |  |
| Opik / Comet |  | N/A | 3k (ghcr) |
| Phoenix / Arize |  | N/A |  |
| Lunary |  |  | N/A |
| Openlit |  |  | 10k (ghcr) |
| Langtrace |  |  |  |
Numbers refresh automatically via shields.io
Community Engagement
Langfuse is the most starred open source LLMOps tool across GitHub and the fastest growing since its launch in June 2023.
source: star-history.com
We are proud to have the most engaged community in this space on GitHub besides our Discord server.
| GitHub stars | Last commit | GitHub Discussions | GitHub Issues | |
|---|---|---|---|---|
| 🪢 Langfuse |  |  |  |  |
| Helicone |  |  |  |  |
| Opik / Comet |  |  | N/A |  |
| Phoenix / Arize |  |  |  |  |
| Lunary |  |  |  |  |
| Openlit |  |  |  |  |
| Langtrace |  |  |  |  |
Numbers refresh automatically via shields.io
Why chose Langfuse?
Large community:
Langfuse has numerous actively maintained integrations with the latest LLM frameworks (such as Langchain, LlamaIndex, and OpenAI) and a helpful community on Discord and GitHub.
Battle-tested:
Langfuse is used in production by thousands of users and has a proven track record of reliability and performance.
Read more on why other teams use Langfuse here.
Detailed Metrics
We want to be as transparent as possible for our customers, community, partners and potential future employees. That is why we aggregate the core metrics on this public dashoard.
Open source projects using Langfuse
While we see a lot of traction, we can monitor which open source projects actually use Langfuse. Find a list below:
Dependents stats for langfuse/langfuse-python
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 Generated using github-dependents-info, by Nicolas Vuillamy
Dependents stats for langfuse/langfuse-js
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 Generated using github-dependents-info, by Nicolas Vuillamy
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