What are the best alternatives to Fiddler AI?

The top alternatives to Fiddler AI are PostHog, SafetyBench Eval, Langfuse, ranked by real usage data on Unfragile.

Are there free alternatives to Fiddler AI?

Yes, 20 free alternatives to Fiddler AI exist, including PostHog, SafetyBench Eval, Langfuse.

20 alternatives ranked by real usage data. Fiddler AI scores 57/100 — 13 tools score higher.

Enterprise AI observability with explainability and fairness for regulated industries.

20 alternatives

20 free options

13 score higher

Open-source product analytics with LLM observability — traces, costs, evals unified with product metrics.