---
title: User Guide: Bring Your Own Model Key for VoiceBot
slug: intelligent-voice-agents/user-guide-bring-your-own-model-key-for-voicebot
docTags: 
createdAt: 2025-12-29T04:53:19.903Z
---

The **Bring Your Own Key (BYOK)** feature allows you to integrate your own API credentials for Speech-to-Text (STT), Large Language Models (LLM), and Text-to-Speech (TTS) services. By providing your own keys, you gain greater control over model usage, billing, and region-specific configurations within your Exotel VoiceBot.

### I. Creating a Model Configuration Rule

Before you can use your own keys in a bot, you must define a configuration rule in the settings.

1. **Navigate to Settings:** From the main side navigation, go to **Settings** > **Model Configuration**.
2. **Add Configuration:** Click the **"+ Add Configuration"** button to open the **New Model Configuration Rule** panel.
3. **Name Your Rule:** Under **Your Model Name**, give your rule a clear, identifiable name (e.g., "Company\_Azure\_STT").
4. **Configure Service Type:** Select the tab for the service you wish to configure:
   - ***STT***** (Speech-to-Text):** Select your provider (e.g., **Speechmatics** or **Azure**).
   - **LLM (Large Language Model):** Supported models currently include existing options such as GPT-4o-mini.
   - **TTS (Text-to-Speech):** Configure providers like Eleven Labs or Google.
5. **Enter API Details:** Provide the required technical details, including:
   - **Region** (if applicable).
   - **API Key\***.
6. **Save:** Click **"Add"** to finalize the rule.

### II. Applying Your Keys in the Bot Builder

Once your configuration rules are created, you can apply them to specific bots through the **Build Bot** interface.

1. **Open Bot Builder:** Navigate to **Build Bot** and select the bot you wish to modify.
2. **Access Configuration Tab:** Click on the **Configuration** tab at the top of the editor.
3. **Select Your Custom Rule:**
   - Navigate to the relevant section (Model, Speech (STT), or Voice (TTS)).
   - Locate the **Configuration Rule\*** dropdown menu.
   - Select the custom rule you created in Step I (e.g., "azure-exotel").
4. **Save Changes:** Click the **"Save"** button in the top right corner to apply your own keys to the bot's runtime.