Soniox

The platform provides a unified API for real-time speech-to-text, text-to-speech, and speech translation across 60+ languages that handles multilingual conversations, language switching, multi-speaker and noisy audio with low latency. It sells to developers, engineering and product teams at startups and enterprises building voice products, agents, call centers and transcription applications. It is positioned as a single-platform alternative to stitching multiple voice providers, delivering all three capabilities through one API with sub-200ms latency.

Key features

• Real-time speech-to-text in 60+ languages
• Text-to-speech in 60+ languages
• Real-time speech translation 3600 pairs
• Sub-200ms latency streaming
• Seamless language switching mid-sentence
• Multi-speaker conversation transcription
• Instant voice cloning
• Audio tags for expressive speech
• Alphanumeric accuracy for codes and addresses
• Low-latency streaming TTS generation
• Context-aware translation
• Single unified API for voice stack