diff --git a/.changeset/tidy-facts-admire.md b/.changeset/tidy-facts-admire.md
new file mode 100644
index 000000000..c6414190a
--- /dev/null
+++ b/.changeset/tidy-facts-admire.md
@@ -0,0 +1,5 @@
+---
+"braintrust": minor
+---
+
+feat(invoke): Allow passing `overrides` to `invoke()`
diff --git a/js/src/functions/invoke.ts b/js/src/functions/invoke.ts
index d56754d68..f7bbb35f5 100644
--- a/js/src/functions/invoke.ts
+++ b/js/src/functions/invoke.ts
@@ -111,6 +111,13 @@ export interface InvokeFunctionArgs<
    * if the variable names in the prompt do not match the input keys.
    */
   strict?: boolean;
+  /**
+   * Per-call deep-merge into the resolved function data server-side. Useful for facet,
+   * code, global, and remote_eval functions (for example, overriding a facet's `model`
+   * or a global function's `config`). Has no effect on prompt functions, whose
+   * parameters live on a separate field that the override path does not touch.
+   */
+  overrides?: Record<string, unknown>;
   /**
    * A Zod schema to validate the output of the function and return a typed value. This
    * is only used if `stream` is false.
@@ -159,6 +166,7 @@ export async function invoke<Input, Output, Stream extends boolean = false>(
     mode,
     schema,
     strict,
+    overrides,
     projectId,
     ...functionIdArgs
   } = args;
@@ -204,6 +212,7 @@ export async function invoke<Input, Output, Stream extends boolean = false>(
     stream,
     mode,
     strict,
+    overrides,
   };
 
   const headers: Record<string, string> = {