compare
Arize Phoenix vs Laminar
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | Arize Phoenix | Laminar |
|---|---|---|
| Language | Python | TypeScript |
| Licence | Other | Apache-2.0 |
| Stars | 12k | 3.3k |
| Latest | arize-phoenix-v20.19.0 | v0.2.5 |
| Last push | 2026-10-06 | 2026-10-06 |
| Release cadence | about 1 day between releases | about 7 days between releases |
| Active contributors | 55+ commit authors on the default branch in the last 90 days | 8 commit authors on the default branch in the last 90 days |
| Flags | none | none |
How they relate
Both replace LangSmith. Alternatives to LangSmith →
Full replacementArize PhoenixTracing over OpenTelemetry, datasets, experiments and evaluations.
Full replacementLaminarTracing, evaluations and datasets for LLM apps and agents, with OpenTelemetry ingestion.
Arize Phoenix
- arize-phoenix-v20.19.02026-10-01arize-phoenix: v20.19.0
- @arizeai/phoenix-mcp@4.3.152026-09-30Updated dependencies [f8ae2fc]
- @arizeai/phoenix-cli@1.18.72026-09-30Updated dependencies [f8ae2fc]
- @arizeai/phoenix-client@7.16.02026-09-30f8ae2fc: Add listProjectAnnotationConfigs, assignProjectAnnotationConfig, unassignProjectAnnotationConfig, and setProje…
- arize-phoenix-v20.18.02026-09-30arize-phoenix: v20.18.0
Laminar
- v0.2.52026-09-13LAM-2218: log SQL memory-limit hits at warn instead of error by @laminar-coding-agent[bot] in
- v0.2.42026-09-06chore(frontend): replace ESLint + Prettier with oxlint + oxfmt
- v0.2.32026-08-30LAM-2111: log ingestion rate-limit rejections by @laminar-coding-agent[bot] in
- v0.2.22026-08-25LAM-1903: virtualize debugger session timeline with lazy batched trace loading by @laminar-coding-agent[bot] in
- v0.2.12026-07-09refactor(LAM-1789): sync signals OTEL tracing refactor to OSS by @laminar-coding-agent[bot] in
Arize Phoenix
✓ signed The latest release, arize-phoenix-v20.19.0, carries a signature GitHub verified.
Loading the security report
Laminar
✓ signed The latest release, v0.2.5, carries a signature GitHub verified.
Loading the security report