Add Vapi Voices V2

fern/providers/voice/vapi-voices.mdx

@@ -19,18 +19,36 @@ Vapi Voices is our carefully curated selection of high-quality voices designed t
 - **Ready to Use**: Pre-optimized for your applications
 - **Consistent**: Reliable quality in all interactions
 
+## Vapi Voices V2
+
+We've upgraded the text-to-speech model behind Vapi Voices. **Version 2** voices sound more realistic, human, and consistent — at a lower cost than the original model.
+
+Version 2 is **opt-in per assistant**. Your existing assistants are unchanged: if you're already running a Vapi Voice in production, it keeps behaving exactly as it does today until you choose to upgrade.
+
+To use V2, set `version: 2` on your voice configuration through the API or in the Dashboard:
+
+```json
+{
+  "voice": {
+    "provider": "vapi",
+    "voiceId": "Elliot",
+    "version": 2
+  }
+}
+```
+
 ## Active Voices
 
-These voices are fully supported and recommended for new assistants.
+These voices are fully supported and recommended for new assistants. The voices below marked <span style={{color: '#3b82f6', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>V2</span> support the upgraded version 2 model.
 
-### Elliot
+### Elliot <span style={{color: '#3b82f6', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>V2</span>
 - **Gender**: Male
 - **Accent**: Canadian
 - **Age**: 20s
 - **Characteristics**: Realistic, friendly, professional, soothing
 - **Sample Audio**: <audio controls src="/static/audio/elliot-sample.wav">Your browser does not support the audio element.</audio>
 
-### Savannah
+### Savannah <span style={{color: '#3b82f6', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>V2</span>
 - **Gender**: Female
 - **Accent**: American (Southern)
 - **Age**: 20s
@@ -42,48 +60,77 @@ These voices are fully supported and recommended for new assistants.
 - **Accent**: Indian American
 - **Age**: 20s
 - **Characteristics**: Realistic, bright, energetic
+- **Note**: Version 2 is not available for this voice
 
-### Emma <span style={{color: '#22c55e', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>New</span>
+### Emma <span style={{color: '#22c55e', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>New</span> <span style={{color: '#3b82f6', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>V2</span>
 - **Gender**: Female
 - **Accent**: Asian American
 - **Age**: 20s
 - **Characteristics**: Realistic, warm, conversational
+- **Sample Audio**: <audio controls src="/static/audio/emma-sample.wav">Your browser does not support the audio element.</audio>
 
-### Clara <span style={{color: '#22c55e', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>New</span>
+### Clara <span style={{color: '#22c55e', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>New</span> <span style={{color: '#3b82f6', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>V2</span>
 - **Gender**: Female
 - **Accent**: American
 - **Age**: 30s
 - **Characteristics**: Realistic, warm, professional
+- **Sample Audio**: <audio controls src="/static/audio/clara-sample.wav">Your browser does not support the audio element.</audio>
 
-### Nico <span style={{color: '#22c55e', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>New</span>
+### Nico <span style={{color: '#22c55e', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>New</span> <span style={{color: '#3b82f6', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>V2</span>
 - **Gender**: Male
 - **Accent**: American
 - **Age**: 20s
 - **Characteristics**: Realistic, young, casual, natural
+- **Sample Audio**: <audio controls src="/static/audio/nico-sample.wav">Your browser does not support the audio element.</audio>
 
-### Kai <span style={{color: '#22c55e', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>New</span>
+### Kai <span style={{color: '#22c55e', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>New</span> <span style={{color: '#3b82f6', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>V2</span>
 - **Gender**: Male
 - **Accent**: American
 - **Age**: 30s
 - **Characteristics**: Realistic, friendly, relaxed, approachable
+- **Sample Audio**: <audio controls src="/static/audio/kai-sample.wav">Your browser does not support the audio element.</audio>
 
-### Sagar <span style={{color: '#22c55e', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>New</span>
+### Sagar <span style={{color: '#22c55e', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>New</span> <span style={{color: '#3b82f6', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>V2</span>
 - **Gender**: Male
 - **Accent**: Indian American
 - **Age**: 20s
 - **Characteristics**: Realistic, steady, professional
+- **Sample Audio**: <audio controls src="/static/audio/sagar-sample.wav">Your browser does not support the audio element.</audio>
 
-### Godfrey <span style={{color: '#22c55e', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>New</span>
+### Godfrey <span style={{color: '#22c55e', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>New</span> <span style={{color: '#3b82f6', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>V2</span>
 - **Gender**: Male
 - **Accent**: American
 - **Age**: 20s
 - **Characteristics**: Realistic, young, energetic
+- **Sample Audio**: <audio controls src="/static/audio/godfrey-sample.wav">Your browser does not support the audio element.</audio>
 
-### Neil <span style={{color: '#22c55e', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>New</span>
+### Neil <span style={{color: '#22c55e', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>New</span> <span style={{color: '#3b82f6', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>V2</span>
 - **Gender**: Male
 - **Accent**: Indian American
 - **Age**: 20s
 - **Characteristics**: Realistic, clear, professional
+- **Sample Audio**: <audio controls src="/static/audio/neil-sample.wav">Your browser does not support the audio element.</audio>
+
+### Layla <span style={{color: '#22c55e', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>New</span> <span style={{color: '#3b82f6', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>V2</span>
+- **Gender**: Female
+- **Accent**: American
+- **Age**: 20s
+- **Characteristics**: Realistic, warm, bright, cheerful
+- **Sample Audio**: <audio controls src="/static/audio/layla-sample.wav">Your browser does not support the audio element.</audio>
+
+### Sid <span style={{color: '#22c55e', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>New</span> <span style={{color: '#3b82f6', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>V2</span>
+- **Gender**: Male
+- **Accent**: American
+- **Age**: 30s
+- **Characteristics**: Realistic, laid-back, smooth, deep-toned
+- **Sample Audio**: <audio controls src="/static/audio/sid-sample.wav">Your browser does not support the audio element.</audio>
+
+### Naina <span style={{color: '#22c55e', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>New</span> <span style={{color: '#3b82f6', fontWeight: 'bold', fontSize: '0.75em', verticalAlign: 'super'}}>V2</span>
+- **Gender**: Female
+- **Accent**: Indian American
+- **Age**: 20s
+- **Characteristics**: Realistic, calm, collected, professional
+- **Sample Audio**: <audio controls src="/static/audio/naina-sample.wav">Your browser does not support the audio element.</audio>
 
 ## How to Use
 

fern/providers/voice/vapi-voices/legacy-migration.mdx

@@ -6,7 +6,7 @@ slug: providers/voice/vapi-voices/legacy-migration
 
 ## Voice availability update
 
-We've updated Vapi Voices. Some legacy voices have been retired while others continue to be available. We've also added new ultra-realistic human voice clones — Emma, Nico, Sagar, Kai, Neil, Clara, and Godfrey, with more coming soon — which you can preview in the [Vapi Dashboard](https://dashboard.vapi.ai/).
+We've updated Vapi Voices. Some legacy voices have been retired while others continue to be available. We've also added new ultra-realistic human voice clones — Emma, Nico, Sagar, Kai, Neil, Clara, Godfrey, Layla, Sid, and Naina, with more coming soon — which you can preview in the [Vapi Dashboard](https://dashboard.vapi.ai/).
 
 ### Voices retired on March 1, 2026
 
@@ -79,9 +79,16 @@ We've also released a new generation of Vapi Voices that you can use with your a
 - Kai
 - Clara
 - Godfrey
+- Layla
+- Sid
+- Naina
 
 These are separate from the replacement voices listed above — they won't be used as automatic fallbacks. But if you're updating your assistant as part of this migration, they're worth trying out. More voices are coming soon. You can preview them in the [**Vapi Dashboard**](https://dashboard.vapi.ai/).
 
+### Version 2 voices
+
+Most Vapi Voices now support an upgraded **version 2** model that sounds more realistic, human, and consistent — at a lower cost than the original model. Version 2 is opt-in per assistant by setting `version: 2` on your voice configuration, and existing assistants are unchanged until you upgrade. See [Vapi Voices V2](/providers/voice/vapi-voices#vapi-voices-v2) for the full list of supported voices and setup details.
+
 ## FAQs
 
 <AccordionGroup>