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Comparison

phoenix vs opik

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 opik if opik is a tool for debugging, evaluating, and monitoring LLM applications, RAG systems, and agentic workflows. It supports self-hosting and provides a Python SDK for easy integration.

Markdown twin · phoenix alternatives · opik alternatives

GraphCanon updated Sep 20, 2026

22views this month

phoenix logo

phoenix

Arize-ai/phoenix

★ 12kpushed Sep 18, 2026
vs
opik logo

opik

comet-ml/opik

★ 22kpushed Sep 18, 2026

Trust & integrity

Signalphoenixopik
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
No lockfile (source not queried)
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
phoenix trust reportopik trust reportTrust methodology

Tagline

phoenix
AI Observability & Evaluation
opik
Debug, evaluate, and monitor LLM applications, RAG systems, and agentic workflows

Stars

phoenix
12k
opik
22k

Forks

phoenix
1.1k
opik
1.8k

Open issues

phoenix
1.0k
opik
266

Language

phoenix
Python
opik
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.
opik
Opik is a tool for debugging, evaluating, and monitoring LLM applications, RAG systems, and agentic workflows. It supports self-hosting and provides a Python SDK for easy integration.

Persona

phoenix
-
opik
-

Runtime

phoenix
-
opik
-

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.
opik
Apache-2.0

Last pushed

phoenix
Sep 18, 2026
opik
Sep 18, 2026

Categories

phoenix
Evaluation & Observability
opik
Evaluation & Observability

Trust and health

Open issues (now)

phoenix
1.0k
opik
266

Stars delta

phoenix
+681 (30d)
opik
+933 (30d)

Open issues delta

phoenix
+164 (30d)
opik
+94 (30d)

Full report

phoenix
Trust report
opik
Trust report

Typed relationship

phoenix related opik

Choose phoenix if…

  • License: phoenix is Other, opik 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..
  • Graph edge: phoenix is a typed related of opik - see the relationship row above.
  • Tags unique to phoenix: agents, ai-monitoring, ai-observability, llmops.
  • 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.
GitHubDetails

Choose opik if…

  • License: opik is Apache-2.0, phoenix is Other.
  • Graph edge: opik is a typed related of phoenix - see the relationship row above.
  • Tags unique to opik: evaluation, langchain, llama-index, llm.
  • When you need comprehensive tracing and automated evaluations for LLM applications, RAG systems, and agentic workflows.

When NOT to use opik

  • If you do not require comprehensive tracing and automated evaluations, and simpler monitoring tools suffice.
  • When you prefer not to self-host and manage your own Opik server.
  • If your project is not in Python and you do not want to use the Python SDK.
  • When you need a tool that supports more languages or frameworks beyond Python.
GitHubDetails

Explore

phoenix trust report →opik trust report →Evaluation & Observability category →All comparisonsStack workflowsTrending tools

Sources

Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.

GitHub stars on cards: phoenix 12k · opik 22k (synced Sep 20, 2026).

Common questions

What is the difference between phoenix and opik?
phoenix: AI Observability & Evaluation. opik: Debug, evaluate, and monitor LLM applications, RAG systems, and agentic workflows. See the comparison table for live GitHub stats and shared categories.
When should I choose phoenix over opik?
Choose phoenix over opik when License: phoenix is Other, opik 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.; Graph edge: phoenix is a typed related of opik - see the relationship row above; Tags unique to phoenix: agents, ai-monitoring, ai-observability, llmops; 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 opik over phoenix?
Choose opik over phoenix when License: opik is Apache-2.0, phoenix is Other; Graph edge: opik is a typed related of phoenix - see the relationship row above; Tags unique to opik: evaluation, langchain, llama-index, llm; When you need comprehensive tracing and automated evaluations for LLM applications, RAG systems, and agentic workflows.
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 opik?
If you do not require comprehensive tracing and automated evaluations, and simpler monitoring tools suffice. When you prefer not to self-host and manage your own Opik server. If your project is not in Python and you do not want to use the Python SDK. When you need a tool that supports more languages or frameworks beyond Python.
Is phoenix or opik more popular on GitHub?
opik has more GitHub stars (22,110 vs 11,528). Stars measure visibility, not whether either tool fits your constraints.
Are phoenix and opik open source?
Yes - both are open-source projects on GitHub (phoenix: Other, opik: Apache-2.0).
Where can I find alternatives to phoenix or opik?
GraphCanon lists graph-backed alternatives at phoenix alternatives and opik alternatives (phoenix markdown twin, opik 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 opik?
phoenix: Very active. opik: 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 opik?
GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: phoenix trust report; opik trust report.

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