What does TruLens do?

Enabling developers to objectively evaluate and trace the performance of AI agents and workflows. It is catalogued under LLM eval & observability on PulseGate.

TruLens is an open-source project built for AI developers and researchers.

Does TruLens have a free plan?

Yes — TruLens is open source under the MIT license and free to use.

What platforms does TruLens run on?

TruLens runs on the command line. It can also be self-hosted.

Is TruLens still active?

The GitHub repository shows 56 commits in the last 90 days.

What are alternatives to TruLens?

Similar projects tracked by PulseGate include TraceFlowLens, runlens, and tracium.

Is TruLens open source?

Yes — TruLens is open source under the MIT license, developed on GitHub.

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TruLens

trulens.orgInfrastructure

TruLens is an open-source tool for evaluating and tracing AI agent workflows, providing metrics, benchmarking, and OpenTelemetry integration. It helps developers and researchers analyze and improve the quality and effectiveness of AI agent applications.

Open SourceMITCLISelf-hosted

Visit trulens.org

3.4kstars

296forks

5features

2020since

Overview

5 features

TruLens is a LLM eval & observability project. Enabling developers to objectively evaluate and trace the performance of AI agents and workflows. TruLens is an open-source project aimed at AI developers and researchers. The project is open source (MIT). TruLens is available on the command line, and it can be self-hosted.

TruLens first shipped in 2020. The project is developed in the open on GitHub with 3.4k stars and 56 commits in the last 90 days. Key capabilities include agent evaluation, tracing, and metrics library.

Summary written by a language model from the project’s public pages.

Agent evaluation
Tracing
Metrics library
OpenTelemetry integration
Benchmarking

Built with & integrations

Runs on

CLISelf-hosted

Trust & compliance

License

MIT

Verified signals

HTTPSOpen SourceFree tierGitHub · ★ 3.4kActive maintenance

Indexing history

What PulseGate has recorded for this listing

Indexed16 Jun · 11:58 UTC
Listing verified against its public source
Source: PulseGate · Open

Frequently asked questions about TruLens

What does TruLens do?: Enabling developers to objectively evaluate and trace the performance of AI agents and workflows. It is catalogued under LLM eval & observability on PulseGate.
Who is TruLens for?: TruLens is an open-source project built for AI developers and researchers.
Does TruLens have a free plan?: Yes — TruLens is open source under the MIT license and free to use.
What platforms does TruLens run on?: TruLens runs on the command line. It can also be self-hosted.
Is TruLens still active?: The GitHub repository shows 56 commits in the last 90 days.
What are alternatives to TruLens?: Similar projects tracked by PulseGate include TraceFlowLens, runlens, and tracium.TraceFlowLens runlens tracium
When did TruLens launch?: TruLens first shipped in 2020.
Is TruLens open source?: Yes — TruLens is open source under the MIT license, developed on GitHub.

At a glance

Pricing: Open Source
Platforms: Cli
Languages: English
Open source: Yes · ★ 3.4k
License: MIT
Built for: AI developers and researchers
Model: Open source
Solves: Enabling developers to objectively evaluate and trace the performance of AI agents and workflows.

Registered as

GitHub: truera/trulens
PyPI: trulens-apps-gepa

Developer

Truera

Community-driven

GitHub

Open source

View on GitHub

Stars: 3,384
Forks: 296
Open issues: 99
Last commit: 16 Jun 2026
Commits 90d: 56
Contributors: 78
Authorship: Community-driven
Default branch: main
Latest release: trulens-2.8.1 · 14 May 2026

Index record

Identity confidence: High · 95
Indexed: 16 Jun 2026
Lifecycle: Alive
Last seen: 16 Jun 2026

Identity audit (12)

Slug: trulens-apps-gepa-trulens-org
Lifecycle last checked: 8 Aug 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 16 Jun 2026
Timeline basis: Indexed-at chronology. This listing's first-seen date was written by the catalog backfill, not observed here, so it is not treated as a sighting.
Name from: Derived from the project's own page and URL.
Category from: Assigned by the 2026 taxonomy migration.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Canonical URL: https://trulens.org/

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