Sync from internal repo (2026/06/15)

README.md

@@ -16,9 +16,6 @@ The AssemblyAI JavaScript SDK provides an easy-to-use interface for interacting
 which supports async and streaming transcription.
 It is written primarily for Node.js in TypeScript with all types exported, but also [compatible with other runtimes](./docs/compat.md).
 
-> **⚠️ WARNING**
-> This SDK is intended for **testing and light usage only**. It is not recommended for use at scale or with production traffic. For best results, we recommend calling the AssemblyAI API directly via HTTP request. See our [official documentation](https://www.assemblyai.com/docs) for more information, including HTTP code examples.
-
 ## Claude Code
 
 This repository includes a [`CLAUDE.md`](CLAUDE.md) file that provides context to Claude Code about this SDK — key APIs, common patterns, and gotchas. When you open this repo in Claude Code, it automatically reads this file to give better assistance.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "assemblyai",
-  "version": "4.34.5",
+  "version": "4.34.6",
   "description": "The AssemblyAI JavaScript SDK provides an easy-to-use interface for interacting with the AssemblyAI API, which supports async and real-time transcription, as well as the latest LeMUR models.",
   "engines": {
     "node": ">=18"

src/types/streaming/index.ts

@@ -172,6 +172,7 @@ export type StreamingSpeechModel =
   | "u3-rt-pro"
   | "u3-rt-pro-beta-1"
   | "whisper-rt"
+  | "universal-3-5-pro"
   | "u3-pro";
 
 export type StreamingDomain = "medical-v1";

tests/unit/streaming.test.ts

@@ -338,6 +338,23 @@ describe("streaming", () => {
     await connect(rt, server);
   });
 
+  it("should include universal-3-5-pro speech model in connection URL", async () => {
+    await cleanup();
+    WS.clean();
+
+    const wsUrl = `${websocketBaseUrl}?token=123&sample_rate=16000&speech_model=universal-3-5-pro`;
+    server = new WS(wsUrl);
+    rt = new StreamingTranscriber({
+      websocketBaseUrl,
+      token: "123",
+      sampleRate: 16_000,
+      speechModel: "universal-3-5-pro" as const,
+    });
+    onOpen = jest.fn();
+    rt.on("open", onOpen);
+    await connect(rt, server);
+  });
+
   it("should parse speaker_label from turn event", async () => {
     const turnPromise = new Promise<{ speaker_label?: string }>((resolve) => {
       rt.on("turn", (event) => resolve(event));