opik vs langfuse

Common questions

What is the difference between opik and langfuse?

opik: Debug, evaluate, and monitor LLM applications, RAG systems, and agentic workflows. langfuse: Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform.. See the comparison table for live GitHub stats and shared categories.

When should I choose opik over langfuse?

Choose opik over langfuse when opik is primarily Python; langfuse is TypeScript; License: opik is Apache-2.0, langfuse is Other; Opik and Langfuse both provide AI observability, evaluation, metrics, and playground features for LLM applications; Tags unique to opik: langchain, llama-index, llm, llm-evaluation; When you need comprehensive tracing and automated evaluations for LLM applications, RAG systems, and agentic workflows.

When should I choose langfuse over opik?

Choose langfuse over opik when langfuse is primarily TypeScript; opik is Python; License: langfuse is Other, opik is Apache-2.0; Opik and Langfuse both provide AI observability, evaluation, metrics, and playground features for LLM applications; Tags unique to langfuse: analytics, monitoring, prompt-management, self-hosted; langfuse ships Docker support for self-hosted deployment; When you need a self-hosted solution for evaluating and monitoring large language model applications, as Langfuse supports local, VM, and Kubernetes environments.

When should I avoid opik?

If you do not require comprehensive tracing and automated evaluations, and simpler monitoring tools suffice. When you prefer not to self-host and manage your own Opik server. If your project is not in Python and you do not want to use the Python SDK. When you need a tool that supports more languages or frameworks beyond Python.

When should I avoid langfuse?

If you are looking for a fully managed service without the need for self-hosting, as Langfuse requires setting up and maintaining the infrastructure yourself. When you need enterprise features that are not covered by the open-source version, as the ee folders are not open-source and may require additional licensing or services.

Is opik or langfuse more popular on GitHub?

langfuse has more GitHub stars (34,763 vs 22,110). Stars measure visibility, not whether either tool fits your constraints.

Are opik and langfuse open source?

Yes - both are open-source projects on GitHub (opik: Apache-2.0, langfuse: Other).

Where can I find alternatives to opik or langfuse?

GraphCanon lists graph-backed alternatives at opik alternatives and langfuse alternatives (opik markdown twin, langfuse markdown twin), ranked by typed relationship edges rather than popularity votes.

Is there a machine-readable version of this comparison?

Yes. The markdown twin at this comparison mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers.

Which is better maintained, opik or langfuse?

opik: Very active. langfuse: Very active. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance.

Where are the full trust reports for opik and langfuse?

GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: opik trust report; langfuse trust report.