Eelco
02/04/2026, 11:16 AMAdam
02/04/2026, 1:43 PMEelco
02/04/2026, 4:35 PMChiranjeet Mishra
02/06/2026, 11:24 AMeleven_turbo_v2
• eleven_flash_v2
1. ⚠ Phoneme rules do NOT work with eleven_turbo_v2_5
2. Alias rules (word substitutions) - work with all ElevenLabs models, including turbo v2.5
So if you're using pronunciation dictionaries with turbo v2.5, only alias rules will be applied. If you need phoneme-based pronunciation control, you'll need to use eleven_turbo_v2 or eleven_flash_v2.
SSML Support:
SSML parsing can be enabled for ElevenLabs voices via the enableSsmlParsing option. When pronunciation dictionaries are added, SSML parsing is automatically enabled. However, the level of SSML support may vary by model - this is an ElevenLabs-side limitation.
Documentation references:
• Pronunciation dictionaries: [https://docs.vapi.ai/assistants/pronunciation-dictionaries](https://docs.vapi.ai/assistants/pronunciation-dictionaries)
• ElevenLabs voice settings: [https://docs.vapi.ai/voice-fallback-plan](https://docs.vapi.ai/voice-fallback-plan) (see ElevenLabs section)
If you need full phoneme rule support, consider using eleven_turbo_v2 which maintains good performance while supporting all pronunciation dictionary features. Let me know if you have any other questions!