Add changelog for 2025-08-11

[quantstruct-bot]

Description

New Features & Enhancements

1. Enhanced Call Artifacts: You can now store detailed information about call workflows and outcomes using Artifact objects. Key properties include:
   • nodes: History of workflow nodes executed during the call.
   • messages: All messages spoken during the call.
   • logUrl: New! Direct URL to detailed call logs for debugging.
   • pcapUrl: Packet capture URL for phone calls (provider: vapi or byo-phone-number).
   • recording: Recording URL (requires assistant.artifactPlan.recordingEnabled).
   • transcript: Convenient full call transcript.
   • variableValues: Final workflow variable states.
   • messagesOpenAIFormatted: Spoken messages, formatted for OpenAI.

`recordingUrl`, `videoRecordingUrl`, `stereoRecordingUrl`, and `videoRecordingStartDelaySeconds` are now deprecated in favor of the new `recording` and related properties within the `Artifact` object.

2. Improved Azure Speech Segmentation Tuning: You can now fine-tune speech segmentation in your Azure Speech Transcriber using segmentationStrategy, segmentationMaximumTimeMs, and segmentationSilenceTimeoutMs properties for better transcription control. This applies to both Azure Speech Transcriber and Fallback Azure Speech Transcriber.

The `segmentationMaxTimeMs` property in [`AzureSpeechTranscriber`](https://api.vapi.ai/api#:~:text=AzureSpeechTranscriber) has been replaced by `segmentationMaximumTimeMs` for consistency.

Deprecations

messagePlan and backgroundDenoisingEnabled are now part of Assistant.backgroundSpeechDenoisingPlan instead of Assistant and AssistantOverrides directly. stripeCustomerId is now part of Subscription instead of Org. segmentationMaxTimeMs property has been renamed to segmentationMaximumTimeMs for consistency.

Testing Steps

• Run the app locally using fern docs dev or navigate to preview deployment
• Ensure that the changed pages and code snippets work

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