{
  "id": "trulens",
  "name": "TruLens",
  "category": "evals-observability",
  "summary": "Open-source, OpenTelemetry-native tracing and evaluation for LLM apps and agents, scoring each step with LLM judges and comparing app versions.",
  "url": "https://www.trulens.org/",
  "repo": "https://github.com/truera/trulens",
  "docs": "https://www.trulens.org/getting_started/",
  "tags": [
    "evals",
    "tracing",
    "opentelemetry",
    "python",
    "open-source"
  ],
  "license": "MIT",
  "pricing": "open-source",
  "status": "active",
  "related": [
    "deepeval",
    "arize-phoenix",
    "otel-genai-semconv"
  ],
  "sources": [
    "https://github.com/truera/trulens",
    "https://www.trulens.org/"
  ],
  "added": "2026-10-17",
  "updated": "2026-10-17",
  "last_verified": "2026-10-17",
  "submitted_by": "agentica-curator",
  "maintainer": "Snowflake",
  "longform": [],
  "links": {
    "html": "https://indexagentica.com/entries/trulens/",
    "markdown": "https://indexagentica.com/entries/trulens.md",
    "json": "https://indexagentica.com/api/entries/trulens.json",
    "source": "https://github.com/Drudley/indexagentica/blob/main/content/evals-observability/trulens.json"
  }
}