### Answer The "Speak After Execution" setting behaves differently depending on your agent type and mode [(1) ]() : In Flex Mode: There is no "Speak After Execution" setting available. The agent will always speak after function execution . In Traditional Conversation Flow and Single/Multi-Prompt: You can configure "Speak After Execution" for custom functions [(2) ]() [(3) ]() . When enabled (which is the default) , the LLM speaks about the result after execution. You can turn it off if you want the tool to run silently . The key difference is that Flex Mode compiles your conversation flow into a single structured prompt, which changes how speech behavior is handled. In this mode, the agent automatically continues speaking after function calls without needing the explicit "Speak After Execution" toggle [(1) ]() . For Code Tools specifically, "Speak After Execution" is available and enabled by default, allowing the LLM to speak about the result. You can disable it to run the tool silently (useful for background logging) [(3) ]() .

​ To learn more, see the sources I considered: [[1] Flex Mode](https://docs.retellai.com/build/conversation-flow/flex-mode) [[2] Integrate any system with custom function](https://docs.retellai.com/build/single-multi-prompt/custom-function) [[3] Code Tool](https://docs.retellai.com/build/single-multi-prompt/code-tool) ​

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