signalwire · Devon-White · Jun 15, 2026 · Jun 15, 2026 · Jun 15, 2026 · Jun 15, 2026
diff --git a/fern/products/platform/pages/calling/voice/TTS/azure.mdx b/fern/products/platform/pages/calling/voice/TTS/azure.mdx
@@ -1,6 +1,7 @@
 ---
 id: 3d4a77e2-2277-4165-916c-21e9db487c31
 title: Azure
+subtitle: Text-to-speech
 description: Learn how to use Azure TTS voices on the SignalWire platform.
 slug: /voice/tts/azure
 ---

diff --git a/fern/products/platform/pages/calling/voice/TTS/cartesia.mdx b/fern/products/platform/pages/calling/voice/TTS/cartesia.mdx
@@ -1,6 +1,7 @@
 ---
 id: 2b73a251-1dda-48f8-a437-08e076279e7f
 title: Cartesia
+subtitle: Text-to-speech
 description: Learn how to use Cartesia TTS voices on the SignalWire platform.
 slug: /voice/tts/cartesia
 ---

diff --git a/fern/products/platform/pages/calling/voice/TTS/deepgram.mdx b/fern/products/platform/pages/calling/voice/TTS/deepgram.mdx
@@ -1,6 +1,7 @@
 ---
 id: c2a4f703-3d37-4239-9c5c-a7a3498dd58d
 title: Deepgram
+subtitle: Text-to-speech
 description: Learn how to use Deepgram TTS voices on the SignalWire platform.
 slug: /voice/tts/deepgram
 ---

diff --git a/fern/products/platform/pages/calling/voice/TTS/elevenlabs.mdx b/fern/products/platform/pages/calling/voice/TTS/elevenlabs.mdx
@@ -1,6 +1,7 @@
 ---
 id: 042baf57-35a8-47ce-93cb-8387cacff266
 title: ElevenLabs
+subtitle: Text-to-speech
 description: Learn how to use ElevenLabs TTS voices on the SignalWire platform.
 slug: /voice/tts/elevenlabs
 ---

diff --git a/fern/products/platform/pages/calling/voice/TTS/google.mdx b/fern/products/platform/pages/calling/voice/TTS/google.mdx
@@ -1,6 +1,7 @@
 ---
 id: 2724fea7-d6f8-44e3-b397-a3940ac4e663
 title: Google Cloud
+subtitle: Text-to-speech
 description: Learn how to use Google Cloud TTS voices on the SignalWire platform.
 slug: /voice/tts/gcloud
 ---

diff --git a/fern/products/platform/pages/calling/voice/TTS/index.mdx b/fern/products/platform/pages/calling/voice/TTS/index.mdx
@@ -18,6 +18,8 @@ description: Detailed list of all the TTS providers and voices SignalWire suppor
 [deepgram]: /docs/platform/voice/tts/deepgram
 [elevenlabs]: /docs/platform/voice/tts/elevenlabs
 [gcloud]: /docs/platform/voice/tts/gcloud
+[inworld]: /docs/platform/voice/tts/inworld
+[minimax]: /docs/platform/voice/tts/minimax
 [openai]: /docs/platform/voice/tts/openai
 [rime]: /docs/platform/voice/tts/rime
 
@@ -43,6 +45,10 @@ English, Spanish, French, German, and Hindi (Arcana model only).
 English, Spanish, German, French, Dutch, Italian, and Japanese.
 - [Amazon Polly][polly], [Azure][azure], [Cartesia][cartesia], and [Google Cloud][gcloud]
 offer a wide range of supported languages.
+- [Inworld][inworld] voices support English plus Arabic, Chinese (Mandarin), Dutch, French,
+German, Hebrew, Hindi, Italian, Japanese, Korean, Polish, Portuguese, Russian, and Spanish.
+- [MiniMax][minimax] voices span more than 20 languages, including English, Spanish, Portuguese,
+French, German, Italian, Chinese, Japanese, Korean, and many more, with automatic language detection.
 - All [ElevenLabs][elevenlabs] and [OpenAI][openai] voices are fully multilingual.
 
 **SSML support:** Google Cloud and Amazon Polly support
@@ -78,16 +84,18 @@ GCLOUD.EN-US-NEURAL2-A
 
 For detailed instructions for each provider, consult the voice ID references linked in the **Usage** column of the below table.
 
-| TTS provider    | Engine code  | Sample voice ID string                          | Usage                                          |
-| :-------------- | :----------- | :---------------------------------------------- | ---------------------------------------------- |
-| Amazon Polly    | `amazon`     | `amazon.Joanna-Neural`                          | [Reference](/docs/platform/voice/tts/amazon-polly#usage)     |
-| Azure           | `azure`      | `en-US-AvaNeural`                               | [Reference](/docs/platform/voice/tts/azure#usage)            |
-| Cartesia        | `cartesia`   | `cartesia.a167e0f3-df7e-4d52-a9c3-f949145efdab` | [Reference](/docs/platform/voice/tts/cartesia#usage)         |
-| Deepgram        | `deepgram`   | `deepgram.aura-asteria-en`                      | [Reference](/docs/platform/voice/tts/deepgram#usage)         |
-| ElevenLabs      | `elevenlabs` | `elevenlabs.thomas`                             | [Reference](/docs/platform/voice/tts/elevenlabs#usage)       |
-| Google Cloud    | `gcloud`     | `gcloud.en-US-Casual-K`                         | [Reference](/docs/platform/voice/tts/gcloud#usage)           |
-| OpenAI          | `openai`     | `openai.alloy`                                  | [Reference](/docs/platform/voice/tts/openai#usage)           |
-| Rime            | `rime`       | `rime.luna:arcana`                              | [Reference](/docs/platform/voice/tts/rime#voices)            |
+| TTS provider    | Sample voice ID string                          | Usage                                          |
+| :-------------- | :---------------------------------------------- | ---------------------------------------------- |
+| Amazon Polly    | `amazon.Joanna-Neural`                          | [Reference](/docs/platform/voice/tts/amazon-polly#usage)     |
+| Azure           | `azure.en-US-AvaNeural`                          | [Reference](/docs/platform/voice/tts/azure#usage)            |
+| Cartesia        | `cartesia.a167e0f3-df7e-4d52-a9c3-f949145efdab` | [Reference](/docs/platform/voice/tts/cartesia#usage)         |
+| Deepgram        | `deepgram.aura-asteria-en`                      | [Reference](/docs/platform/voice/tts/deepgram#usage)         |
+| ElevenLabs      | `elevenlabs.thomas`                             | [Reference](/docs/platform/voice/tts/elevenlabs#usage)       |
+| Google Cloud    | `gcloud.en-US-Casual-K`                         | [Reference](/docs/platform/voice/tts/gcloud#usage)           |
+| Inworld         | `inworld.Lauren:inworld-tts-1.5-mini`           | [Reference](/docs/platform/voice/tts/inworld#voices)         |
+| MiniMax         | `minimax.English_CalmWoman:speech-2.6-turbo`    | [Reference](/docs/platform/voice/tts/minimax#voices)         |
+| OpenAI          | `openai.alloy`                                  | [Reference](/docs/platform/voice/tts/openai#usage)           |
+| Rime            | `rime.luna:arcana`                              | [Reference](/docs/platform/voice/tts/rime#voices)            |
 
 <br/>
 

diff --git a/fern/products/platform/pages/calling/voice/TTS/inworld.mdx b/fern/products/platform/pages/calling/voice/TTS/inworld.mdx
@@ -0,0 +1,185 @@
+---
+title: Inworld
+subtitle: Text-to-speech
+slug: /voice/tts/inworld
+description: Learn how to use Inworld's expressive, multilingual TTS models with SignalWire AI Voice applications.
+max-toc-depth: 3
+---
+
+
+Inworld is a text-to-speech engine offering high-quality, expressive voices across many languages.
+
+## Models
+
+SignalWire supports two Inworld models.
+See [Inworld's model documentation](https://docs.inworld.ai/tts/tts-models) for more detail.
+
+| Model | Description |
+|-------|-------------|
+| `inworld-tts-1.5-mini` | Faster, lower-cost model, suited for high-volume, latency-sensitive applications |
+| `inworld-tts-1.5-max` | Higher-quality model, suited for expressive, character-driven, and premium reads |
+
+<Info>
+Defaults to `inworld-tts-1.5-mini` when used with [AI agents](/docs/swml/reference/ai); otherwise it
+defaults to `inworld-tts-1.5-max`. Set a model explicitly to override this.
+</Info>
+
+## Voices
+
+Inworld provides a large library of expressive voices across many languages.
+A voice's name is its voice ID — for example, `Lauren` becomes `inworld.Lauren` in the
+[voice string](#usage).
+
+<Warning>
+Only Inworld's built-in voices are supported. Cloned and custom voices do not work — you must use
+one of the default voice IDs that Inworld provides.
+</Warning>
+
+Preview the voices and find their IDs in Inworld's documentation:
+
+<CardGroup cols={2}>
+	<Card title="Inworld TTS Playground" icon="regular waveform-lines" href="https://docs.inworld.ai/tts/tts-playground">
+		Preview Inworld voices and models in the browser.
+	</Card>
+	<Card title="Inworld TTS docs" icon="regular book-open" href="https://docs.inworld.ai/tts/tts">
+		Reference for voices, models, and languages.
+	</Card>
+</CardGroup>
+
+## Languages
+
+Inworld supports the following languages:
+
+| Language | Code |
+| :------- | :--- |
+| English | `en` |
+| Arabic | `ar` |
+| Chinese (Mandarin) | `zh` |
+| Dutch | `nl` |
+| French | `fr` |
+| German | `de` |
+| Hebrew | `he` |
+| Hindi | `hi` |
+| Italian | `it` |
+| Japanese | `ja` |
+| Korean | `ko` |
+| Polish | `pl` |
+| Portuguese | `pt` |
+| Russian | `ru` |
+| Spanish | `es` |
+
+Refer to the [Inworld TTS docs](https://docs.inworld.ai/tts/tts)
+for the most up-to-date reference to supported languages and voices.
+
+## Usage
+
+A voice identifier string has three parts: the `inworld` engine code, a voice ID, and an optional model.
+
+**Format**: `inworld.<voiceId>:<model>`
+
+- `voiceId` (required): an Inworld voice name (for example, `Lauren`); see [Voices](#voices).
+- `model` (optional): one of the [models](#models) above. If you omit it, a default model is used.
+
+**Examples**:
+```text
+inworld.Lauren:inworld-tts-1.5-mini
+inworld.Brian:inworld-tts-1.5-max
+inworld.Asuka:inworld-tts-1.5-mini
+```
+
+You can also set the model with the separate
+[`model`](/docs/swml/reference/ai/languages#use-voice-strings)
+parameter of the [`languages`](/docs/swml/reference/ai/languages) SWML method
+instead of appending `:model` to the voice string:
+
+```yaml
+languages:
+- name: English
+  code: en-US
+  voice: inworld.Lauren
+  model: inworld-tts-1.5-mini
+```
+
+---
+
+## Build with Inworld on SignalWire
+
+<Steps>
+
+### Create a Space and add credit
+
+If you don't have one yet, you'll need to
+[create a SignalWire Space](/docs/platform/signing-up-for-a-space).
+Be sure to add some credit to test with.
+
+### Add a new Resource
+
+<Markdown src="/snippets/common/dashboard/add-resource.mdx" />
+
+### Create a SWML Script
+
+From the Resources menu, select **SWML Script**.
+Name it something fun and recognizable.
+Ours is titled Inworld Wizard.
+
+Next, paste the following starter script into the text box, and hit <kbd>Save</kbd>:
+
+```yaml
+version: 1.0.0
+sections:
+  main:
+  - ai:
+      prompt:
+        text: |
+          You're Lauren, a voice from Inworld's TTS engine!
+          Introduce yourself, and have a conversation about programmable unified communications on the SignalWire platform.
+      languages:
+      - name: English
+        code: en-US
+        voice: inworld.Lauren:inworld-tts-1.5-mini
+```
+
+### Buy and assign a phone number
+
+Navigate to the **Phone Numbers** section of the Dashboard's left sidebar menu.
+
+Purchase a phone number and assign it to the desired SWML script.
+
+<Frame caption="Assigning a phone number to the SWML Script">
+    ![A purchased phone number showing assignment to a specified Resource.](/assets/images/dashboard/phone-numbers/assign-resource-voice.webp)
+</Frame>
+
+### Give it a call!
+
+Call the number you just assigned to chat with your new AI voice application on the phone.
+
+</Steps>
+
+## Next steps with SWML
+
+Now you've deployed your very first SignalWire voice AI application using Inworld voices.
+Next, dive deeper into SWML to explore its capabilities!
+
+<CardGroup cols={3}>
+   <Card
+        title="Methods reference"
+        href="/docs/swml"
+        icon="/assets/icons/swml.svg"
+    >
+        Documentation for all SWML methods
+    </Card>
+    <Card
+        title="AI in SWML"
+        href="/docs/swml/guides"
+        icon="regular wand-magic-sparkles"
+    >
+        Build advanced AI applications using SignalWire Markup Language
+    </Card>
+    <Card
+        title="Guides"
+        href="/docs/swml/guides"
+        icon="regular book-open"
+    >
+    SWML guides and demo applications
+    </Card>
+</CardGroup>