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What's New: Week of June 22, 2026

Gemini 3.5 Flash and 3.1 Flash-Lite: Google's Gemini 3.5 Flash and 3.1 Flash-Lite models are now available for assistants. Soniox stt-rt-v5: A new stt-rt-v5 real-time speech-to-text model is…

What's New: Week of June 15, 2026

Claude Haiku (Global): Now available as a model through Amazon Bedrock for assistants. Pronunciation Dictionary Management in Voice Config: Pronunciation dictionaries configured via the API can now…

What's New: Week of June 1, 2026

xAI Speech-to-Text and Text-to-Speech: xAI is now available as a transcriber (STT) and voice (TTS) provider for assistants. Upgraded Vapi Voices: A new text-to-speech model powering Vapi Voices makes…

What's New: Week of May 25, 2026

Dashboard Performance: Front-end infrastructure improvements for faster page loads and a snappier feel across the dashboard.

What's New: Week of May 18, 2026

Responsive UI Polish: A round of UI adjustments to make the app work better across viewport sizes. New Composer-Based Onboarding Flow: A new onboarding experience built on top of the Assistant…

What's New: Week of May 11, 2026

New Assistant Builder Experience: An updated, streamlined assistant configuration experience, now available to all users. UI optimizations for the Phone Numbers page were also made to align its look…

What's New: Week of May 4, 2026

Soniox — General Availability: The Soniox transcriber is now rolled out to all customers. Configure it on any assistant via assistant.transcriber (provider: soniox) for low-latency, multilingual…

What's New: Week of April 27, 2026

Deepgram Flux — Multilingual Support: Full support for Deepgram's multilingual Flux model. Multilingual agents can now leverage the same smart turn-taking that powers the English Flux transcriber,…

What's New: Week of April 20, 2026

Logs UX Refresh: New filter layout plus a round of UX improvements — improved date picker, active row is clearly highlighted across all log views when the flyout is opened, log tables are fully…

What's New: Week of April 13, 2026

Monitoring — GA: Automated call quality monitoring is now generally available. Detect issues with trigger-based rules, get alerts when something goes wrong, and surface resolution suggestions — all…

What's New: October 2025 – March 2026

Here's a summary of major items shipped from October 2025 through March 2026.

Breaking Changes & API Cleanup

Legacy Endpoint Removal: The following deprecated endpoints have been removed as part of our API modernization effort: /logs - Use call artifacts and monitoring instead /workflow/{id} - Access…

Evaluation Execution & Results Processing

Evaluation Execution Engine: Run comprehensive assistant evaluations with EvalRun and CreateEvalRunDTO. Execute your mock conversations against live assistants and squads to validate performance and…

Voicemail Detection & Handling Improvements

Enhanced Beep Detection: Improve voicemail detection accuracy with CreateVoicemailToolDTO.beepDetectionEnabled specifically for Twilio-based calls. This feature detects the characteristic beep sound…

Advanced Analytics & Variable Grouping

Variable Value Analytics: Gain deeper insights into your assistant performance with AnalyticsQuery.groupByVariableValue. Group analytics data by specific variable values extracted during calls for…

Chat Transport & SMS Integration

Twilio SMS Transport: Send chat responses directly via SMS using TwilioSMSChatTransport in CreateChatDTO.transport. This enables programmatic SMS conversations with your voice assistants, bridging…

API Versioning & Infrastructure Updates

API Version 2 Introduction: Access enhanced functionality through new versioned endpoints while maintaining full backward compatibility: /v2/call: Enhanced call management with new features and…

Squad Management & Session Enhancement

Squad-Based Sessions: Organize your assistants into collaborative teams with Session.squad and Session.squadId. Sessions can now be associated with squads for team-based conversation management and…

Voice Enhancements & Minimax Improvements

Minimax Voice Language Support: Enhance multilingual conversations with MinimaxVoice.languageBoost. Support for 40+ languages including: Chinese and Chinese,Yue for Mandarin and Cantonese English,…

Enhanced Transcription Features & Speech Processing

Gladia Transcription Enhancements: Improve transcription accuracy and performance with new GladiaTranscriber features: region: Choose between us-west and eu-west for optimal latency and data…