Upgraded Babel Model + Language Locking

Upgrade to Babel, our in-house transcription engine, along with new language-locked variants for improved accuracy.

• Babel becomes more accurate over the course of the call using contextual speech refinement - New API options support locked languages like English, Spanish, French, and more (e.g. babel-en, babel-es, babel-fr) - Language locking improves recognition accuracy by removing the need for auto-detection - Low-confidence audio is now marked with [inaudible], allowing your agent to respond or prompt naturally