From 657ce7b5ad682a37f0a336e92f75b9f5fb9152f1 Mon Sep 17 00:00:00 2001
From: rui-ren <ruiren1225@gmail.com>
Date: Thu, 21 May 2026 23:11:13 -0700
Subject: [PATCH 1/7] support multi-lingual

---
 samples/cpp/live-audio-transcription/main.cpp      | 9 ++++++++-
 samples/cs/live-audio-transcription/Program.cs     | 7 +++++++
 samples/js/live-audio-transcription/app.js         | 7 +++++++
 samples/python/live-audio-transcription/src/app.py | 9 ++++++++-
 samples/rust/live-audio-transcription/src/main.rs  | 7 +++++++
 5 files changed, 37 insertions(+), 2 deletions(-)

diff --git a/samples/cpp/live-audio-transcription/main.cpp b/samples/cpp/live-audio-transcription/main.cpp
index 5c94d6180..1055ce78e 100644
--- a/samples/cpp/live-audio-transcription/main.cpp
+++ b/samples/cpp/live-audio-transcription/main.cpp
@@ -126,9 +126,12 @@ int main(int argc, char* argv[]) {
         manager.DownloadAndRegisterEps(nullptr, isCancellationRequested);
 
         auto& catalog = manager.GetCatalog();
+        // English-only:
         auto* model = catalog.GetModel("nemotron-speech-streaming-en-0.6b");
+        // Multi-lingual (supports 30+ languages including auto-detect):
+        // auto* model = catalog.GetModel("Nemotron-3.5-ASR-Streaming-Multilingual-0.6b-onnx-int4");
         if (!model) {
-            throw std::runtime_error("Model \"nemotron-speech-streaming-en-0.6b\" not found in catalog");
+            throw std::runtime_error("Model not found in catalog");
         }
 
         std::cout << "Downloading model (if needed)..." << std::endl;
@@ -152,6 +155,10 @@ int main(int argc, char* argv[]) {
         session->Settings().channels = 1;
         session->Settings().bits_per_sample = 16;
         session->Settings().language = "en";
+        // Multi-lingual examples:
+        // session->Settings().language = "de";     // German
+        // session->Settings().language = "zh-CN";  // Chinese (Simplified)
+        // session->Settings().language = "auto";   // Auto-detect language
         session->Start();
         std::cout << "Session started" << std::endl;
 
diff --git a/samples/cs/live-audio-transcription/Program.cs b/samples/cs/live-audio-transcription/Program.cs
index 5c8b8988f..12342b514 100644
--- a/samples/cs/live-audio-transcription/Program.cs
+++ b/samples/cs/live-audio-transcription/Program.cs
@@ -24,7 +24,10 @@
 
 var catalog = await mgr.GetCatalogAsync();
 
+// English-only:
 var model = await catalog.GetModelAsync("nemotron-speech-streaming-en-0.6b") ?? throw new Exception("Model \"nemotron-speech-streaming-en-0.6b\" not found in catalog");
+// Multi-lingual (supports 30+ languages including auto-detect):
+// var model = await catalog.GetModelAsync("Nemotron-3.5-ASR-Streaming-Multilingual-0.6b-onnx-int4") ?? throw new Exception("Model not found");
 
 await model.DownloadAsync(progress =>
 {
@@ -44,6 +47,10 @@ await model.DownloadAsync(progress =>
 session.Settings.SampleRate = 16000;  // Default is 16000; shown here to match the NAudio WaveFormat below
 session.Settings.Channels = 1;
 session.Settings.Language = "en";
+// Multi-lingual examples:
+// session.Settings.Language = "de";     // German
+// session.Settings.Language = "zh-CN";  // Chinese (Simplified)
+// session.Settings.Language = "auto";   // Auto-detect language
 
 await session.StartAsync();
 Console.WriteLine("       Session started");
diff --git a/samples/js/live-audio-transcription/app.js b/samples/js/live-audio-transcription/app.js
index 42e9c8757..0fa0d16b6 100644
--- a/samples/js/live-audio-transcription/app.js
+++ b/samples/js/live-audio-transcription/app.js
@@ -21,7 +21,10 @@ const manager = FoundryLocalManager.create({
 console.log('✓ SDK initialized');
 
 // Get and load the nemotron model
+// English-only:
 const modelAlias = 'nemotron-speech-streaming-en-0.6b';
+// Multi-lingual (supports 30+ languages including auto-detect):
+// const modelAlias = 'Nemotron-3.5-ASR-Streaming-Multilingual-0.6b-onnx-int4';
 let model = await manager.catalog.getModel(modelAlias);
 if (!model) {
     console.error(`ERROR: Model "${modelAlias}" not found in catalog.`);
@@ -47,6 +50,10 @@ session.settings.sampleRate = 16000;  // Default is 16000; shown here for clarit
 session.settings.channels = 1;
 session.settings.bitsPerSample = 16;
 session.settings.language = 'en';
+// Multi-lingual examples:
+// session.settings.language = 'de';     // German
+// session.settings.language = 'zh-CN';  // Chinese (Simplified)
+// session.settings.language = 'auto';   // Auto-detect language
 
 console.log('Starting streaming session...');
 await session.start();
diff --git a/samples/python/live-audio-transcription/src/app.py b/samples/python/live-audio-transcription/src/app.py
index ba61b679d..36ebe0037 100644
--- a/samples/python/live-audio-transcription/src/app.py
+++ b/samples/python/live-audio-transcription/src/app.py
@@ -29,9 +29,12 @@
 
 manager.download_and_register_eps()
 
+# English-only:
 model = manager.catalog.get_model("nemotron-speech-streaming-en-0.6b")
+# Multi-lingual (supports 30+ languages including auto-detect):
+# model = manager.catalog.get_model("Nemotron-3.5-ASR-Streaming-Multilingual-0.6b-onnx-int4")
 if model is None:
-    raise RuntimeError('Model "nemotron-speech-streaming-en-0.6b" not found in catalog')
+    raise RuntimeError('Model not found in catalog')
 
 model.download(
     lambda progress: print(f"\rDownloading model: {progress:.2f}%", end="", flush=True)
@@ -46,6 +49,10 @@
 session.settings.sample_rate = 16000
 session.settings.channels = 1
 session.settings.language = "en"
+# Multi-lingual examples:
+# session.settings.language = "de"     # German
+# session.settings.language = "zh-CN"  # Chinese (Simplified)
+# session.settings.language = "auto"   # Auto-detect language
 
 session.start()
 print("✓ Session started")
diff --git a/samples/rust/live-audio-transcription/src/main.rs b/samples/rust/live-audio-transcription/src/main.rs
index 12074ae46..9fde1d9c2 100644
--- a/samples/rust/live-audio-transcription/src/main.rs
+++ b/samples/rust/live-audio-transcription/src/main.rs
@@ -15,7 +15,10 @@ use cpal::traits::{DeviceTrait, HostTrait, StreamTrait};
 use foundry_local_sdk::{FoundryLocalConfig, FoundryLocalManager};
 use tokio_stream::StreamExt;
 
+// English-only:
 const ALIAS: &str = "nemotron-speech-streaming-en-0.6b";
+// Multi-lingual (supports 30+ languages including auto-detect):
+// const ALIAS: &str = "Nemotron-3.5-ASR-Streaming-Multilingual-0.6b-onnx-int4";
 
 // Global flag for Ctrl+C graceful shutdown (mirrors JS process.on('SIGINT'))
 static RUNNING: AtomicBool = AtomicBool::new(true);
@@ -58,6 +61,10 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
 
     let audio_client = model.create_audio_client();
     let session = Arc::new(audio_client.create_live_transcription_session());
+    // session.settings.language = Some("en".into());    // English (default)
+    // session.settings.language = Some("de".into());    // German
+    // session.settings.language = Some("zh-CN".into()); // Chinese (Simplified)
+    // session.settings.language = Some("auto".into());  // Auto-detect
     session.start(None).await?;
     println!("✓ Session started\n");
 

From bd3bb700b65755f58bd09879cd8a2e73f699273a Mon Sep 17 00:00:00 2001
From: rui-ren <ruiren1225@gmail.com>
Date: Thu, 21 May 2026 23:34:20 -0700
Subject: [PATCH 2/7] lint

---
 samples/cpp/live-audio-transcription/main.cpp      | 7 ++++---
 samples/cs/live-audio-transcription/Program.cs     | 2 +-
 samples/python/live-audio-transcription/src/app.py | 7 ++++---
 samples/rust/live-audio-transcription/src/main.rs  | 3 ++-
 4 files changed, 11 insertions(+), 8 deletions(-)

diff --git a/samples/cpp/live-audio-transcription/main.cpp b/samples/cpp/live-audio-transcription/main.cpp
index 1055ce78e..5b77ab731 100644
--- a/samples/cpp/live-audio-transcription/main.cpp
+++ b/samples/cpp/live-audio-transcription/main.cpp
@@ -127,11 +127,12 @@ int main(int argc, char* argv[]) {
 
         auto& catalog = manager.GetCatalog();
         // English-only:
-        auto* model = catalog.GetModel("nemotron-speech-streaming-en-0.6b");
+        const char* modelAlias = "nemotron-speech-streaming-en-0.6b";
         // Multi-lingual (supports 30+ languages including auto-detect):
-        // auto* model = catalog.GetModel("Nemotron-3.5-ASR-Streaming-Multilingual-0.6b-onnx-int4");
+        // const char* modelAlias = "Nemotron-3.5-ASR-Streaming-Multilingual-0.6b-onnx-int4";
+        auto* model = catalog.GetModel(modelAlias);
         if (!model) {
-            throw std::runtime_error("Model not found in catalog");
+            throw std::runtime_error(std::string("Model \"") + modelAlias + "\" not found in catalog");
         }
 
         std::cout << "Downloading model (if needed)..." << std::endl;
diff --git a/samples/cs/live-audio-transcription/Program.cs b/samples/cs/live-audio-transcription/Program.cs
index 12342b514..cad82de37 100644
--- a/samples/cs/live-audio-transcription/Program.cs
+++ b/samples/cs/live-audio-transcription/Program.cs
@@ -27,7 +27,7 @@
 // English-only:
 var model = await catalog.GetModelAsync("nemotron-speech-streaming-en-0.6b") ?? throw new Exception("Model \"nemotron-speech-streaming-en-0.6b\" not found in catalog");
 // Multi-lingual (supports 30+ languages including auto-detect):
-// var model = await catalog.GetModelAsync("Nemotron-3.5-ASR-Streaming-Multilingual-0.6b-onnx-int4") ?? throw new Exception("Model not found");
+// var model = await catalog.GetModelAsync("Nemotron-3.5-ASR-Streaming-Multilingual-0.6b-onnx-int4") ?? throw new Exception("Model \"Nemotron-3.5-ASR-Streaming-Multilingual-0.6b-onnx-int4\" not found in catalog");
 
 await model.DownloadAsync(progress =>
 {
diff --git a/samples/python/live-audio-transcription/src/app.py b/samples/python/live-audio-transcription/src/app.py
index 36ebe0037..85d17651c 100644
--- a/samples/python/live-audio-transcription/src/app.py
+++ b/samples/python/live-audio-transcription/src/app.py
@@ -30,11 +30,12 @@
 manager.download_and_register_eps()
 
 # English-only:
-model = manager.catalog.get_model("nemotron-speech-streaming-en-0.6b")
+model_alias = "nemotron-speech-streaming-en-0.6b"
 # Multi-lingual (supports 30+ languages including auto-detect):
-# model = manager.catalog.get_model("Nemotron-3.5-ASR-Streaming-Multilingual-0.6b-onnx-int4")
+# model_alias = "Nemotron-3.5-ASR-Streaming-Multilingual-0.6b-onnx-int4"
+model = manager.catalog.get_model(model_alias)
 if model is None:
-    raise RuntimeError('Model not found in catalog')
+    raise RuntimeError(f'Model "{model_alias}" not found in catalog')
 
 model.download(
     lambda progress: print(f"\rDownloading model: {progress:.2f}%", end="", flush=True)
diff --git a/samples/rust/live-audio-transcription/src/main.rs b/samples/rust/live-audio-transcription/src/main.rs
index 9fde1d9c2..9388543d2 100644
--- a/samples/rust/live-audio-transcription/src/main.rs
+++ b/samples/rust/live-audio-transcription/src/main.rs
@@ -60,11 +60,12 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     println!("✓ Model loaded\n");
 
     let audio_client = model.create_audio_client();
-    let session = Arc::new(audio_client.create_live_transcription_session());
+    let mut session = audio_client.create_live_transcription_session();
     // session.settings.language = Some("en".into());    // English (default)
     // session.settings.language = Some("de".into());    // German
     // session.settings.language = Some("zh-CN".into()); // Chinese (Simplified)
     // session.settings.language = Some("auto".into());  // Auto-detect
+    let session = Arc::new(session);
     session.start(None).await?;
     println!("✓ Session started\n");
 

From d36efac3214678140f860e96ba0148ebf43473b4 Mon Sep 17 00:00:00 2001
From: rui-ren <ruiren1225@gmail.com>
Date: Tue, 26 May 2026 18:07:57 -0700
Subject: [PATCH 3/7] regex output

---
 samples/cpp/live-audio-transcription/main.cpp      |  2 +-
 samples/cs/live-audio-transcription/Program.cs     |  2 +-
 samples/js/live-audio-transcription/app.js         |  2 +-
 samples/python/live-audio-transcription/src/app.py |  2 +-
 samples/rust/live-audio-transcription/src/main.rs  |  2 +-
 sdk/cs/src/OpenAI/LiveAudioTypes.cs                | 11 +++++++++--
 6 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/samples/cpp/live-audio-transcription/main.cpp b/samples/cpp/live-audio-transcription/main.cpp
index 5b77ab731..b3f654563 100644
--- a/samples/cpp/live-audio-transcription/main.cpp
+++ b/samples/cpp/live-audio-transcription/main.cpp
@@ -129,7 +129,7 @@ int main(int argc, char* argv[]) {
         // English-only:
         const char* modelAlias = "nemotron-speech-streaming-en-0.6b";
         // Multi-lingual (supports 30+ languages including auto-detect):
-        // const char* modelAlias = "Nemotron-3.5-ASR-Streaming-Multilingual-0.6b-onnx-int4";
+        // const char* modelAlias = "nvidia-nemotron-3.5-asr-streaming-multilingual-0.6b";
         auto* model = catalog.GetModel(modelAlias);
         if (!model) {
             throw std::runtime_error(std::string("Model \"") + modelAlias + "\" not found in catalog");
diff --git a/samples/cs/live-audio-transcription/Program.cs b/samples/cs/live-audio-transcription/Program.cs
index cad82de37..a57a42f9d 100644
--- a/samples/cs/live-audio-transcription/Program.cs
+++ b/samples/cs/live-audio-transcription/Program.cs
@@ -27,7 +27,7 @@
 // English-only:
 var model = await catalog.GetModelAsync("nemotron-speech-streaming-en-0.6b") ?? throw new Exception("Model \"nemotron-speech-streaming-en-0.6b\" not found in catalog");
 // Multi-lingual (supports 30+ languages including auto-detect):
-// var model = await catalog.GetModelAsync("Nemotron-3.5-ASR-Streaming-Multilingual-0.6b-onnx-int4") ?? throw new Exception("Model \"Nemotron-3.5-ASR-Streaming-Multilingual-0.6b-onnx-int4\" not found in catalog");
+// var model = await catalog.GetModelAsync("nvidia-nemotron-3.5-asr-streaming-multilingual-0.6b") ?? throw new Exception("Model \"nvidia-nemotron-3.5-asr-streaming-multilingual-0.6b\" not found in catalog");
 
 await model.DownloadAsync(progress =>
 {
diff --git a/samples/js/live-audio-transcription/app.js b/samples/js/live-audio-transcription/app.js
index 0fa0d16b6..1763e3b5d 100644
--- a/samples/js/live-audio-transcription/app.js
+++ b/samples/js/live-audio-transcription/app.js
@@ -24,7 +24,7 @@ console.log('✓ SDK initialized');
 // English-only:
 const modelAlias = 'nemotron-speech-streaming-en-0.6b';
 // Multi-lingual (supports 30+ languages including auto-detect):
-// const modelAlias = 'Nemotron-3.5-ASR-Streaming-Multilingual-0.6b-onnx-int4';
+// const modelAlias = 'nvidia-nemotron-3.5-asr-streaming-multilingual-0.6b';
 let model = await manager.catalog.getModel(modelAlias);
 if (!model) {
     console.error(`ERROR: Model "${modelAlias}" not found in catalog.`);
diff --git a/samples/python/live-audio-transcription/src/app.py b/samples/python/live-audio-transcription/src/app.py
index 85d17651c..122b59ee3 100644
--- a/samples/python/live-audio-transcription/src/app.py
+++ b/samples/python/live-audio-transcription/src/app.py
@@ -32,7 +32,7 @@
 # English-only:
 model_alias = "nemotron-speech-streaming-en-0.6b"
 # Multi-lingual (supports 30+ languages including auto-detect):
-# model_alias = "Nemotron-3.5-ASR-Streaming-Multilingual-0.6b-onnx-int4"
+# model_alias = "nvidia-nemotron-3.5-asr-streaming-multilingual-0.6b"
 model = manager.catalog.get_model(model_alias)
 if model is None:
     raise RuntimeError(f'Model "{model_alias}" not found in catalog')
diff --git a/samples/rust/live-audio-transcription/src/main.rs b/samples/rust/live-audio-transcription/src/main.rs
index 9388543d2..efb9184eb 100644
--- a/samples/rust/live-audio-transcription/src/main.rs
+++ b/samples/rust/live-audio-transcription/src/main.rs
@@ -18,7 +18,7 @@ use tokio_stream::StreamExt;
 // English-only:
 const ALIAS: &str = "nemotron-speech-streaming-en-0.6b";
 // Multi-lingual (supports 30+ languages including auto-detect):
-// const ALIAS: &str = "Nemotron-3.5-ASR-Streaming-Multilingual-0.6b-onnx-int4";
+// const ALIAS: &str = "nvidia-nemotron-3.5-asr-streaming-multilingual-0.6b";
 
 // Global flag for Ctrl+C graceful shutdown (mirrors JS process.on('SIGINT'))
 static RUNNING: AtomicBool = AtomicBool::new(true);
diff --git a/sdk/cs/src/OpenAI/LiveAudioTypes.cs b/sdk/cs/src/OpenAI/LiveAudioTypes.cs
index a0e985425..04cd506e3 100644
--- a/sdk/cs/src/OpenAI/LiveAudioTypes.cs
+++ b/sdk/cs/src/OpenAI/LiveAudioTypes.cs
@@ -2,6 +2,7 @@ namespace Microsoft.AI.Foundry.Local.OpenAI;
 
 using System.Text.Json;
 using System.Text.Json.Serialization;
+using System.Text.RegularExpressions;
 using Betalgo.Ranul.OpenAI.ObjectModels.RealtimeModels;
 using Microsoft.AI.Foundry.Local;
 using Microsoft.AI.Foundry.Local.Detail;
@@ -15,6 +16,9 @@ namespace Microsoft.AI.Foundry.Local.OpenAI;
 /// </summary>
 public class LiveAudioTranscriptionResponse : ConversationItem
 {
+    // Multilingual Nemotron models emit language tags like <zh-CN>, <en-US> at segment boundaries.
+    // Strip them so consumers get clean text.
+    private static readonly Regex LangTagRegex = new(@"\s*<[a-z]{2}(-[A-Z]{2})?>\s*", RegexOptions.Compiled);
     /// <summary>
     /// Whether this is a final or partial (interim) result.
     /// - Nemotron models always return <c>true</c> (every result is final).
@@ -38,6 +42,9 @@ internal static LiveAudioTranscriptionResponse FromJson(string json)
             JsonSerializationContext.Default.LiveAudioTranscriptionRaw)
             ?? throw new FoundryLocalException("Failed to deserialize live audio transcription result");
 
+        // Strip language tags emitted by multilingual models (e.g. <zh-CN>, <en-US>)
+        var text = LangTagRegex.Replace(raw.Text, " ").Trim();
+
         return new LiveAudioTranscriptionResponse
         {
             IsFinal = raw.IsFinal,
@@ -47,8 +54,8 @@ internal static LiveAudioTranscriptionResponse FromJson(string json)
             [
                 new ContentPart
                 {
-                    Text = raw.Text,
-                    Transcript = raw.Text
+                    Text = text,
+                    Transcript = text
                 }
             ]
         };

From de2b8f6fe79f80ff2856b8491af822b7df6889bf Mon Sep 17 00:00:00 2001
From: rui-ren <ruiren1225@gmail.com>
Date: Tue, 26 May 2026 21:26:43 -0700
Subject: [PATCH 4/7] version

---
 sdk/deps_versions_winml.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sdk/deps_versions_winml.json b/sdk/deps_versions_winml.json
index e67af58a6..653810ea6 100644
--- a/sdk/deps_versions_winml.json
+++ b/sdk/deps_versions_winml.json
@@ -7,9 +7,9 @@
     "version": "2.1.1"
   },
   "onnxruntime": {
-    "version": "1.25.1"
+    "version": "1.26.0"
   },
   "onnxruntime-genai": {
-    "version": "0.13.2"
+    "version": "0.14.0"
   }
 }

From f873f624baff8b53ea261a5bc8c05cbfec48094f Mon Sep 17 00:00:00 2001
From: rui-ren <ruiren1225@gmail.com>
Date: Tue, 26 May 2026 21:39:49 -0700
Subject: [PATCH 5/7] rust lint

---
 samples/rust/live-audio-transcription/src/main.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/samples/rust/live-audio-transcription/src/main.rs b/samples/rust/live-audio-transcription/src/main.rs
index 8435b16af..a2b2b58da 100644
--- a/samples/rust/live-audio-transcription/src/main.rs
+++ b/samples/rust/live-audio-transcription/src/main.rs
@@ -60,7 +60,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     println!("✓ Model loaded\n");
 
     let audio_client = model.create_audio_client();
-    let mut session = audio_client.create_live_transcription_session();
+    let session = audio_client.create_live_transcription_session();
     // session.settings.language = Some("en".into());    // English (default)
     // session.settings.language = Some("de".into());    // German
     // session.settings.language = Some("zh-CN".into()); // Chinese (Simplified)

From 494b382a499bc455fcce2482345600632ddfb0a3 Mon Sep 17 00:00:00 2001
From: rui-ren <ruiren1225@gmail.com>
Date: Tue, 26 May 2026 21:55:25 -0700
Subject: [PATCH 6/7] update README

---
 sdk/cpp/README.md  | 29 +++++++++++++++++++++++++++++
 sdk/cs/README.md   | 35 +++++++++++++++++++++++++++++++++++
 sdk/js/README.md   | 33 +++++++++++++++++++++++++++++++++
 sdk/rust/README.md | 33 +++++++++++++++++++++++++++++++++
 4 files changed, 130 insertions(+)

diff --git a/sdk/cpp/README.md b/sdk/cpp/README.md
index 5959ec95b..861b893d0 100644
--- a/sdk/cpp/README.md
+++ b/sdk/cpp/README.md
@@ -278,6 +278,35 @@ audio.TranscribeAudioStreaming(R"(C:\path\to\audio.wav)", [](const AudioCreateTr
 });
 ```
 
+#### Multilingual Language Codes
+
+When using a multilingual ASR model (e.g. `nvidia-nemotron-3.5-asr-streaming-multilingual-0.6b`), set the language to a BCP-47 language code to hint the expected language.
+
+| Code | Language | Code | Language |
+|------|----------|------|----------|
+| `en-US` | English (US) | `en-GB` | English (UK) |
+| `zh-CN` | Chinese (Simplified) | `ja-JP` | Japanese |
+| `ko-KR` | Korean | `de-DE` | German |
+| `fr-FR` | French | `fr-CA` | French (Canada) |
+| `es-ES` | Spanish (Spain) | `es-US` | Spanish (US) |
+| `it-IT` | Italian | `pt-BR` | Portuguese (Brazil) |
+| `pt-PT` | Portuguese (Portugal) | `ru-RU` | Russian |
+| `ar-AR` | Arabic | `hi-IN` | Hindi |
+| `nl-NL` | Dutch | `pl-PL` | Polish |
+| `sv-SE` | Swedish | `da-DK` | Danish |
+| `fi-FI` | Finnish | `cs-CZ` | Czech |
+| `ro-RO` | Romanian | `hu-HU` | Hungarian |
+| `sk-SK` | Slovak | `bg-BG` | Bulgarian |
+| `el-GR` | Greek | `et-EE` | Estonian |
+| `hr-HR` | Croatian | `lt-LT` | Lithuanian |
+| `lv-LV` | Latvian | `sl-SL` | Slovenian |
+| `uk-UA` | Ukrainian | `he-IL` | Hebrew |
+| `nb-NO` | Norwegian (Bokmål) | `nn-NO` | Norwegian (Nynorsk) |
+| `th-TH` | Thai | `tr-TR` | Turkish |
+| `vi-VN` | Vietnamese | `auto` | Auto-detect |
+
+Use `"auto"` to let the model detect the spoken language automatically.
+
 ### Tool Calling
 
 See `sample/main.cpp` (Example 5) for a full tool-calling walkthrough.
diff --git a/sdk/cs/README.md b/sdk/cs/README.md
index 9493eea0b..1ee872c5c 100644
--- a/sdk/cs/README.md
+++ b/sdk/cs/README.md
@@ -300,6 +300,41 @@ audioClient.Settings.Language = "en";
 audioClient.Settings.Temperature = 0.0f;
 ```
 
+#### Multilingual Language Codes
+
+When using a multilingual ASR model (e.g. `nvidia-nemotron-3.5-asr-streaming-multilingual-0.6b`), set `Language` to a BCP-47 language code to hint the expected language. This applies to both `OpenAIAudioClient.Settings.Language` and `LiveAudioTranscriptionSession.Settings.Language`.
+
+| Code | Language | Code | Language |
+|------|----------|------|----------|
+| `en-US` | English (US) | `en-GB` | English (UK) |
+| `zh-CN` | Chinese (Simplified) | `ja-JP` | Japanese |
+| `ko-KR` | Korean | `de-DE` | German |
+| `fr-FR` | French | `fr-CA` | French (Canada) |
+| `es-ES` | Spanish (Spain) | `es-US` | Spanish (US) |
+| `it-IT` | Italian | `pt-BR` | Portuguese (Brazil) |
+| `pt-PT` | Portuguese (Portugal) | `ru-RU` | Russian |
+| `ar-AR` | Arabic | `hi-IN` | Hindi |
+| `nl-NL` | Dutch | `pl-PL` | Polish |
+| `sv-SE` | Swedish | `da-DK` | Danish |
+| `fi-FI` | Finnish | `cs-CZ` | Czech |
+| `ro-RO` | Romanian | `hu-HU` | Hungarian |
+| `sk-SK` | Slovak | `bg-BG` | Bulgarian |
+| `el-GR` | Greek | `et-EE` | Estonian |
+| `hr-HR` | Croatian | `lt-LT` | Lithuanian |
+| `lv-LV` | Latvian | `sl-SL` | Slovenian |
+| `uk-UA` | Ukrainian | `he-IL` | Hebrew |
+| `nb-NO` | Norwegian (Bokmål) | `nn-NO` | Norwegian (Nynorsk) |
+| `th-TH` | Thai | `tr-TR` | Turkish |
+| `vi-VN` | Vietnamese | `auto` | Auto-detect |
+
+Use `"auto"` to let the model detect the spoken language automatically.
+
+```csharp
+// Multilingual example
+audioClient.Settings.Language = "zh-CN"; // Chinese
+session.Settings.Language = "auto";      // Auto-detect
+```
+
 ### Live Audio Transcription (Real-Time Streaming)
 
 For real-time microphone-to-text transcription, use `CreateLiveTranscriptionSession()`. Audio is pushed as raw PCM chunks and transcription results stream back as an `IAsyncEnumerable`.
diff --git a/sdk/js/README.md b/sdk/js/README.md
index 2eebae018..5aa84e3c4 100644
--- a/sdk/js/README.md
+++ b/sdk/js/README.md
@@ -265,6 +265,39 @@ for await (const chunk of audioClient.transcribeStreaming('/path/to/audio.wav'))
 }
 ```
 
+#### Multilingual Language Codes
+
+When using a multilingual ASR model (e.g. `nvidia-nemotron-3.5-asr-streaming-multilingual-0.6b`), set `language` to a BCP-47 language code to hint the expected language.
+
+| Code | Language | Code | Language |
+|------|----------|------|----------|
+| `en-US` | English (US) | `en-GB` | English (UK) |
+| `zh-CN` | Chinese (Simplified) | `ja-JP` | Japanese |
+| `ko-KR` | Korean | `de-DE` | German |
+| `fr-FR` | French | `fr-CA` | French (Canada) |
+| `es-ES` | Spanish (Spain) | `es-US` | Spanish (US) |
+| `it-IT` | Italian | `pt-BR` | Portuguese (Brazil) |
+| `pt-PT` | Portuguese (Portugal) | `ru-RU` | Russian |
+| `ar-AR` | Arabic | `hi-IN` | Hindi |
+| `nl-NL` | Dutch | `pl-PL` | Polish |
+| `sv-SE` | Swedish | `da-DK` | Danish |
+| `fi-FI` | Finnish | `cs-CZ` | Czech |
+| `ro-RO` | Romanian | `hu-HU` | Hungarian |
+| `sk-SK` | Slovak | `bg-BG` | Bulgarian |
+| `el-GR` | Greek | `et-EE` | Estonian |
+| `hr-HR` | Croatian | `lt-LT` | Lithuanian |
+| `lv-LV` | Latvian | `sl-SL` | Slovenian |
+| `uk-UA` | Ukrainian | `he-IL` | Hebrew |
+| `nb-NO` | Norwegian (Bokmål) | `nn-NO` | Norwegian (Nynorsk) |
+| `th-TH` | Thai | `tr-TR` | Turkish |
+| `vi-VN` | Vietnamese | `auto` | Auto-detect |
+
+```typescript
+// Multilingual example
+audioClient.settings.language = 'zh-CN'; // Chinese
+audioClient.settings.language = 'auto';  // Auto-detect
+```
+
 ### Embedded Web Service
 
 Start a local HTTP server that exposes an OpenAI-compatible API:
diff --git a/sdk/rust/README.md b/sdk/rust/README.md
index dbd9906a2..ded4d5f4d 100644
--- a/sdk/rust/README.md
+++ b/sdk/rust/README.md
@@ -441,6 +441,39 @@ while let Some(chunk) = stream.next().await {
 }
 ```
 
+#### Multilingual Language Codes
+
+When using a multilingual ASR model (e.g. `nvidia-nemotron-3.5-asr-streaming-multilingual-0.6b`), set `language` to a BCP-47 language code to hint the expected language.
+
+| Code | Language | Code | Language |
+|------|----------|------|----------|
+| `en-US` | English (US) | `en-GB` | English (UK) |
+| `zh-CN` | Chinese (Simplified) | `ja-JP` | Japanese |
+| `ko-KR` | Korean | `de-DE` | German |
+| `fr-FR` | French | `fr-CA` | French (Canada) |
+| `es-ES` | Spanish (Spain) | `es-US` | Spanish (US) |
+| `it-IT` | Italian | `pt-BR` | Portuguese (Brazil) |
+| `pt-PT` | Portuguese (Portugal) | `ru-RU` | Russian |
+| `ar-AR` | Arabic | `hi-IN` | Hindi |
+| `nl-NL` | Dutch | `pl-PL` | Polish |
+| `sv-SE` | Swedish | `da-DK` | Danish |
+| `fi-FI` | Finnish | `cs-CZ` | Czech |
+| `ro-RO` | Romanian | `hu-HU` | Hungarian |
+| `sk-SK` | Slovak | `bg-BG` | Bulgarian |
+| `el-GR` | Greek | `et-EE` | Estonian |
+| `hr-HR` | Croatian | `lt-LT` | Lithuanian |
+| `lv-LV` | Latvian | `sl-SL` | Slovenian |
+| `uk-UA` | Ukrainian | `he-IL` | Hebrew |
+| `nb-NO` | Norwegian (Bokmål) | `nn-NO` | Norwegian (Nynorsk) |
+| `th-TH` | Thai | `tr-TR` | Turkish |
+| `vi-VN` | Vietnamese | `auto` | Auto-detect |
+
+```rust
+// Multilingual example
+let audio_client = model.create_audio_client()
+    .language("zh-CN");  // Chinese
+```
+
 ### Embedded Web Service
 
 Start a local HTTP server that exposes an OpenAI-compatible REST API:

From c70207a83b19d038d3e272c0798bb6f786462ce9 Mon Sep 17 00:00:00 2001
From: rui-ren <ruiren1225@gmail.com>
Date: Wed, 27 May 2026 16:38:18 -0700
Subject: [PATCH 7/7] add C++ language usage snippet per review

---
 sdk/cpp/README.md | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/sdk/cpp/README.md b/sdk/cpp/README.md
index 921541748..eaf90cd4f 100644
--- a/sdk/cpp/README.md
+++ b/sdk/cpp/README.md
@@ -307,6 +307,13 @@ When using a multilingual ASR model (e.g. `nvidia-nemotron-3.5-asr-streaming-mul
 
 Use `"auto"` to let the model detect the spoken language automatically.
 
+Set the language on a live audio transcription session:
+
+```cpp
+session->Settings().language = "zh-CN";  // Chinese (Simplified)
+// session->Settings().language = "auto"; // Auto-detect language
+```
+
 ### Tool Calling
 
 See `sample/main.cpp` (Example 5) for a full tool-calling walkthrough.