Vercel shipped always-on tracing at $0.50 per 1M span units on 21 August 2026, and the pricing doc omits it
Always-on tracing went to beta on 21 August 2026 at $0.50 per 1M span units, a price only the changelog states. Trace retention stops at 3 days even where Observability Plus keeps 30 days of logs.
