Dispatch
Vercel adds always-on tracing that samples live production traffic at $0.50 per million span units
Vercel's always-on tracing continuously samples production and preview traffic so you can debug a real user request without reproducing it, unlike session tracing which only captures requests from your own browser. Nothing is collected until you add a sampling rule scoped by environment and optional path, so billing is opt-in at $0.50 per 1M span units. Retention is 1 hour on Hobby, 1 day on Pro, 3 days on Enterprise; infrastructure and outbound fetch spans come free, framework and custom spans need @vercel/otel.
↳ Follow the thread