- The following voice models are being deprecated and replaced with newer versions:
- ElevenLabs voice models:
eleven_turbo_v2→ replaced witheleven_flash_v2eleven_turbo_v2_5→ replaced witheleven_flash_v2_5
- We have confirmed with ElevenLabs and verified that the Flash models deliver the same voice quality as the Turbo models at lower latency.
- These models are no longer available for new agents. On 7/12/2026, existing agents will be automatically migrated to their replacements.
- ElevenLabs voice models:
Detailed Deprecation Guide
ElevenLabs Turbo models replaced with Flash (07/12/2026)
On 07/12/2026, Retell replaces the ElevenLabs Turbo voice models (eleven_turbo_v2 and eleven_turbo_v2_5) with the Flash equivalents at lower latency.
Unified publish-agent-version endpoint (07/20/2026)
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Legacy list endpoints removed for v2/v3 (06/15/2026)
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