diff --git a/packages/coding-agent/CHANGELOG.md b/packages/coding-agent/CHANGELOG.md
index 14334fddd..ef6d273c3 100644
--- a/packages/coding-agent/CHANGELOG.md
+++ b/packages/coding-agent/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## [Unreleased]
 
+### Fixed
+
+- Fixed the welcome banner displaying a stale model name when the session's active model changes after startup (e.g. after a delayed config load or an explicit `/model` switch). The banner now subscribes to `model_changed` events and calls `WelcomeComponent.setModel()`, which already existed but was never wired up.
+
 ## [17.3.0] - 2026-08-13
 
 ### Breaking Changes
diff --git a/packages/coding-agent/src/modes/interactive-mode.ts b/packages/coding-agent/src/modes/interactive-mode.ts
index acf8f49d4..1c700712f 100644
--- a/packages/coding-agent/src/modes/interactive-mode.ts
+++ b/packages/coding-agent/src/modes/interactive-mode.ts
@@ -1170,6 +1170,9 @@ export class InteractiveMode implements InteractiveModeContext {
 
 		this.#eventBusUnsubscribers.push(
 			this.session.subscribe(event => {
+				if (event.type === "model_changed") {
+					this.#updateWelcomeModel();
+				}
 				void this.#handleGoalSessionEvent(event);
 			}),
 			onStatusLineSessionAccentChanged(() => {
@@ -4423,6 +4426,17 @@ export class InteractiveMode implements InteractiveModeContext {
 		);
 	}
 
+	#updateWelcomeModel(): void {
+		if (!this.#welcomeComponent) {
+			return;
+		}
+
+		this.#welcomeComponent.setModel(
+			this.session.model?.name ?? "Unknown",
+			this.session.model?.provider ?? "Unknown",
+		);
+	}
+
 	#updateWelcomeLspServers(): void {
 		if (!this.#welcomeComponent) {
 			return;
diff --git a/packages/coding-agent/test/modes/components/welcome.test.ts b/packages/coding-agent/test/modes/components/welcome.test.ts
index f1d5997d1..5379f99b0 100644
--- a/packages/coding-agent/test/modes/components/welcome.test.ts
+++ b/packages/coding-agent/test/modes/components/welcome.test.ts
@@ -62,3 +62,21 @@ describe("WelcomeComponent tips", () => {
 		expect(pickWeightedTip([], 0.5)).toBe("");
 	});
 });
+
+describe("WelcomeComponent model name", () => {
+	beforeAll(async () => {
+		await Settings.init({ inMemory: true });
+		await initTheme(false);
+	});
+
+	it("updates the rendered model name after setModel()", () => {
+		const welcome = new WelcomeComponent("1.0.0", "DeepSeek V4 Pro", "deepseek");
+		const before = welcome.render(100).join("\n");
+		expect(before).toContain("DeepSeek V4 Pro");
+
+		welcome.setModel("GLM-5.2", "zhipu-coding-plan");
+		const after = welcome.render(100).join("\n");
+		expect(after).toContain("GLM-5.2");
+		expect(after).not.toContain("DeepSeek V4 Pro");
+	});
+});