Sayna

Sayna is a voice and messaging layer for AI agents. It gives developers a single API for text to speech, speech to text and voice streaming, so an agent built on any framework can hold spoken conversations without the builder wiring up each audio provider separately. The platform abstracts the underlying speech providers. Developers can switch between text to speech services without changing their agent code, and the same applies to speech recognition. Sayna handles real time transcription, language detection, low latency audio streaming, buffer management and voice activity detection, which works out when a caller starts and stops speaking so conversations feel natural. A built in SIP server connects agents to phone systems, and automatic voice analytics and transcripts come with the calls. It is aimed at developers building voice enabled agents. The vendor lists integrations with PydanticAI, LangChain and LlamaIndex, and says any custom agent works. Client languages named include Python, JavaScript, TypeScript, Go and Rust, and documentation is available from the site. Pricing is published as a flat $0.04 per minute for complete speech to text and text to speech processing, with no setup fees. The site does not show a separate plan table.