Gladia

Gladia provides the speech-to-text infrastructure that powers accurate, real-time voice understanding at scale. Their Solaria model delivers industry-leading transcription with sub-300ms latency for real-time streaming and sub-103ms partial transcripts, enabling smooth conversational AI experiences without awkward delays.

The platform stands out for its precision on the details that matter most in voice agent interactions: accurate capture of names, email addresses, phone numbers, and company-specific terminology. With support for 100+ languages, including 42 that are exclusive to Gladia, the API handles multilingual conversations and code-switching without breaking transcripts.

Beyond core transcription, Gladia offers audio intelligence features including speaker diarization, sentiment analysis, named entity recognition, and summarization. The API is optimized for telephony protocols including SIP and 8kHz audio, fitting natively into contact center and voice agent workflows. With GDPR, HIPAA, and SOC 2 compliance, the platform meets enterprise security requirements without charging extra for data privacy.

Vapi and Gladia together deliver voice agents with exceptional speech understanding and conversational fluency. By integrating Gladia's Solaria speech-to-text model into Vapi's voice agent platform, developers gain real-time transcription that keeps pace with natural conversation while capturing critical details accurately.

The integration leverages Gladia's sub-300ms latency transcription to ensure voice agents can process and respond to user speech without perceptible delays. This speed enables natural turn-taking and reduces the friction that occurs when agents pause too long before responding. For contact center and customer support applications, Gladia's optimization for telephony audio quality and SIP protocols ensures reliable performance on real-world call infrastructure.

Customers benefit from Gladia's accuracy on entity extraction, meaning voice agents built on Vapi can reliably capture names, email addresses, phone numbers, and other key data points during conversations. This enables automated workflows like CRM updates, appointment scheduling, and order processing without manual correction. The combination of Vapi's conversational AI capabilities with Gladia's precise multilingual transcription allows businesses to deploy voice agents globally, handling customer interactions across languages with consistent quality.