TruLens

Open-source Python library that traces LLM agent runs and scores each step with feedback functions.

By TruLens (Snowflake) · www.trulens.org

Package download activity

Each package is shown on its own; packages that can be installed together are never added up. Week 2026-W40 (2026-09-28 to 2026-10-04).

PyPItrulens · headline (ranked)

6,198 downloads in the week, +28.0% vs prior week · rank 31 on PyPI

2026-W29 to 2026-W40, 12 weeks; min 4,660, max 58,160

PyPItrulens-providers-openai · integration

2,719 downloads in the week, +32.8% vs prior week

2026-W29 to 2026-W40, 12 weeks; min 1,771, max 5,220

PyPItrulens-providers-litellm · integration

1,703 downloads in the week, +7.4% vs prior week

2026-W29 to 2026-W40, 12 weeks; min 1,454, max 42,585

PyPItrulens-providers-google · integration

221 downloads in the week, +44.4% vs prior week

2026-W29 to 2026-W40, 12 weeks; min 97, max 1,026

PyPItrulens-providers-bedrock · integration

1,033 downloads in the week, +32.4% vs prior week

2026-W29 to 2026-W40, 12 weeks; min 521, max 2,581

PyPItrulens-providers-cortex · integration

994 downloads in the week, +15.9% vs prior week

2026-W29 to 2026-W40, 12 weeks; min 617, max 3,272

truera/trulens: 3,592 stars (rank 24). Stars are a point-in-time count of a repository's bookmarks, not people using the tool.

Series starts 2026-W40 (3,592).

Facts for TruLens
Categories	Evaluation, Tracing & observability
Status	Generally available
Licence	MIT	source, checked 2026-10-07
Self-host	Yes	source, checked 2026-10-07
OpenTelemetry	Native (OTLP)	source, checked 2026-10-07
Pricing model	free
Entry price	Free; Open-source library; no paid plan or pricing page found	source, checked 2026-10-07
Free tier	Yes
Measurability	Measured (mapped SDK packages)

Facts last verified 2026-10-07 on first-party pages. Prices as published, taxes excluded; non-USD prices are not converted.

Spotted an outdated fact? The methodology page explains how facts are checked; corrections are applied at the next weekly build.