### Answer --- Regarding efficiency/accuracy with multilingual: There are some known challenges with multilingual ASR (speech recognition) . When using bilingual settings (like Hindi-English or Spanish-English) , transcription can become weaker for the second language since streaming ASR has less performance compared to batch processing. [(1) ]() The sources also note that ASR limitations exist—many ASR models are trained on a narrow set of accents, making it difficult to recognize regional variations, and some languages lack robust ASR models. [(2) ]() Regarding supported languages: Retell AI currently supports 31+ languages, including: - Spanish (Spain, Latin America) - Chinese So yes, Spanish and Chinese are supported languages. Regarding cloned voice speaking other languages: The sources don't explicitly confirm whether your specific cloned voice will maintain quality across all supported languages like Chinese or Spanish. Voice cloning platforms generally allow "a cloned voice can greet customers on phone, podcast ads, and kiosks, reinforcing recognition globally" [(3) ]() , but performance may vary by language. For the best results, I'd recommend testing your cloned voice in the target languages to evaluate quality. Check out these potentially useful sources: - [Retell AI Supported Languages]() - [How Multilingual Voice AI Drives Global Sales Growth]() Would you like me to provide a general answer about multilingual voice cloning capabilities?

​ To learn more, see the sources I considered: [[1] Multilingual or Bilingual Transcription](https://discord.com/channels/1186424376300679209/1230269781161279508) [[2] Retell AI Supported Languages - AI for Multilingual Conversations | Retell AI](https://www.retellai.com/blog/how-to-use-ai-phone-agents-for-multilingual-communication) [[3] How Multilingual Voice AI Drives Global Sales Growth | Retell AI | Retell AI](https://www.retellai.com/blog/multilingual-voice-ai-on-global-sales-growth) ​

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

### Answer Correct—if you select *English (e.g.,

en-US

) * as your language setting, transcription should perform at full accuracy for English. [(1) ]() The transcription weakness issue arises specifically when using multilingual mode for code-switching between languages (like Hindi-English or Spanish-English) , where the ASR has to handle multiple languages simultaneously. [(2) ]() If your use case is primarily English-only, selecting an English language option (such as

en-US

,

en-GB

,

en-AU

, etc.) will give you the best transcription accuracy for English. [(1) ]() [(3) ]() If you do encounter transcription issues with specific words or terms, you can use Boosted Keywords to enhance accuracy for names, brands, or domain-specific terminology. [(3) ]()

​ To learn more, see the sources I considered: [[1] Update Voice Agent](https://docs.retellai.com/api-references/update-agent) [[2] Multilingual or Bilingual Transcription](https://discord.com/channels/1186424376300679209/1230269781161279508) [[3] Retell AI Supported Languages - AI for Multilingual Conversations | Retell AI](https://www.retellai.com/blog/how-to-use-ai-phone-agents-for-multilingual-communication) ​

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

### Answer ### Answer When using multilingual mode but speaking in English, there can still be some transcription accuracy reduction compared to selecting English-only. The streaming ASR in multilingual mode has less performance compared to single-language mode, even for the same underlying model. [(1) ]() Additionally, community feedback indicates that multilingual agents can sometimes have issues—even when the caller speaks English, the agent may unexpectedly switch languages mid-sentence if prompts are written in another language. [(2) ]() For the best English transcription accuracy, selecting a dedicated English language option (like

en-US

) is recommended. [(3) ]() If you need multilingual capability but want to optimize for English, you can also consider using the

stt_mode

setting—choosing

"accurate"

mode incurs ~200ms additional latency but provides more accurate transcripts, which may help offset some multilingual accuracy loss. [(4) ]() [(2) ]()

​ To learn more, see the sources I considered: [[1] Multilingual or Bilingual Transcription](https://discord.com/channels/1186424376300679209/1230269781161279508) [[2] Discord message from @kiexperten_60638 on 2025-05-05](https://discord.com/channels/1186424376300679209/1294891368505937952/1368883583053201518) [[3] Retell AI Supported Languages - AI for Multilingual Conversations | Retell AI](https://www.retellai.com/blog/how-to-use-ai-phone-agents-for-multilingual-communication) [[4] Balance between transcription accuracy and latency](https://docs.retellai.com/build/transcription-mode) ​

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

### Answer ### Account Security If you're receiving login codes you didn't request, someone may be attempting to access your account. Retell AI uses Auth0 as their login system to help keep your information safe. [(1) ]() Steps to increase your account security: 1. Reset your password – Go to the login page, click "Don't remember your password?", and follow the instructions sent to your inbox. 2. Switch to Google SSO – For better security, Retell recommends using Sign in with Google, which provides an extra layer of protection and reduces the need to manage separate passwords. Important note: Google SSO and email-password sign-in are treated as separate accounts in the system and are not automatically linked. If you want to switch sign-in methods while keeping access to your workspace, you'll need to: - Log in with your current method - Go to "Workspace" settings and send an invite to your email - Log out and use the alternative sign-in method to create a new account via the invite If you need to change your phone number for 2FA: Contact Retell AI support directly at support@retellai.com. [(2) ]() To report security concerns: You can also reach support at support@retellai.com. [(9) ]()

​ To learn more, see the sources I considered: [[1] Account](https://docs.retellai.com/accounts/account) [[2] change phone number for login](https://discord.com/channels/1186424376300679209/1385535455310778388) ​

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 explicit documentation about a retry setting or configuration to disable automatic retry attempts for the transfer call function. [(1) ]() [(2) ]() The documentation covers transfer configuration options like: - Transfer type (cold vs warm transfer) [(1) ]() - Caller ID settings - Warm transfer-specific settings (on-hold music, IVR navigation, human detection, agent detection timeout) [(1) ]() [(2) ]() However, there's no mention of a retry count setting or how to disable automatic retry behavior. Recommendations: 1. You may be able to handle this through your **prompt instructions**—tell the agent explicitly not to attempt the transfer again if it fails. 2. If you're using Conversation Flow, you can connect the "transfer fails" edge to a node that handles the failure gracefully without retrying. [(2) ]() For a definitive solution to disable retry attempts, I'd suggest reaching out to Retell support at support@retellai.com or checking the [Transfer call documentation]() for any updates. Would you like me to provide a general answer about how retry logic typically works in call transfer systems?

​ To learn more, see the sources I considered: [[1] Transfer call](https://docs.retellai.com/build/single-multi-prompt/transfer-call) [[2] Call Transfer Node](https://docs.retellai.com/build/conversation-flow/call-transfer-node) ​

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