
6 min read—May 8, 2026
The AI Evals & Observability Stack in 2026: Langfuse vs Braintrust vs Arize
Eval coverage and observability are now table-stakes for production AI. A practical comparison of Langfuse, Braintrust, and Arize — when to pick each, what they cost, and how to wire them into a CI pipeline that catches regressions before customers do.
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