Gladia Speech-to-Text API (Solaria)

Gladia SAS is a speech-to-text company whose legal notice gives a registered office in Roubaix, France. It sells a speech recognition API to product teams and enterprises, with 100 supported languages including Vietnamese, and states that it serves 2,000+ enterprise teams.

The API supports real-time and asynchronous transcription, with code-switching and automatic language detection built in, so Vietnamese-English speech is followed within one request. Audio intelligence add-ons cover summarization, sentiment, entity recognition, PII redaction and translation. Solaria-3, released in June 2026, targets noisy conversational business audio; Solaria-1 keeps the 100+ language coverage.

• Real-time STT: low-latency streaming transcription in 100 languages including Vietnamese.
• Async STT: batch transcription of recorded audio with speaker diarization.
• Code-switching: Vietnamese-English mixed speech followed automatically.
• Audio intelligence: summarization, sentiment analysis, named entity recognition and PII redaction.
• Translation: transcribe and translate into one or more languages in the same request.
• Enterprise options: custom models, fine-tuning, zero data retention and dedicated infrastructure.

Transcription and QA of Vietnamese call-centre recordings. Meeting-notes features inside Vietnamese SaaS products via API. Compliance call recording and search for financial institutions.

Pay-as-you-go pricing starts at 0.16 EUR per hour for async on Solaria-3 and 0.68 EUR per hour for real-time. New accounts receive 50 EUR in free credits valid for one year. Enterprise plans add custom models, zero data retention and SLAs, and the service lists SOC 2 Type II, ISO 27001, HIPAA and GDPR compliance.

Meeting assistants, contact-centre analytics and voice agents increasingly rely on third-party speech APIs that handle accents and code-switching. Vietnamese and other Southeast Asian languages are now offered by European vendors alongside local providers.

Gladia SAS, registered at 2 rue Kellermann, Roubaix, France (RCS Lille Metropole), per its legal notice; a Gladia Inc. entity also appears in its legal links. Startup Studio programme offers 3,000 USD in credits for startups. Solaria-3 published 2026-06-10.