Strongest current signal
Package downloads
34.4M/30d
Across npm and PyPI
▲ +15%
Open-source LLM observability platform. Monitor and debug AI applications.
Best current coverage: 34.4M downloads/30d, 499 dependents, and 4 public repos.
Lead signals
Package pull and public code usage both show up clearly for Langfuse.
Strongest current signal
34.4M/30d
Across npm and PyPI
499
Known dependents across npm and PyPI
24.9K
Main repository stars
9/30d
Ranked #24 in category discussion
Research Brief
No recent Research Brief centers Langfuse yet. Start with the latest market reporting, then return here for the stored company signals on this page.
Browse Research Briefs →Reading
package pull and existing public code are the clearest current signals for Langfuse.
Package pull
34.4M/30d
Tracked package pull across npm and PyPI
Existing public code
4
Public repositories importing tracked packages
Downstream usage
499
Known dependent packages across both registries
Engineering activity
10
GitHub contributors active in the last 30 days
Coverage includes npm and PyPI registries, GitHub, public code import detection, developer discussion, distribution surfaces, and recent company news where available. As of April 14, 2026. Methodology
Sustainability and maintenance signals from the primary public repository.
These signals come from public code import detection and tracked hiring posts rather than registry totals alone.
Public repositories and source files importing packages tied to Langfuse.
Background and reference details
background, categories, funding, and tools stay collapsed until you need them.
Langfuse provides observability for LLM applications. Track prompts, responses, and costs. Open-source alternative to proprietary tools.
Raised $5M total - DAI rank #10 (top 4%) suggests strong developer adoption relative to funding.
Burda Principal Investments
Lightspeed Venture Partners
Y Combinator
0 npm · 331K PyPI(50% of company total)
Open-source LLM observability platform. Monitor and debug AI applications.
0 npm · 331K PyPI(50% of company total)
Open-source platform for monitoring, debugging, and evaluating LLM applications.
Public pricing snapshots collected for Langfuse
Source: Company pricing pageUpdates: WeeklyNote: Extracted via automated page analysis; verify on sourceMethodology →Historical metrics for Langfuse
Langfuse: npm Downloads down 16% (556.7K to 468.1K). GitHub Stars up 7% (23.2K to 24.9K).
| Date | npm Downloads | PyPI Downloads | GitHub Stars |
|---|---|---|---|
| Mar 16, 2026 | 556.7K | - | 23.2K |
| Mar 22, 2026 | - | 4.0M | - |
| Mar 23, 2026 | 737.8K | - | 23.2K |
| Mar 29, 2026 | - | 4.0M | - |
| Mar 30, 2026 | 968.4K | - | 24.1K |
| Apr 5, 2026 | - | 3.9M | - |
| Apr 6, 2026 | 869.8K | - | 24.5K |
| Apr 12, 2026 | - | 2.8M | - |
| Apr 13, 2026 | 468.1K | 332.0K | 24.7K |
| Apr 14, 2026 | 0 | - | 24.9K |