Comparison
openllmetry vs trulens
Verdict
Pick openllmetry when license: openllmetry is Apache-2.0, trulens is MIT; pick trulens when license: trulens is MIT, openllmetry is Apache-2.0.
Markdown twin · openllmetry alternatives · trulens alternatives
GraphCanon updated today
vs
Trust & integrity
| Signal | openllmetry | trulens |
|---|---|---|
| Maintenance | Very active (4d since push) As of 6d · github_public_v1 | Very active (0d since push) As of today · github_public_v1 |
| Provenance | Not a fork · Organization account As of 6d · github_public_v1 | Not a fork · Organization account As of today · github_public_v1 |
| OSV dependency advisories | Published findings As of 1mo · osv@v1 | No published findings from this source as of 2026-07-11 As of 1mo · osv@v1 |
| deps.dev advisories | Not queried deps.dev@v1 | Not queried deps.dev@v1 |
| OpenSSF Scorecard | Not queried openssf-scorecard@v1 | Not queried openssf-scorecard@v1 |
Tagline
- openllmetry
- Open-source observability for GenAI and LLM applications based on OpenTelemetry.
- trulens
- Evaluation and Tracking for LLM Experiments and AI Agents
Stars
- openllmetry
- 7.4k
- trulens
- 3.5k
Forks
- openllmetry
- 1.0k
- trulens
- 327
Open issues
- openllmetry
- 638
- trulens
- 65
Language
- openllmetry
- Python
- trulens
- Python
Adopt for
- openllmetry
- -
- trulens
- Trulens aids in evaluating and monitoring Language Model experiments and AI agents, with integrations for various providers.
Persona
- openllmetry
- -
- trulens
- -
Runtime
- openllmetry
- -
- trulens
- -
License
- openllmetry
- Apache-2.0
- trulens
- MIT
Last pushed
- openllmetry
- Aug 10, 2026
- trulens
- Aug 20, 2026
Categories
- openllmetry
- Evaluation & Observability
- trulens
- AI Agents, Evaluation & Observability
Trust and health
Days since push
- openllmetry
- 4d
- trulens
- 0d
Open issues (now)
- openllmetry
- 638
- trulens
- 65
Stars delta
- openllmetry
- +75 (30d)
- trulens
- +68 (30d)
Open issues delta
- openllmetry
- +42 (30d)
- trulens
- -32 (30d)
OSV dependency advisories
- openllmetry
- Published findings
- trulens
- No published findings from this source as of 2026-07-11
Full report
- openllmetry
- Trust report
- trulens
- Trust report
Typed relationship
openllmetry alternative trulensOpenLLMetry provides open-source observability for LLMs, similar to TruLens, which focuses on evaluation and tracking of performance across developmental iterations.
Shared compatibility
- Python · openllmetry: Python runtime · trulens: Python runtime
Choose openllmetry if…
- License: openllmetry is Apache-2.0, trulens is MIT.
- OpenLLMetry provides open-source observability for LLMs, similar to TruLens, which focuses on evaluation and tracking of performance across developmental iterations.
- Tags unique to openllmetry: artifical-intelligence, datascience, generative-ai, good-first-issue.
- Use openllmetry when you need observability tools specifically tuned for GenAI and LLM operations integrated with OpenTelemetry.
When NOT to use openllmetry
- Avoid using openllmetry in environments where dependency on Python is undesirable or where alternative languages are prioritized beyond Python's ecosystem.
- Do not select openllmetry if you prefer tools that offer broader customization options for core observability features, as it specializes in integration with OpenTelemetry.
Choose trulens if…
- License: trulens is MIT, openllmetry is Apache-2.0.
- OpenLLMetry provides open-source observability for LLMs, similar to TruLens, which focuses on evaluation and tracking of performance across developmental iterations.
- Tags unique to trulens: agent-evaluation, ai-agents, ai-monitoring, evaluation-tool.
- Also covers AI Agents.
- Need to evaluate specific models from OpenAI, Google Gemini, AWS Bedrock, or HuggingFace.
When NOT to use trulens
- Looking for a tool that solely focuses on training models rather than evaluation and monitoring.
- Require support for less common model providers not listed in Trulens integrations.
Explore
Sources
Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.
- GitHub stars (traceloop/openllmetry) · observed Aug 15, 2026
- GitHub forks (traceloop/openllmetry) · observed Aug 15, 2026
- Last push (traceloop/openllmetry) · observed Aug 10, 2026
- License file (Apache-2.0) · observed Aug 15, 2026
- Decision facts (enrichment) · observed Jul 14, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
- GitHub stars (truera/trulens) · observed Aug 20, 2026
- GitHub forks (truera/trulens) · observed Aug 20, 2026
- Last push (truera/trulens) · observed Aug 20, 2026
- License file (MIT) · observed Aug 20, 2026
- Decision facts (enrichment) · observed Jul 12, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
GitHub stars on cards: openllmetry 7.4k · trulens 3.5k (synced Aug 15, 2026).
Common questions
- What is the difference between openllmetry and trulens?
- openllmetry: Open-source observability for GenAI and LLM applications based on OpenTelemetry.. trulens: Evaluation and Tracking for LLM Experiments and AI Agents. See the comparison table for live GitHub stats and shared categories.
- When should I choose openllmetry over trulens?
- Choose openllmetry over trulens when License: openllmetry is Apache-2.0, trulens is MIT; OpenLLMetry provides open-source observability for LLMs, similar to TruLens, which focuses on evaluation and tracking of performance across developmental iterations; Tags unique to openllmetry: artifical-intelligence, datascience, generative-ai, good-first-issue; Use openllmetry when you need observability tools specifically tuned for GenAI and LLM operations integrated with OpenTelemetry.
- When should I choose trulens over openllmetry?
- Choose trulens over openllmetry when License: trulens is MIT, openllmetry is Apache-2.0; OpenLLMetry provides open-source observability for LLMs, similar to TruLens, which focuses on evaluation and tracking of performance across developmental iterations; Tags unique to trulens: agent-evaluation, ai-agents, ai-monitoring, evaluation-tool; Also covers AI Agents; Need to evaluate specific models from OpenAI, Google Gemini, AWS Bedrock, or HuggingFace.
- When should I avoid openllmetry?
- Avoid using openllmetry in environments where dependency on Python is undesirable or where alternative languages are prioritized beyond Python's ecosystem. Do not select openllmetry if you prefer tools that offer broader customization options for core observability features, as it specializes in integration with OpenTelemetry.
- When should I avoid trulens?
- Looking for a tool that solely focuses on training models rather than evaluation and monitoring. Require support for less common model providers not listed in Trulens integrations.
- Is openllmetry or trulens more popular on GitHub?
- openllmetry has more GitHub stars (7,377 vs 3,516). Stars measure visibility, not whether either tool fits your constraints.
- Are openllmetry and trulens open source?
- Yes - both are open-source projects on GitHub (openllmetry: Apache-2.0, trulens: MIT).
- Where can I find alternatives to openllmetry or trulens?
- GraphCanon lists graph-backed alternatives at openllmetry alternatives and trulens alternatives (openllmetry markdown twin, trulens markdown twin), ranked by typed relationship edges rather than popularity votes.
- Is there a machine-readable version of this comparison?
- Yes. The markdown twin at this comparison mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers.
- Which is better maintained, openllmetry or trulens?
- openllmetry: Very active. trulens: Very active. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance.
- Where are the full trust reports for openllmetry and trulens?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: openllmetry trust report; trulens trust report.