For a multilingual speech-to-text API with good accuracy, Rev AI is a strong contender. It can transcribe in 58 languages and transcribe in real time in 9 languages, and it also offers related features like language detection, sentiment analysis and topic extraction. The service is designed to meet high security requirements, and pricing is flexible with both machine and human transcription options.
Another top contender is AssemblyAI, which supports more than 99 languages and offers integration tools for developers. Its speech-to-text models are trained on 12.5 million hours of multilingual audio data, and it offers features like streaming speech-to-text and speaker diarization. The company places a priority on data security and privacy, following several international standards.
Deepgram offers a range of APIs for speech-to-text, text-to-speech and audio intelligence. Its speech-to-text API supports multiple languages and offers detailed transcription data useful for speech analytics and media transcription. Deepgram also offers a free API playground and a variety of pricing tiers.
Last, Gladia offers an AI transcription API with high accuracy, supporting 99 languages and offering features like speaker diarization and word-level timestamps. It can be easily integrated with a variety of tech stacks and offers end-to-end security and encryption. Gladia offers a variety of pricing tiers, including a free option, so it can be used for a variety of business needs.