Comparison
phoenix vs openllmetry
Verdict
Pick phoenix if phoenix is an AI observability and evaluation tool designed for monitoring and evaluating AI models and systems, with a focus on observability and evaluation metrics; pick openllmetry if openLLMetry is an open-source observability tool for GenAI and LLM applications, built on OpenTelemetry, offering Python SDK for easy integration.
Markdown twin · phoenix alternatives · openllmetry alternatives
GraphCanon updated Sep 20, 2026
15views this month
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Trust & integrity
| Signal | phoenix | openllmetry |
|---|---|---|
| Maintenance | Very active (0d since push) As of Sep 18, 2026 · github_public_v1 | Very active (0d since push) As of Sep 18, 2026 · github_public_v1 |
| Provenance | Not a fork · Organization account As of Sep 18, 2026 · github_public_v1 | Not a fork · Organization account As of Sep 18, 2026 · github_public_v1 |
| OSV dependency advisories | No lockfile (source not queried) As of Sep 18, 2026 · osv@v1 | Published findings As of Sep 18, 2026 · 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
- phoenix
- AI Observability & Evaluation
- openllmetry
- Open-source observability for GenAI or LLM applications based on OpenTelemetry
Stars
- phoenix
- 12k
- openllmetry
- 7.4k
Forks
- phoenix
- 1.1k
- openllmetry
- 1.1k
Open issues
- phoenix
- 1.0k
- openllmetry
- 679
Language
- phoenix
- Python
- openllmetry
- Python
Adopt for
- phoenix
- Phoenix is an AI observability and evaluation tool designed for monitoring and evaluating AI models and systems, with a focus on observability and evaluation metrics.
- openllmetry
- OpenLLMetry is an open-source observability tool for GenAI and LLM applications, built on OpenTelemetry, offering Python SDK for easy integration.
Persona
- phoenix
- -
- openllmetry
- -
Runtime
- phoenix
- -
- openllmetry
- -
License
- phoenix
- Phoenix is licensed under the Elastic License 2.0 (ELv2), which allows for use, modification, and distribution under certain conditions, but also includes patent protection for some code portions.
- openllmetry
- Apache-2.0
Last pushed
- phoenix
- Sep 18, 2026
- openllmetry
- Sep 17, 2026
Categories
- phoenix
- Evaluation & Observability
- openllmetry
- Evaluation & Observability
Trust and health
Open issues (now)
- phoenix
- 1.0k
- openllmetry
- 679
Stars delta
- phoenix
- +681 (30d)
- openllmetry
- +61 (30d)
Open issues delta
- phoenix
- +164 (30d)
- openllmetry
- +41 (30d)
OSV dependency advisories
- phoenix
- No lockfile (source not queried)
- openllmetry
- Published findings
Full report
- phoenix
- Trust report
- openllmetry
- Trust report
Typed relationship
phoenix alternative openllmetryBoth Openllmetry and Phoenix offer open-source observability tools for LLM applications, making them alternatives in the space.
Choose phoenix if…
- License: phoenix is Other, openllmetry is Apache-2.0.
- Pricing: The pricing model for Phoenix is not specified in the provided repository data..
- Requirements: Phoenix is written in Python and requires a Python environment to run..
- Both Openllmetry and Phoenix offer open-source observability tools for LLM applications, making them alternatives in the space.
- Tags unique to phoenix: agents, ai-monitoring, ai-observability, llm-evaluation.
- phoenix ships Docker support for self-hosted deployment.
- Use Phoenix when you need comprehensive observability features for your AI models and systems, as it is specifically designed to provide detailed insights into model performance and behavior.
When NOT to use phoenix
- Avoid Phoenix if your project requires a tool that is not covered by the Elastic License 2.0, as Phoenix is licensed under this specific license.
- Do not use Phoenix if your project strictly avoids tools with patent-protected code, as Phoenix includes portions of code that are patent protected.
Choose openllmetry if…
- License: openllmetry is Apache-2.0, phoenix is Other.
- Both Openllmetry and Phoenix offer open-source observability tools for LLM applications, making them alternatives in the space.
- Tags unique to openllmetry: artifical-intelligence, datascience, generative-ai, llm.
- When you are working on GenAI or LLM applications and need observability features that are specifically tailored for these types of applications.
When NOT to use openllmetry
- If your application is not in Python, as OpenLLMetry's primary support is for Python applications, limiting its utility for other languages.
- When you need a tool that offers more than just observability features, as OpenLLMetry focuses specifically on monitoring and metrics for GenAI and LLM applications and may not cover other aspects of
Explore
Sources
Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.
- GitHub stars (Arize-ai/phoenix) · observed Sep 20, 2026
- GitHub forks (Arize-ai/phoenix) · observed Sep 20, 2026
- Last push (Arize-ai/phoenix) · observed Sep 18, 2026
- License file (Other) · observed Sep 20, 2026
- Decision facts (enrichment) · observed Sep 18, 2026
- Trust scan (lockfile / OSV) · observed Sep 18, 2026
- GitHub stars (traceloop/openllmetry) · observed Sep 20, 2026
- GitHub forks (traceloop/openllmetry) · observed Sep 20, 2026
- Last push (traceloop/openllmetry) · observed Sep 17, 2026
- License file (Apache-2.0) · observed Sep 20, 2026
- Decision facts (enrichment) · observed Sep 18, 2026
- Trust scan (lockfile / OSV) · observed Sep 18, 2026
GitHub stars on cards: phoenix 12k · openllmetry 7.4k (synced Sep 20, 2026).
Common questions
- What is the difference between phoenix and openllmetry?
- phoenix: AI Observability & Evaluation. openllmetry: Open-source observability for GenAI or LLM applications based on OpenTelemetry. See the comparison table for live GitHub stats and shared categories.
- When should I choose phoenix over openllmetry?
- Choose phoenix over openllmetry when License: phoenix is Other, openllmetry is Apache-2.0; Pricing: The pricing model for Phoenix is not specified in the provided repository data.; Requirements: Phoenix is written in Python and requires a Python environment to run.; Both Openllmetry and Phoenix offer open-source observability tools for LLM applications, making them alternatives in the space; Tags unique to phoenix: agents, ai-monitoring, ai-observability, llm-evaluation; phoenix ships Docker support for self-hosted deployment; Use Phoenix when you need comprehensive observability features for your AI models and systems, as it is specifically designed to provide detailed insights into model performance and behavior.
- When should I choose openllmetry over phoenix?
- Choose openllmetry over phoenix when License: openllmetry is Apache-2.0, phoenix is Other; Both Openllmetry and Phoenix offer open-source observability tools for LLM applications, making them alternatives in the space; Tags unique to openllmetry: artifical-intelligence, datascience, generative-ai, llm; When you are working on GenAI or LLM applications and need observability features that are specifically tailored for these types of applications.
- When should I avoid phoenix?
- Avoid Phoenix if your project requires a tool that is not covered by the Elastic License 2.0, as Phoenix is licensed under this specific license. Do not use Phoenix if your project strictly avoids tools with patent-protected code, as Phoenix includes portions of code that are patent protected.
- When should I avoid openllmetry?
- If your application is not in Python, as OpenLLMetry's primary support is for Python applications, limiting its utility for other languages. When you need a tool that offers more than just observability features, as OpenLLMetry focuses specifically on monitoring and metrics for GenAI and LLM applications and may not cover other aspects of
- Is phoenix or openllmetry more popular on GitHub?
- phoenix has more GitHub stars (11,528 vs 7,438). Stars measure visibility, not whether either tool fits your constraints.
- Are phoenix and openllmetry open source?
- Yes - both are open-source projects on GitHub (phoenix: Other, openllmetry: Apache-2.0).
- Where can I find alternatives to phoenix or openllmetry?
- GraphCanon lists graph-backed alternatives at phoenix alternatives and openllmetry alternatives (phoenix markdown twin, openllmetry 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, phoenix or openllmetry?
- phoenix: Very active. openllmetry: 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 phoenix and openllmetry?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: phoenix trust report; openllmetry trust report.