Model rewrites
Point a model name an app sends at the model the provider should receive.
The Model rewrites page maps a model name the client sends to the model the provider receives. The rewrite is applied after the allowlist check, so the target does not need to be in the allowed models, and usage records the rewritten model.
A rewrite is how you move an app to a newer model without a release: the app
keeps asking for gpt-5.6-terra and you point that name at gpt-5.6-sol. For a
bigger change, such as a different provider or fixed parameters, use a
custom endpoint.
Rewrite targets are checked against the price catalog, not against your providers, so they can be saved before the provider exists.
In the configuration
"routing": {
"model_rewrites": { "gpt-5.6-terra": "gpt-5.6-sol" }
}model_rewrites maps the model name a client sends to the one the provider
receives. Both sides are the provider's own model names.