# TruLens

- **Canonical URI:** https://www.vioscale.ai/software/trulens
- **Category:** AI Evals Testing
- **Homepage:** https://www.trulens.org
- **Also known as:** trulens
- **Profile claimed by vendor:** no
- **Last updated:** 2026-08-26T19:36:26.327Z

## Vioscale score

**49.1 / 100**, confidence 32% (low). Computed 2026-09-01.

Composite of weighted, independently-sourced signals (no user reviews, no vendor payment).

| Signal | Score | Weight | Contribution | Evidence present |
|---|--:|--:|--:|:--:|
| capabilities | 74.7 | 0.07844444444444446 | 5.9 | ✓ |
| repo_stars | 66.9 | 0.026 | 1.7 | ✓ |
| integrations | 13.7 | 0.07033333333333334 | 1 | ✓ |
| dependent_projects | 5 | 0.063 | 0.3 | ✓ |
| dev_activity | 55 | 0.094 | 5.2 | ✓ |
| release_cadence | 92.2 | 0.052 | 4.8 | ✓ |
| security_posture | 0 | 0.073 | 0 | - |
| package_downloads | 0 | 0.136 | 0 | - |
| security_score | 0 | 0.042 | 0 | - |
| community_qa_activity | 0 | 0.063 | 0 | - |

## Pricing

_As of 2026-08-21, [verify at source](https://www.trulens.org). Independently observed._

Open source · Free tier

## About

An open-source library for systematically evaluating and tracing LLM-based applications, providing feedback functions and metrics to assess quality, safety, and relevance.

_Independently observed._

## Platform & deployment

- **Platforms:** CLI, Web
- **Deployment:** Self-hosted

## Integrations (2)

_Independently observed._

- OpenAI
- GEPA

## Capabilities

_The capabilities that matter for AI Evals Testing. "-" = undocumented, not absent._

| Capability | Supported |
|---|:--:|
| **Capabilities** | |
| Architecture model | Open source CLI |
| LLM as a judge prompt grading framework | ✓ |
| Specialized rag metrics faithfulness context relevance | ✓ |
| Deterministic regex and json schema assertions | - |
| Synthetic test dataset generation from documents | - |
| Ci cd github actions pipeline blocking gates | - |
| Red teaming and adversarial vulnerability scanning | ✓ |
| Multi model side by side ab regression testing | ✓ |
| Human in the loop hitl annotation UI | - |
| Dashboard analytics for metric drift over time | ✓ |
| SOC2 type ii | - |
| Mit or apache permissive oss license | - |
| Pricing model | Free open source |

## Release history

| Version | Date | Type |
|---|---|---|
| [trulens-2.13.1](https://github.com/truera/trulens/releases/tag/trulens-2.13.1) | 2026-08-20 | stable |
| [trulens-2.12.0](https://github.com/truera/trulens/releases/tag/trulens-2.12.0) | 2026-08-06 | stable |
| [trulens-2.11.0](https://github.com/truera/trulens/releases/tag/trulens-2.11.0) | 2026-08-04 | stable |
| [trulens-2.10.0](https://github.com/truera/trulens/releases/tag/trulens-2.10.0) | 2026-07-28 | stable |
| [trulens-2.9.0](https://github.com/truera/trulens/releases/tag/trulens-2.9.0) | 2026-07-23 | stable |
| [trulens-2.8.1](https://github.com/truera/trulens/releases/tag/trulens-2.8.1) | 2026-05-14 | stable |
| [trulens-2.8.0](https://github.com/truera/trulens/releases/tag/trulens-2.8.0) | 2026-04-30 | stable |
| [trulens-2.7.2](https://github.com/truera/trulens/releases/tag/trulens-2.7.2) | 2026-04-09 | stable |
| [trulens-2.7.1](https://github.com/truera/trulens/releases/tag/trulens-2.7.1) | 2026-03-10 | stable |
| [trulens-2.7.0](https://github.com/truera/trulens/releases/tag/trulens-2.7.0) | 2026-02-19 | stable |
| [trulens-2.6.0](https://github.com/truera/trulens/releases/tag/trulens-2.6.0) | 2026-02-04 | stable |
| [trulens-2.5.3](https://github.com/truera/trulens/releases/tag/trulens-2.5.3) | 2026-01-15 | stable |
| [trulens-2.5.2](https://github.com/truera/trulens/releases/tag/trulens-2.5.2) | 2025-12-11 | stable |
| [trulens-2.5.1](https://github.com/truera/trulens/releases/tag/trulens-2.5.1) | 2025-11-21 | stable |
| [trulens-2.5.0](https://github.com/truera/trulens/releases/tag/trulens-2.5.0) | 2025-11-14 | stable |

_… and 5 earlier release(s)._

## Security & compliance


Known vulnerabilities: 0 (0 in the last 12 months) ([source](https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=trulens-eval&per_page=100)). A count reflects scale and disclosure, not quality.

## Facts

Every value below carries its source and our confidence. Facts are re-crawled on a freshness schedule.

### integrations

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| integrations.count | 2 | [link](https://www.trulens.org) | 2026-08-21 | 60% (medium) |

### pricing

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| pricing.free_tier | yes | [link](https://www.trulens.org) | 2026-08-21 | 60% (medium) |
| pricing.model | open_source | [link](https://www.trulens.org) | 2026-08-21 | 60% (medium) |
| pricing.price_level | free | [link](https://www.trulens.org) | 2026-08-21 | 60% (medium) |
| pricing.transparent | yes | [link](https://www.trulens.org) | 2026-08-21 | 60% (medium) |

### reliability

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| reliability.status_page | yes | [link](https://www.trulens.org) | 2026-08-21 | 60% (medium) |

### activity

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| activity.commits_last_30d | 55 | [link](https://github.com/truera/trulens/pulse) | 2026-08-26 | 65% (medium) |

### adoption

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| adoption.github_stars | 3,525 | [link](https://github.com/truera/trulens) | 2026-08-26 | 90% (high) |
| adoption.dependent_repos | 1 | [link](https://packages.ecosyste.ms/api/v1/packages/lookup?repository_url=https%3A%2F%2Fgithub.com%2Ftruera%2Ftrulens) | 2026-08-26 | 85% (high) |

### language

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| language.primary | Python | [link](https://github.com/truera/trulens) | 2026-08-26 | 90% (high) |

### license

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| license.spdx | MIT | [link](https://github.com/truera/trulens) | 2026-08-26 | 95% (high) |

### release

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| release.cadence_days | 14 | [link](https://github.com/truera/trulens/releases) | 2026-08-26 | 70% (medium) |

### security

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=trulens-eval&per_page=100","last_12m":0,"max_severity":null}` | [link](https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=trulens-eval&per_page=100) | 2026-08-26 | 90% (high) |

---
*Source: Vioscale (https://www.vioscale.ai/software/trulens). Independent, evidence-based software intelligence. Cite the canonical URI.*