compare
Helicone vs Langfuse
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | Helicone | Langfuse |
|---|---|---|
| Language | TypeScript | TypeScript |
| Licence | Apache-2.0 | Other |
| Stars | 6.2k | 35k |
| Latest | v2025.08.21-1 | v4.53.0 |
| Last push | 2026-09-16 | 2026-10-06 |
| Release cadence | about 1 day 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 →
PartialHeliconeLogs requests through a proxy gateway, with cost tracking and prompt versions, lighter on agent traces and evaluations.
Full replacementLangfuseTracing, prompt management, datasets and evaluations, with OpenTelemetry ingestion.
Helicone
- v2025.08.21-12025-08-21
- v2025.08.212025-08-21
- v2025.08.202025-08-20
- v1.0.02025-08-19v1.0.0 Docker image release
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
Helicone
unsigned The latest release, v2025.08.21-1, 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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