Speechmatics

Speechmatics provides the speech recognition technology that powers accurate, real-time transcription for Vapi voice applications. The platform delivers 90%+ accuracy with sub-second latency across 55+ languages and dialects, covering over half the world's population. Unlike competitors, Speechmatics models are trained on real-world audio featuring diverse accents, background noise, and code-switching between languages, ensuring reliable performance in challenging conditions. Speaker diarization identifies and labels multiple speakers even in overlapping conversations. Custom dictionary support allows injection of up to 1,000 domain-specific terms for accurate recognition of brand names, industry jargon, and technical vocabulary.

The Medical Model reduces transcription errors on clinical terminology by up to 50%, making it ideal for healthcare applications. Deployment options include cloud API, VPC, and on-premise installations with SOC 2 Type II, HIPAA, GDPR, and ISO 27001 compliance. Speechmatics also offers streaming text-to-speech with sub-150ms latency for complete voice AI pipelines.

Vapi and Speechmatics together enable voice AI agents that understand every voice in real-time, even in noisy, multi-speaker scenarios. Speechmatics' speech-to-text integrates natively with Vapi's platform, providing the transcription accuracy that voice agents need to correctly interpret caller intent and respond appropriately. The combination excels in multilingual deployments where callers may switch between languages mid-conversation, with Speechmatics' code-switching models maintaining accuracy throughout. Organizations use Vapi with Speechmatics to build voice agents for contact centers, healthcare systems, media captioning, and global customer service operations.

The partnership supports use cases requiring strict data compliance, with Speechmatics' flexible deployment options matching enterprise security requirements. Real-time speaker diarization enables voice applications to track who said what in multi-party conversations, while custom vocabulary ensures accurate recognition of product names, medical terms, and specialized terminology from the first interaction.