diff --git a/packages/ai/src/providers/google-vertex.ts b/packages/ai/src/providers/google-vertex.ts
index 391ccd0c9ce..9f8b25ea4ec 100644
--- a/packages/ai/src/providers/google-vertex.ts
+++ b/packages/ai/src/providers/google-vertex.ts
@@ -91,7 +91,7 @@ const configuredRoute = (input: Config, modelID: string | ModelID) => {
       provider: id,
       message: "Google Vertex tuned models do not support Express Mode API keys",
     })
-  const location = GoogleVertexShared.location(inputLocation, "us-central1")
+  const location = GoogleVertexShared.location(inputLocation, "global")
   const project = GoogleVertexShared.project(inputProject)
   const endpoint =
     baseURL ??
diff --git a/packages/core/src/plugin/provider/google-vertex.ts b/packages/core/src/plugin/provider/google-vertex.ts
index b31fd9afef5..8127babee13 100644
--- a/packages/core/src/plugin/provider/google-vertex.ts
+++ b/packages/core/src/plugin/provider/google-vertex.ts
@@ -20,7 +20,7 @@ function resolveLocation(options: Record<string, any>) {
     process.env.GOOGLE_VERTEX_LOCATION ??
     process.env.GOOGLE_CLOUD_LOCATION ??
     process.env.VERTEX_LOCATION ??
-    "us-central1"
+    "global"
   )
 }
 
diff --git a/packages/core/test/plugin/provider-google-vertex.test.ts b/packages/core/test/plugin/provider-google-vertex.test.ts
index a74ffae8c96..3f40731866b 100644
--- a/packages/core/test/plugin/provider-google-vertex.test.ts
+++ b/packages/core/test/plugin/provider-google-vertex.test.ts
@@ -277,7 +277,7 @@ describe("GoogleVertexPlugin", () => {
     }),
   )
 
-  it.effect("defaults location to us-central1 when only project is configured", () =>
+  it.effect("defaults location to global when only project is configured", () =>
     withEnv(
       {
         GOOGLE_CLOUD_PROJECT: undefined,
@@ -299,7 +299,7 @@ describe("GoogleVertexPlugin", () => {
           yield* addPlugin()
           const provider = required(yield* catalog.get(Provider.ID.make("google-vertex")))
           expect(provider.settings?.project).toBe("config-project")
-          expect(provider.settings?.location).toBe("us-central1")
+          expect(provider.settings?.location).toBe("global")
         }),
     ),
   )