### Answer Based on the TTS provider comparison, ElevenLabs is generally considered the most natural sounding option and performs best for niche accent needs. [(1) ]() Here's a quick breakdown of the providers: - **ElevenLabs**: Best for most natural sounding voices; best support for niche accent needs - **Cartesia**: Natural sounding with stronger spelling accuracy than ElevenLabs - **MiniMax**: Most consistent tone but can sometimes feel more robotic The general rule is: if you need the most natural sound, go with ElevenLabs (or Cartesia) . However, there's a community report noting that a Dutch voice from ElevenLabs had "a weird English accent" when used in Retell. [(2) ]() This suggests you may need to test different voices to find one that sounds natural for Dutch specifically. I'd recommend testing voices from both ElevenLabs and Cartesia to see which sounds best for your Dutch use case.

​ To learn more, see the sources I considered: [[1] TTS provider comparison](https://docs.retellai.com/build/tts-provider-comparison) [[2] Dutch voice has english accent when used in Retell](https://discord.com/channels/1186424376300679209/1254792734288510986) ​

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

### Answer Sentences being "broken off" with Cartesia is likely related to pacing/tone consistency, which is a known consideration for that provider. [(1) ]() According to the TTS provider comparison: - **Cartesia**: "Pacing/tone can sometimes be less consistent than ElevenLabs" - **ElevenLabs**: Best for most natural sounding voices, though you may occasionally notice small pacing/tone quirks This aligns with your experience—ElevenLabs tends to have more consistent pacing, while Cartesia can have inconsistencies in tone and pacing that may manifest as sentences being cut off or sounding choppy. A few things to try: 1. **Check turn-taking/VAD settings**: The issue could also be related to buffer latency where the TTS engine is finishing its current "chunk" before a stop command hits. [(2) ]() Tweaking VAD thresholds may help. 2. **Adjust voice response speed**: If your agent is responding too quickly between utterances, the TTS might not complete sentences properly. [(3) ]() 3. **Switch back to ElevenLabs**: If Cartesia's pacing issues persist for your Dutch use case, ElevenLabs may be the better choice despite any accent concerns. If the issue continues, sharing a call ID with Retell support would help them investigate further.

​ To learn more, see the sources I considered: [[1] TTS provider comparison](https://docs.retellai.com/build/tts-provider-comparison) [[2] Discord message from @m.uzairafzal on 2026-02-22](https://discord.com/channels/1186424376300679209/1186462578310910112/1475223131466764288) [[3] TTS](https://discord.com/channels/1186424376300679209/1387743989490389052) ​

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