Changelog

What’s New

Compliance & Security Enhancements

• New CompliancePlan Consolidates HIPAA and PCI Compliance Settings: You should now enable HIPAA and PCI compliance settings with Assistant.compliancePlan.hipaaEnabled and Assistant.compliancePlan.pciEnabled which both default to false (replacing the old HIPAA and PCI flags on Assistant and AssistantOverrides).

• Phone Number Status Tracking: You can now view your phone number status with GET /phone-number/{id} for all phone number types (Bring Your Own Number, Vapi, Twilio, Vonage) for better monitoring.

Advanced Call Control

• Assistant Hooks System: You can now use AssistantHooks to support call.ending events with customizable filters and actions
  • Enable transfer actions through TransferAssistantHookAction. For example:

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{
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  "hooks": [{
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    "on": "call.ending",
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    "do": [{
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      "type": "transfer",
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      "destination": {
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        // Your transfer configuration
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      }
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    }]
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  }]
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}

• Conditionally execute hooks with Assistant.hooks.filter. For example, trigger different hooks for call completed, system errors, or customer hangup / transfer:

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{
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  "assistant": {
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    "hooks": [{
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        "filters": [{
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          "type": "oneOf",
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          "key": "call.endedReason",
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          "oneOf": ["pipeline-error-custom-llm-500-server-error", "pipeline-error-custom-llm-llm-failed"]
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        }]
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      }
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    ]
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  }
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}

Model & Voice Updates

• New Models Added: You can now use new models inside Assistant.model[provider="google", "openai", "xai"] and Assistant.fallbackModels[provider="google", "openai", "xai"]
  • Google: Gemini 2.0 series (flash-thinking-exp, pro-exp-02-05, flash, flash-lite-preview)
  • OpenAI: o3 mini o3-mini
  • xAI: Grok 2 grok-2

• New PlayDialog Model for PlayHT Voices: You can now use the PlayDialog model in Assistant.voice[provider="playht"].model["PlayDialog"].

• New nova-3 and nova-3-general Models for Deepgram Transcriber: You can now use the nova-3 and nova-3-general models in Assistant.transcriber[provider="deepgram"].model["nova-3", "nova-3-general"]

API Improvements

• Workflow Updates: You can now send a workflow.node.started message to track the start of a workflow node for better call flow tracking

• Analytics Enhancement: Added subscription table and concurrency columns in POST /analytics for richer queries about your subscriptions and concurrent calls.

Deprecations