TypeScript
langfuse/langfuse
🪢 Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform.
★ 37.1k
Stars
4.2k forks · 1.1k open issues
+52/day
Growth · measured
Stars counted between two of our own snapshots roughly a week apart. The repository page gives the exact span.
61.2
Momentum / 100
see the breakdown below
3y ago
Created
last push 2d ago
Star history
How this score was built
| Component | Weight | Earned | Why |
|---|---|---|---|
| Velocity | 55 | 32.9 | +52/day, log-scaled against a 750/day ceiling |
| Acceleration | 15 | 0.0 | last week ran 0.94× the monthly pace |
| Freshness | 15 | 15.0 | last push 2d ago; decays to zero at 180 days |
| Scale | 15 | 13.2 | 37.1k stars, log-scaled against 150k — stops a 3-star repo topping the board |
| Momentum | 100 | 61.2 | sum of the above |
Detail
| Topics | analyticsautogenevaluationlangchainlarge-language-modelsllama-indexllmllm-evaluationllm-observabilityllmopsmonitoringobservabilityopen-sourceopenaiplaygroundprompt-engineeringprompt-managementself-hostedycombinator |
| Matched on | LLM & Inference (large-language-models, llm) Dev Tools (self-hosted) |
| Short window | +361 stars over 7 days = 51.6/day |
| Long window | +1.4k stars over 26 days = 54.8/day |
| Lifetime average | 29.25 stars/day over 1,267 days |
| First seen here | 2026-10-11 |
| Last read | 2d ago |