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Match Accent to Market

Pick a voice accent that matches your caller’s region. This improves trust and comprehension.
MarketRecommended accent
North AmericaUS English
EuropeUK English
ANZAustralian English
MexicoMexican Spanish
SpainCastilian Spanish
ArgentinaArgentine Spanish
BrazilBrazilian Portuguese
PortugalEuropean Portuguese
Test with native speakers in your target market before going live.

Language

Each agent has a Language dropdown in the conversation settings sidebar. Pick the language, then assign a voice in that same language. Mismatched voice/language pairs cause noticeable pronunciation problems. Thoughtly supports 36 languages. If you need a language that is not listed in the dropdown, contact support. To serve callers in multiple languages, create a separate agent per language with matching voice and Genius knowledge base.

Speed (Cartesia)

Cartesia voices have a Voice Speed slider in the Presence section of the Agent Builder sidebar. The slider runs from 0 (slowest) to 100 (fastest), with 50 as the default. Small adjustments of 10 points are noticeable. The slider is disabled when a non-Cartesia voice is active.

Volume (Coming Soon)

A volume slider for Cartesia voices is in development and will appear alongside the speed control in Presence settings.

Pronunciation Fixes

If your agent mispronounces names, brands, or industry terms:
  1. Phonetic spelling in prompts: write “Thought-lee” instead of “Thoughtly”
  2. Genius pronunciation guide: add entries to your Genius knowledge base with the correct spoken form
  3. Voice cloning: clone a voice that naturally handles your domain vocabulary