What is changing across AI Observability?
Teams praise LangSmith's trace-level debugging, and setup rarely stops anyone. Public accounts show what traces exposed, the evals teams built from them, and why some moved to another tool.
Also covers Langfuse and Arize
For 200,000 traces a month and 10 users, GILD calculates US$199 to US$369 on Langfuse and US$1,340 on LangSmith Plus; Arize AX Pro came to US$1,610 at the US$0.0008 per-span overage Arize listed on Oct 25, 2026, a rate its pricing page no longer shows. Each tool meters a different unit, so trace depth and retention decide the bill.
Also covers Langfuse and Arize
