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