What's New?

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 keyboard-accessible, sortable cost and duration columns, pagination, and more.

Squads contextEngineeringPlan Handoff Type — previousAssistantMessages: Forwards only the conversation history from before the current assistant’s session. The current assistant’s own messages and tool calls are excluded entirely from the handoff payload. See the updated handoff context configuration docs.

assistant.speechStarted Event — Live Captions & Word-Level Timing (GA): A new opt-in message fires as the assistant begins speaking each segment, carrying the full turn text, turn, source (model / force-say / custom-voice), and optional timing:

• Per-word alignment on ElevenLabs
• Cursor-based word-progress on Minimax (set voice.subtitleType: "word", with correct CJK handling)
• Text-only fallback on all other providers

Subscribe by adding "assistant.speechStarted" to your assistant’s clientMessages and/or serverMessages — now GA with no feature flag. Use it for live captions, karaoke-style highlighting, or any UI that needs to stay in sync with assistant audio. Fully backward-compatible; no existing messages changed.

Autofallbacks on Transcribers: Let Vapi pick the best transcriber to fall back to if your primary one fails — even mid-call. Opt in by setting assistant.transcriber.fallbackPlan.autoFallback.enabled to true. See the updated transcriber fallback plan docs.