diff --git a/examples/agents/main.go b/examples/agents/main.go
index 574787b..fb0b2b5 100644
--- a/examples/agents/main.go
+++ b/examples/agents/main.go
@@ -6,7 +6,7 @@
 // Runs against the outward /api/v3/agents endpoint. Requires:
 //
 //	export ARK_API_KEY=...
-//	export ARK_MODEL_ID=doubao-seed-2-1-pro   # or whatever you have access to
+//	export ARK_MODEL_ID=doubao-seed-2-1-pro-260628   # or whatever you have access to
 //	go run examples/agents/main.go
 package main
 
diff --git a/examples/listinputitems/main.go b/examples/listinputitems/main.go
index 1e140c9..ef3475b 100644
--- a/examples/listinputitems/main.go
+++ b/examples/listinputitems/main.go
@@ -25,7 +25,7 @@ func main() {
 	ctx := context.Background()
 
 	resp, err := client.CreateResponses(ctx, &responses.ResponsesRequest{
-		Model: "doubao-seed-2-1-pro",
+		Model: "doubao-seed-2-1-pro-260628",
 		Input: responses.NewStringResponsesInput("hello"),
 	})
 	if err != nil {
diff --git a/examples/responses/basic/main.go b/examples/responses/basic/main.go
index bad4ea6..16e7335 100644
--- a/examples/responses/basic/main.go
+++ b/examples/responses/basic/main.go
@@ -41,7 +41,7 @@ func main() {
 	}
 
 	req := &responses.ResponsesRequest{
-		Model: "doubao-seed-2-1-pro",
+		Model: "doubao-seed-2-1-pro-260628",
 		Input: responses.NewInputItemArrayResponsesInput([]responses.InputItem{inputItem}),
 	}
 
diff --git a/examples/responses/doubao_app/main.go b/examples/responses/doubao_app/main.go
index 22be256..247db4f 100644
--- a/examples/responses/doubao_app/main.go
+++ b/examples/responses/doubao_app/main.go
@@ -24,7 +24,7 @@ import (
 )
 
 const (
-	modelName    = "doubao-seed-2-1-pro"
+	modelName    = "doubao-seed-2-1-pro-260628"
 	doubaoHeader = "ark-beta-doubao-app"
 )
 
diff --git a/examples/responses/function_call/main.go b/examples/responses/function_call/main.go
index 5c45cb5..e9bd689 100644
--- a/examples/responses/function_call/main.go
+++ b/examples/responses/function_call/main.go
@@ -24,7 +24,7 @@ import (
 	"github.com/volcengine/ark-runtime-go/arkruntime/model/responses"
 )
 
-const modelName = "doubao-seed-2-1-pro"
+const modelName = "doubao-seed-2-1-pro-260628"
 
 func main() {
 	client := arkruntime.NewClientWithApiKey(os.Getenv("ARK_API_KEY"))
diff --git a/examples/responses/mcp/main.go b/examples/responses/mcp/main.go
index 5cef739..81dd34f 100644
--- a/examples/responses/mcp/main.go
+++ b/examples/responses/mcp/main.go
@@ -25,7 +25,7 @@ import (
 )
 
 const (
-	modelName     = "doubao-seed-2-1-pro"
+	modelName     = "doubao-seed-2-1-pro-260628"
 	mcpServerURL  = "https://mcp.deepwiki.com/mcp"
 	mcpLabel      = "deepwiki"
 	mcpBetaHeader = "ark-beta-mcp"
diff --git a/examples/responses/web_search/main.go b/examples/responses/web_search/main.go
index 2c55c0a..9278f6f 100644
--- a/examples/responses/web_search/main.go
+++ b/examples/responses/web_search/main.go
@@ -20,7 +20,7 @@ import (
 	"github.com/volcengine/ark-runtime-go/arkruntime/model/responses"
 )
 
-const modelName = "doubao-seed-2-1-pro"
+const modelName = "doubao-seed-2-1-pro-260628"
 
 func main() {
 	stream()
diff --git a/examples/sessions_loop/main.go b/examples/sessions_loop/main.go
index aad5a74..dc1613c 100644
--- a/examples/sessions_loop/main.go
+++ b/examples/sessions_loop/main.go
@@ -14,7 +14,7 @@
 //	GET    /api/v3/sessions/:id/events (stream) (StreamSessionEvents — SSE)
 //
 //	export ARK_API_KEY=...
-//	export ARK_MODEL_ID=doubao-seed-2-1-pro
+//	export ARK_MODEL_ID=doubao-seed-2-1-pro-260628
 //	go run examples/sessions_loop/main.go
 package main