Lever guide
What one lever does, its risk control, and how a policy enables it.
Lever 13
Cross-provider switch
A cheaper model from another provider you connected, only after a replay of your own requests holds quality.
Risk control
Switching stays inside providers you connect. Disconnecting one removes it. If quality drops after a switch, it is rolled back.
It sits with right-size, cascade, cache and trimming, for chat models. Human review of samples stays off unless you opt in. If only one provider is connected, the move stays on a cheaper model from that provider.
This lever can change the answer a user sees, so it stays off until a shadow test passes the threshold you set.
How a policy turns it on
Routing policies are per route. Tag the route with X-Parezen-Route, then enable the lever on that route in the dashboard. Ignore is recorded. Nothing quality-affecting is enabled without a passed shadow test.
defaultHeaders: {
"X-Parezen-Route": "support-reply",
}