Deepgram had an issue while upgrading their system, which caused 429 errors. They've fixed it and are implementing controls to prevent recurrence.

We are currently observing elevated error rates affecting calls that use the Deepgram transcriber. Impacted calls may terminate unexpectedly with the ended reason call.in-progress.error-vapifault-deepgram-transcriber-failed.

While we work to resolve this, we recommend switching to an alternative transcriber or configuring a transcriber fallback plan to ensure call continuity. You can set up fallbacks by following the guide here: https://docs.vapi.ai/customization/transcriber-fallback-plan

We are actively monitoring the situation and will provide updates as more information becomes available.