compare
Evidently vs Langfuse
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | Evidently | Langfuse |
|---|---|---|
| Language | Jupyter Notebook | TypeScript |
| Licence | Apache-2.0 | Other |
| Stars | 8k | 35k |
| Latest | v0.7.23 | v4.53.0 |
| 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 | 33+ 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 replacementLangfuseTracing, prompt management, datasets and evaluations, with OpenTelemetry ingestion.
Evidently
Langfuse
- v4.53.02026-10-06feat(ai-gateway): expose resolution context in response headers, spans and logs
- v4.52.02026-10-06feat(trace-batch): bound batches by estimated weight and exclude oversized traces
- v4.51.02026-10-05feat(mcp): support decision-model evaluators
- v4.50.02026-10-02feat(web): show error id in tRPC error toast and include it in issue reports
- v4.49.02026-10-01feat(web): add org-level ingestion overview tRPC route
Evidently
unsigned The latest release, v0.7.23, carries no signature GitHub could verify.
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Langfuse
unsigned The latest release, v4.53.0, carries no signature GitHub could verify.
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