Speechmatics

Speechmatics provides speech APIs powering voice AI, centered on a speech to text API that converts spoken audio into written text inside an app, product, or workflow. Its homepage FAQ explains the job plainly: the API can process recorded files or live audio, then return transcripts for captions, search, analytics, records, and voice AI. Live transcription is a headline use, with real time speech to text in 350 milliseconds, and the platform is built for scale across healthcare, live media, and other real world settings where latency, multilingual support, and accuracy decide whether a voice feature works in production. Language and conversation handling are core strengths on the page. Speechmatics supports more than 55 languages, with coverage across accents, dialects, and code switching, where speakers move between languages mid sentence, and it describes itself as multilingual by design and built for real conversations. Speaker diarization identifies and separates individual speakers in meetings, calls, legal proceedings, and healthcare consultations. On accuracy, the homepage cites independent testing by Pipecat as of August 2026 in which Speechmatics returned a 1.07 percent pooled word error rate, the lowest of the 12 services benchmarked, and it shows a 4.8 rating from 57 reviews. Deployment and compliance are treated as first class features. The homepage says teams can deploy anywhere with no data logging, across cloud, on premise, and on device options, and lists ISO 27001, GDPR, HIPAA, and SOC 2 Type II compliance, which matters for regulated and sensitive deployments. Named use cases include medical and healthcare, voice agent builders, media and broadcast live captioning, contact center analytics, courtroom legal transcription, and meeting note taking. Case studies on the page include Adobe using on device transcription for Premiere, LiveKit enabling more than 100,000 developers, NCI reporting a 99 percent increase in automated captioning usage, and Stenograph bringing on device speech recognition to legal voice reporting. Speechmatics suits teams that need accurate, fast, multilingual speech recognition they can run wherever their data has to stay.