A side-by-side of two observability for building AI agents — live GitHub data, languages, and what each is best at.
| Phoenix | Helicone | |
|---|---|---|
| GitHub stars | ★ 10k | ★ 5.9k |
| Language | Jupyter Notebook | TypeScript |
| Category | Observability | Observability |
| Best for | OTel tracing | cost tracking |
| Repository | Arize-ai/phoenix | Helicone/helicone |
Phoenix and Helicone are both credible choices. By community traction, Phoenix leads (★ 10k). Pick Phoenix for OTel tracing; pick Helicone for cost tracking.
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