Neuphonic
Ultra-low-latency voice AI with sub-25ms streaming text-to-speech.
About
Neuphonic is a voice AI platform built for real-time conversational applications, delivering text-to-speech synthesis with sub-25ms latency over WebSocket streaming and server-sent events. It offers instant voice cloning, nine languages, and a conversational Agent API integrating GPT-4o and MCP servers.
Notably, it also ships open-source on-device models (NeuTTS Air and NeuTTS Nano) that run without a GPU. Pricing includes a free tier, a $79/month business plan, and custom enterprise options with on-premises deployment.
What it can do
- Sub-25ms streaming text-to-speech
- Instant voice cloning
- Conversational Agent API with GPT-4o
- Open-source on-device TTS models
- Nine supported languages
Setup
Sign up for API access, or run the open-source NeuTTS models on-device; integrate via REST, WebSocket, or SDKs.
Prerequisites
An API account for cloud use; on-device models need no GPU.
Use cases
Works with
Trust score — 7/10
Scored 7/10 (metrics tier, metrics-v1). Evidence: Verified via vendor site/docs/GitHub and reputable coverage, wave 116; Trending score 74/100 from researcher assessment.
Sources
Every fact above was checked against these sources. Where a claim comes from the provider and couldn't be independently verified, the text says so.