Langfuse vs Opik
Both Langfuse and Opik are self-hosted alternatives to LangSmith.
Side by side
| Field | Langfuse | Opik |
|---|---|---|
| Description | LLM engineering platform for model tracing, prompt management, and application evaluation. Langfuse helps teams collaboratively debug, analyze, and iterate on their LLM applications such as chatbots or AI agents. | Evaluate, test, and ship LLM applications with a suite of observability tools to calibrate language model outputs across your dev and production lifecycle. |
| GitHub stars | 36,848 | 23,101 |
| License | MIT | Apache-2.0 |
| Platforms | Docker | Docker, Python |
| Latest release | v4.72.0, 29 October 2026 | 2.2.137, 30 October 2026 |
| Repository activity | 1 November 2026 | 30 October 2026 |
| Health | Active | Active |
| Categories | Software Development - IDE & Tools | Software Development - API Management |
| Website | https://langfuse.com | https://www.comet.com/site/products/opik/ |
| Source code | https://github.com/langfuse/langfuse | https://github.com/comet-ml/opik |
Where the records differ
Computed from the two records above: a line appears only where the dataset states a figure, a date or a set relation, and no line recommends one application over the other.
- Langfuse has more GitHub stars in the dataset, 36,848 against 23,101.
- Langfuse recorded repository activity more recently, 1 November 2026 against 30 October 2026.
- Opik has the newer release on record: 2.2.137, 30 October 2026, against v4.72.0, 29 October 2026.
- Licenses differ: Langfuse is listed under MIT; Opik under Apache-2.0.
- Platforms differ: Langfuse lists Docker; Opik lists Docker, Python.
- Langfuse is filed under Software Development - IDE & Tools; Opik is filed under Software Development - API Management.