### Answer Based on the available information, Retell AI does not currently support bringing your own API keys from third-party platforms [(1) ]() . When asked about adding custom API keys (specifically for ElevenLabs) , the Retell team stated: "We dont have bring your own key right now. May consider it in the future" . This applies to API keys from any external platform, including SerrumAI or GROK voice platforms you mentioned. Currently, you would need to use Retell AI's built-in integrations and billing for voice services. If this is a critical requirement for your use case, you may want to reach out to the Retell team directly to discuss potential custom arrangements or timeline for this feature. **

​ To learn more, see the sources I considered: [[1] Add own ElevenLabs API key (ElevenLabs Grant)](https://discord.com/channels/1186424376300679209/1232659853676253245) ​

Feel free to tag @AI Evy with additional questions. I also appreciate feedback, it helps me improve.

### Answer Based on the available sources, I don't have specific information about using Grok voice API with Retell AI. The sources indicate that Retell AI uses Deepgram for speech-to-text [(1) ]() , and the platform doesn't currently support bringing your own custom speech-to-text or text-to-speech models . For API integrations more broadly, Retell AI supports connections to external systems through webhooks and API integrations [(2) ]() , but these are typically for business logic (like CRM systems, databases, and other tools) rather than replacing core voice processing components. If you're looking to integrate a specific voice API like Grok, I'd recommend: 1. Checking the [official documentation]() for the latest integration capabilities 2. Reaching out to Retell AI support directly to discuss your specific use case Would you like help with anything else related to Retell AI's current integration capabilities?

​ To learn more, see the sources I considered: [[1] Can we use our own speech-to-text Model instead?](https://discord.com/channels/1186424376300679209/1241514840091262986) [[2] API Integration](https://www.retellai.com/glossary/api-integration) ​

Feel free to tag @AI Evy with additional questions. I also appreciate feedback, it helps me improve.