​ To learn more, see the sources I considered: [[1] The 8 Best AI Voice Agents with Multilingual Support | Retell AI](https://www.retellai.com/blog/8-leading-multilingual-ai-voice-agents) [[2] MultiLingual Agents Via Custom LLM](https://discord.com/channels/1186424376300679209/1338725533009182791) ​

### Answer Based on the available sources, I don't have specific documentation about chat channel multilingual behavior or troubleshooting French → English language switching inconsistencies with retell-llm. The sources discuss multilingual support primarily for voice agents. Retell AI supports 31+ languages out of the box and has Auto Language Detection for 10+ languages including English, Spanish, French, German, Hindi, Russian, Portuguese, Japanese, Italian, and Dutch [(1) ]() . However, the specific behavior you're experiencing with chat channel language switching mid-conversation isn't covered in the provided documentation. From a Discord discussion, one community member mentioned that "multilingual agents are only supported for Spanish and English" [(2) ]() , though this may refer to specific features or limitations that aren't fully documented in the sources I have access to. For your specific issue with French → English switching reliability in chat agents, I don't have information about: - Chat-specific multilingual configuration - Language detection behavior differences between voice and chat channels - Troubleshooting asymmetric language switching (French → English vs English → French) I'd recommend checking the official documentation at [Documentation]() or reaching out to a [certified Retell partner]() for assistance with this specific chat channel multilingual behavior.

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