I'm experiencing issues with our Vapi voice agent exhibiting unpredictable speech behavior during conversations. The agent randomly deviates from its normal tone and cadence, creating a poor user experience. Specific Issues: Over-enunciation: The agent randomly over-pronounces certain words with exaggerated emphasis Inconsistent tone: The agent suddenly shifts to overly dramatic delivery mid-conversation Pitch variations: The agent unexpectedly switches to a high-pitched voice Example: When requesting the caller's name, instead of maintaining the conversational tone established throughout the call, the agent says "NAAAAAAAAAAAAAMMMMMMME" in an exaggerated, high-pitched voice. Request: I'm looking for guidance on: Best practices for maintaining consistent speech patterns Configuration adjustments to prevent these erratic behaviors Any prompt engineering techniques that might help stabilize the agent's delivery Any tips or solutions would be greatly appreciated!

Thank you for describing the issue in detail. To help pinpoint the cause of the inconsistent speech patterns, could you please let me know which voice provider and model (e.g., OpenAI, ElevenLabs, PlayHT, and the specific voice or version) you are currently using for your Vapi agent? This will help me suggest the most effective configuration and prompt engineering adjustments. Sources: - [Speech configuration](https://docs.vapi.ai/customization/speech-configuration) - [Voice pipeline configuration](https://docs.vapi.ai/customization/voice-pipeline-configuration) - [OpenAI Realtime](https://docs.vapi.ai/openai-realtime)

The Voice Provider is Eleven Turbo V2_5 and the LLM is OpenAI Mini Cluster 4.0. I can send you a recording of one call if you need it where she's is off the rails when asking for a name. The temperature is set at 3. The Stability 0.78 | Clarity & Similarity 0.55 | Speed .98 | Style Exaggeration 0.1 | Optimize Streaming Latency 3 | Auto Mode on.

Hey We faced similar tone and over-enunciation issues earlier, and a few tweaks really helped: Set stability: 0.85, similarity_boost: 0.8, and temperature: 0.4 to make speech smoother and reduce random pitch changes. Add a guiding prompt like: “Speak in a calm, natural, and steady conversational tone. Avoid exaggeration or dramatic emphasis.” Also, keep prompts clean — avoid extra punctuation (!!!, …) or all caps, which can cause erratic delivery. After these adjustments, our agent’s speech became much more consistent and natural. ✅

Thanks for the tips @Lakshay Julka

Hi DebFiore, If you're experiencing issues with your voice agent, such as it sounding robotic or unnatural, there are a few potential solutions you can try: 1. Review Voice Settings: Ensure you're using a suitable voice provider for your requirements. Options are available, such as ElevenLabs, Hume, and Vapi voices. Each provider offers different voice IDs and models, which you might need to adjust based on quality needs. 2. Change Voice Providers: Switch to a different voice provider to improve speech quality. Providers like [ElevenLabs](https://status.elevenlabs.io/) and [Vapi](https://status.vapi.ai/) may offer better performance depending on your specific context. 3. Check Call Logs: Use the [Vapi dashboard](https://dashboard.vapi.ai/) to review call logs, especially to verify where the speech quality drops. Navigate to

Observe > Call Logs

to examine call transcripts for any anomalies. For a comprehensive guide on fixing common voice issues, please refer to the [debugging guide](https://docs.vapi.ai/debugging). I hope this helps to improve your voice agent's performance. If you need further assistance, feel free to provide more details about the specific issue you are encountering.