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LoadingSide-by-side comparison of Weights & Biases Weave and Langfuse across fit, pricing, docs, evidence gaps, and benchmarks.
Observability
Langfuse
Best combined signal across API availability, docs, adoption, reviews, and ecosystem proof.
Best OSS/self-hosted
Langfuse
Start here when local control, inspectability, or self-hosting matters.
Best managed/production
Langfuse
Strongest shortlist signal for API availability, docs, and operational maturity.
Decision notes
Adoption proof: No verified adoption proof yet
Reviews: No developer reviews yet
Repo stars: Langfuse
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Missing evidence and weekly return
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Observability
| Feature | ||
|---|---|---|
| Category | Observability | Observability |
| Pricing | Open source | Freemium |
| Open source | ||
| API available | ||
| Rating | No reviews | No reviews |
| GitHub stars | 1,102 | 29,121 |
| Adoption | Public evidence pending | Public evidence pending |
| Benchmark | No benchmark data | No benchmark data |
| Best for | Tracing, evals, monitoring, and LLM app quality | Tracing, evals, monitoring, and LLM app quality |
| Developer tradeoff | More control and inspectability, but more setup and operational ownership. | More control and inspectability, but more setup and operational ownership. |
