compare
Evidently vs LangWatch
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | Evidently | LangWatch |
|---|---|---|
| Language | Jupyter Notebook | TypeScript |
| Licence | Apache-2.0 | Apache-2.0 |
| Stars | 8k | 4.9k |
| Latest | v0.7.23 | langwatch-3.20.1 |
| Last push | 2026-09-29 | 2026-10-06 |
| Release cadence | about 37 days between releases | about 1 day between releases |
| Active contributors | 3 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 →
PartialEvidentlyEvaluations and monitoring for ML and LLM systems, from a Python library with a self-hosted UI.
Full replacementLangWatchTracing, evaluations and agent simulations, with OpenTelemetry ingestion.
Evidently
LangWatch
- langwatch-3.20.12026-10-02Helm chart for LangWatch application
- v3.20.12026-10-02@langwatch/server@3.20.1 — aigateway monobinaries
- langwatch@v3.20.12026-10-02langwatch: v3.20.1
- langwatch-3.20.02026-10-02Helm chart for LangWatch application
- v3.20.02026-10-02@langwatch/server@3.20.0 — aigateway monobinaries
Evidently
unsigned The latest release, v0.7.23, carries no signature GitHub could verify.
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LangWatch
unsigned The latest release, langwatch-3.20.1, carries no signature GitHub could verify.
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