Sonix

Sonix is an AI transcription platform founded in San Francisco in 2017. It converts audio and video files into searchable, auditable structured text, with a focus on multilingual support, captions, and compliance for professional settings such as media, research, legal, and healthcare.

Core capabilities

• Multilingual transcription and translation: Officially 54+ languages for both transcription and translation; translation costs nothing extra (it draws on your transcription allowance) and billing is per second.
• Captions and burn-in: Generates SRT/VTT automatically and supports burn-in captions; Sonix says it offers 18+ export formats.
• AI Workspace: Summaries, chapters, sentiment and entity recognition, plus questions across multiple transcripts.
• Collaboration and API: Multi-seat permissions, shared folders, per-user quotas; REST API + Webhooks + Zapier, with integrations including Zoom/Teams/Premiere.
• Security and compliance: SOC 2 Type II, HIPAA (BAA available), AES-256 encryption, and an explicit commitment not to train models on user content.
• Flexible billing: PAYG at $10/hr with no monthly fee, or a subscription with bundled hours; overage is a flat $10/hr.

Who it is for Media and content teams, journalists, academic researchers, and regulated industries such as legal and healthcare — users who need high-accuracy transcription of pre-recorded files, multilingual translation, caption production, and compliance auditing. It does not do live meeting notes; teams that need a live bot should choose another tool.

Distinctive strengths Unlike meeting-oriented tools such as Otter.ai and Fireflies, Sonix is a file-based, multilingual, compliance-focused platform with no live bot. It is faster and cheaper than Rev's human transcription; compared with TurboScribe (about $0.05/hr) it costs 1–2 orders of magnitude more, in exchange for stronger editing, translation, and compliance capabilities.

Editorial assessment The combination of multilingual support, translation, captions, and enterprise compliance gives Sonix a clear identity and solid reviews (Trustpilot 4.6/1,122; Capterra 4.9). Be wary, though, of the "99% accuracy" marketing line: the company's own languages page states 85–99%, and an official comparison article concedes about 92.83% in independent testing. Performance is excellent on clear audio but drops noticeably with noisy audio, multiple speakers, or conversational Chinese. Pricing runs high, refunds are never granted, and subscriptions renew automatically by default — points to settle before buying.