### Answer Retell doesn't have a direct "train from uploaded call recordings" feature where the agent learns automatically from audio files in the UI [(1) ]() . Instead, the training process works differently: once calls are recorded and transcribed, you can use those transcripts to manually improve your agent's prompt, knowledge base, or add few-shot examples . The "training" is essentially prompt refinement rather than automatic learning from uploads . To improve your agent using real call recordings: 1. Record and transcribe your client's calls through Retell 2. Copy the transcripts from completed calls 3. Use those transcripts to refine your agent's system prompt, add relevant examples, or update your knowledge base manually This approach lets you leverage real conversation patterns and scenarios from your client's calls to make the agent more effective for their specific use case.

​ To learn more, see the sources I considered: [[1] Discord message from @ritaheritage on 2026-04-16](https://discord.com/channels/1186424376300679209/1186462578310910112/1494456121635639436) ​

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