Arize Phoenix alternatives
The best Arize Phoenix alternatives are LangSmith, Helicone, Langfuse, Braintrust, Weights & Biases. All sit in Eval & observability and are curated by hand, so each one is a genuine substitute rather than a directory listing.
- 1LangSmithToolTrace, test, and debug LLM apps in production.
- 2HeliconeToolMonitor LLM cost, latency, and usage in one dashboard.
- 3LangfuseToolOpen-source tracing and evals for LLM apps.
- 4BraintrustToolEvaluate and improve AI products with systematic evals.
- 5Weights & BiasesToolTrack experiments, models, and LLM apps in one place.
Every entry here is hand-checked . We sweep the catalog for dead links and stale entries rather than scraping a registry. That is the whole difference between this and a directory with twelve thousand listings, most of which no longer resolve.