diff --git a/.changeset/realtime-url-configurable.md b/.changeset/realtime-url-configurable.md
deleted file mode 100644
index aa7bb5cc..00000000
--- a/.changeset/realtime-url-configurable.md
+++ /dev/null
@@ -1,5 +0,0 @@
----
-'@openai/agents-realtime': minor
----
-
-Expose configurable URL in OpenAIRealtimeWebSocket constructor and RealtimeSession.connect.
diff --git a/packages/agents-realtime/src/openaiRealtimeWebsocket.ts b/packages/agents-realtime/src/openaiRealtimeWebsocket.ts
index d548b361..0ce09c43 100644
--- a/packages/agents-realtime/src/openaiRealtimeWebsocket.ts
+++ b/packages/agents-realtime/src/openaiRealtimeWebsocket.ts
@@ -47,10 +47,6 @@ export type OpenAIRealtimeWebSocketOptions = {
    * @see https://platform.openai.com/docs/guides/realtime#creating-an-ephemeral-token
    */
   useInsecureApiKey?: boolean;
-  /**
-   * The URL to use for the WebSocket connection.
-   */
-  url?: string;
 } & OpenAIRealtimeBaseOptions;
 
 /**
@@ -63,7 +59,7 @@ export class OpenAIRealtimeWebSocket
   implements RealtimeTransportLayer
 {
   #apiKey: string | undefined;
-  #url: string | undefined;
+  #url: string;
   #state: WebSocketState = {
     status: 'disconnected',
     websocket: undefined,
@@ -84,7 +80,7 @@ export class OpenAIRealtimeWebSocket
 
   constructor(options: OpenAIRealtimeWebSocketOptions = {}) {
     super(options);
-    this.#url = options.url;
+    this.#url = `wss://api.openai.com/v1/realtime?model=${this.currentModel}`;
     this.#useInsecureApiKey = options.useInsecureApiKey ?? false;
   }
 
@@ -173,7 +169,7 @@ export class OpenAIRealtimeWebSocket
           },
         };
 
-    const ws = new WebSocket(this.#url!, websocketArguments as any);
+    const ws = new WebSocket(this.#url, websocketArguments as any);
     this.#state = {
       status: 'connecting',
       websocket: ws,
@@ -264,11 +260,9 @@ export class OpenAIRealtimeWebSocket
     const model = options.model ?? this.currentModel;
     this.currentModel = model;
     this.#apiKey = await this._getApiKey(options);
-    const url =
+    this.#url =
       options.url ??
-      this.#url ??
       `wss://api.openai.com/v1/realtime?model=${this.currentModel}`;
-    this.#url = url;
 
     const sessionConfig: Partial<RealtimeSessionConfig> = {
       ...(options.initialSessionConfig || {}),
diff --git a/packages/agents-realtime/src/realtimeSession.ts b/packages/agents-realtime/src/realtimeSession.ts
index e05e5148..62738ac7 100644
--- a/packages/agents-realtime/src/realtimeSession.ts
+++ b/packages/agents-realtime/src/realtimeSession.ts
@@ -672,7 +672,6 @@ export class RealtimeSession<
     await this.#transport.connect({
       apiKey: options.apiKey ?? this.options.apiKey,
       model: this.options.model,
-      url: options.url,
       initialSessionConfig: await this.#getSessionConfig(this.options.config),
     });
 
diff --git a/packages/agents-realtime/test/openaiRealtimeWebsocket.test.ts b/packages/agents-realtime/test/openaiRealtimeWebsocket.test.ts
index 91572a49..3403a6b6 100644
--- a/packages/agents-realtime/test/openaiRealtimeWebsocket.test.ts
+++ b/packages/agents-realtime/test/openaiRealtimeWebsocket.test.ts
@@ -58,14 +58,6 @@ describe('OpenAIRealtimeWebSocket', () => {
     expect(statuses).toEqual(['connecting', 'connected']);
   });
 
-  it('uses custom url from constructor', async () => {
-    const ws = new OpenAIRealtimeWebSocket({ url: 'ws://test' });
-    const p = ws.connect({ apiKey: 'ek_test', model: 'm' });
-    await vi.runAllTimersAsync();
-    await p;
-    expect(lastFakeSocket!.url).toBe('ws://test');
-  });
-
   it('handles audio delta, speech started and created/done events', async () => {
     const ws = new OpenAIRealtimeWebSocket();
     const audioSpy = vi.fn();
diff --git a/packages/agents-realtime/test/realtimeSession.test.ts b/packages/agents-realtime/test/realtimeSession.test.ts
index 648b5197..dfb4e6d5 100644
--- a/packages/agents-realtime/test/realtimeSession.test.ts
+++ b/packages/agents-realtime/test/realtimeSession.test.ts
@@ -113,14 +113,6 @@ describe('RealtimeSession', () => {
     expect(transport.closeCalls).toBe(1);
   });
 
-  it('forwards url in connect options to transport', async () => {
-    const t = new FakeTransport();
-    const agent = new RealtimeAgent({ name: 'A', handoffs: [] });
-    const s = new RealtimeSession(agent, { transport: t });
-    await s.connect({ apiKey: 'test', url: 'ws://example' });
-    expect(t.connectCalls[0]?.url).toBe('ws://example');
-  });
-
   it('updateHistory accepts callback', () => {
     const item = createMessage('1', 'hi');
     session.updateHistory([item]);