Prompt & EvalOpen Source✦ Free Tier
TruLens
Open-source eval and tracking for LLM applications and RAG pipelines
⭐ 2,100 starsApp Infrastructure
About
TruLens is an open-source library for evaluating and tracking LLM-based applications, with a focus on RAG pipelines. It provides feedback functions for groundedness, answer relevance, and context relevance, plus a dashboard for visualizing eval results across experiments.
Choose TruLens when…
- •evaluating RAG pipeline quality — groundedness and relevance
- •want open-source evals with a visual results dashboard
- •building with LangChain or LlamaIndex and need eval integration
Builder Slot
How do you know it's working?Optional for most stacks
Tests, evals, and experiment tracking to measure and improve your AI output quality
Dev Tools
Not applicable
App Infra
Recommended
Hybrid
Optional
Stack Genome Detection
AIchitect's Genome scanner detects TruLens in your project via these signals:
pip packages
trulenstrulens-evalAlternatives to consider (2)
Pricing
✦ Free tier available
Open SourceFree
Badge
Add to your GitHub README
[](https://aichitect.dev/tool/trulens)Explore the full AI landscape
See how TruLens fits into the bigger picture — browse all 207 tools and their relationships.