Comparison
phoenix vs helicone
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 helicone if helicone is an open-source platform for monitoring and evaluating large language models, offering tools for prompt engineering and management.
Markdown twin · phoenix alternatives · helicone alternatives
GraphCanon updated Sep 20, 2026
15views this month
Trust & integrity
| Signal | phoenix | helicone |
|---|---|---|
| Maintenance | Very active (0d since push) As of Sep 18, 2026 · github_public_v1 | Very active (1d 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 |
Tagline
- phoenix
- AI Observability & Evaluation
- helicone
- Open source LLM observability platform
Stars
- phoenix
- 12k
- helicone
- 6.2k
Forks
- phoenix
- 1.1k
- helicone
- 670
Open issues
- phoenix
- 1.0k
- helicone
- 155
Language
- phoenix
- Python
- helicone
- TypeScript
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.
- helicone
- Helicone is an open-source platform for monitoring and evaluating large language models, offering tools for prompt engineering and management.
Persona
- phoenix
- -
- helicone
- -
Runtime
- phoenix
- -
- helicone
- -
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.
- helicone
- Apache-2.0
Last pushed
- phoenix
- Sep 18, 2026
- helicone
- Sep 16, 2026
Categories
- phoenix
- Evaluation & Observability
- helicone
- Evaluation & Observability
Trust and health
Days since push
- phoenix
- 0d
- helicone
- 1d
Open issues (now)
- phoenix
- 1.0k
- helicone
- 155
Stars delta
- phoenix
- +681 (30d)
- helicone
- +89 (30d)
Open issues delta
- phoenix
- +164 (30d)
- helicone
- -15 (30d)
Full report
- phoenix
- Trust report
- helicone
- Trust report
Typed relationship
phoenix helicone
Choose phoenix if…
- phoenix is primarily Python; helicone is TypeScript.
- License: phoenix is Other, helicone 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 helicone - see the relationship row above.
- Tags unique to phoenix: agents, ai-monitoring, ai-observability, llm-evaluation.
- 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 helicone if…
- helicone is primarily TypeScript; phoenix is Python.
- License: helicone is Apache-2.0, phoenix is Other.
- Graph edge: helicone is a typed related of phoenix - see the relationship row above.
- Tags unique to helicone: agent-monitoring, analytics, evaluation, gpt.
- When you need to monitor and evaluate the performance of large language models in real-time.
When NOT to use helicone
- If your project requires proprietary or closed-source tools, as Helicone is open-source and can be self-hosted.
- When you need a platform that does not require setting up an API key and modifying your codebase to integrate monitoring.
- If you are looking for a solution that does not support a wide range of models through a single API, and you prefer platform-specific tools.
- For users who do not want to manage their own infrastructure, as Helicone offers self-hosting options which require local setup and maintenance.
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 (Helicone/helicone) · observed Sep 20, 2026
- GitHub forks (Helicone/helicone) · observed Sep 20, 2026
- Last push (Helicone/helicone) · observed Sep 16, 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 · helicone 6.2k (synced Sep 20, 2026).
Common questions
- What is the difference between phoenix and helicone?
- phoenix: AI Observability & Evaluation. helicone: Open source LLM observability platform. See the comparison table for live GitHub stats and shared categories.
- When should I choose phoenix over helicone?
- Choose phoenix over helicone when phoenix is primarily Python; helicone is TypeScript; License: phoenix is Other, helicone 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 helicone - see the relationship row above; Tags unique to phoenix: agents, ai-monitoring, ai-observability, llm-evaluation; 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 helicone over phoenix?
- Choose helicone over phoenix when helicone is primarily TypeScript; phoenix is Python; License: helicone is Apache-2.0, phoenix is Other; Graph edge: helicone is a typed related of phoenix - see the relationship row above; Tags unique to helicone: agent-monitoring, analytics, evaluation, gpt; When you need to monitor and evaluate the performance of large language models in real-time.
- 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 helicone?
- If your project requires proprietary or closed-source tools, as Helicone is open-source and can be self-hosted. When you need a platform that does not require setting up an API key and modifying your codebase to integrate monitoring. If you are looking for a solution that does not support a wide range of models through a single API, and you prefer platform-specific tools. For users who do not want to manage their own infrastructure, as Helicone offers self-hosting options which require local setup and maintenance.
- Is phoenix or helicone more popular on GitHub?
- phoenix has more GitHub stars (11,528 vs 6,162). Stars measure visibility, not whether either tool fits your constraints.
- Are phoenix and helicone open source?
- Yes - both are open-source projects on GitHub (phoenix: Other, helicone: Apache-2.0).
- Where can I find alternatives to phoenix or helicone?
- GraphCanon lists graph-backed alternatives at phoenix alternatives and helicone alternatives (phoenix markdown twin, helicone 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 helicone?
- phoenix: Very active. helicone: 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 helicone?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: phoenix trust report; helicone trust report.