Resolved after 53 minutes, on November 3, 2026.
Between 09:27 and 10:20 CET, some voice calls using Soniox for TTS experienced an increased error rate. Cached predefined messages, such as the welcome message, played as normal. After that, Soniox TTS requests failed and responses were spoken by the configured fallback TTS provider instead. The issue is resolved. The error rate for Soniox text-to-speech (TTS) returned to normal at 10:20 CET and has remained stable since. What was affected: - Soniox TTS on some instances - Soniox speech-to-text (STT) was not affected Recommendation: configure a fallback TTS provider: Agents with a fallback TTS provider kept speaking to callers throughout the incident, just in a different voice. If you haven’t set one up yet, we strongly recommend adding a fallback provider in your voice settings so that an issue at one provider doesn’t interrupt your callers. Thank you for your patience. If you have any questions, please submit a ticket.
Update timeline
- resolved Nov 03, 2026, 08:30 AM UTC
Between 09:27 and 10:20 CET, some voice calls using Soniox for TTS experienced an increased error rate. Cached predefined messages, such as the welcome message, played as normal. After that, Soniox TTS requests failed and responses were spoken by the configured fallback TTS provider instead. The issue is resolved. The error rate for Soniox text-to-speech (TTS) returned to normal at 10:20 CET and has remained stable since. What was affected: - Soniox TTS on some instances - Soniox speech-to-text (STT) was not affected Recommendation: configure a fallback TTS provider: Agents with a fallback TTS provider kept speaking to callers throughout the incident, just in a different voice. If you haven’t set one up yet, we strongly recommend adding a fallback provider in your voice settings so that an issue at one provider doesn’t interrupt your callers. Thank you for your patience. If you have any questions, please submit a ticket.
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