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Neuphonic

by Neuphonic

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What Neuphonic is

Neuphonic builds voice AI for natural speech and voice interactions through on-device, on-premises, and cloud API deployments. Its API provides real-time text-to-speech, multilingual speech, flexible voices, pronunciation controls, and WAV export. On-device models run on local hardware and can work offline after installation. On-premises deployments run inside an organisation’s servers, private cloud, or secure infrastructure, while the cloud API requires an internet connection. NeuTTS-2E provides English speech with seven emotion modes and four fixed speakers; it does not yet support voice cloning. NeuDecide converts speech into tool calls, and NeuCodec encodes and reconstructs audio. Developers can use an API playground, Hugging Face models, GitHub code, Python and JavaScript SDKs, and integrations for Twilio, LiveKit, Pipecat, and VideoSDK. The service has a free plan, supports commercial use, and targets mobile, desktop, embedded, and wearable hardware.

Who it suits

Neuphonic suits developers and organisations needing local, private-cloud, or cloud voice AI. Its on-premises use cases include enterprises, financial institutions, healthcare providers, and government.

What it does well

  • On-device and on-premises offline operation
  • Real-time multilingual text-to-speech API
  • Python and JavaScript SDKs
  • Commercial use supported
  • Free plan available

What to know first

  • Cloud API requires internet access
  • NeuTTS-2E lacks voice cloning
  • Commercial licensing varies by model
  • NeuTTS-2E offers English speech only

Verdict

Neuphonic offers flexible deployment choices for speech generation and voice interactions, including local and on-premises operation. Model capabilities and licenses differ, so users should match a model to their deployment and commercial needs.

Facts from Neuphonic's own pages

API access
Yes · neuphonic.com, 20 Sept 2026
Audio codec
NeuCodec encodes and reconstructs audio, and the API page describes a speech codec with near-inaudible reconstruction loss. · neuphonic.com, 12 Oct 2026
Commercial licensing
Commercial terms vary by model; NeuDecide and NeuCodec use Apache 2.0, while NeuTTS-2E uses the NeuTTS Open License with commercial-use conditions. · neuphonic.com, 12 Oct 2026
Commercial use
Yes · neuphonic.com, 20 Sept 2026
Company identity
The privacy policy identifies the company as Neuphonic Limited and lists its address as Office 3 Cottam House, 36-40 York Way, London, N1 9AB, United Kingdom. · neuphonic.com, 12 Oct 2026
Developer access
The maker directs developers to its API playground, downloadable models on Hugging Face, and code on GitHub. · neuphonic.com, 12 Oct 2026
Developer tools
Neuphonic offers Python and JavaScript SDKs; its quickstart specifies Python 3.9+ and Node.js 18+. · docs.neuphonic.com, 12 Oct 2026
Device support
The on-device solution targets mobile, desktop, embedded devices and wearables, and supports integration by SDK, API or custom deployment. · neuphonic.com, 12 Oct 2026
Export formats
WAV · neuphonic.com, 20 Sept 2026
Free plan
Yes · neuphonic.com, 20 Sept 2026
Headquarters
London, United Kingdom · neuphonic.com, 28 Sept 2026
Integration
The on-device solution can be integrated through an SDK, API, or custom deployment for mobile, desktop, embedded, and wearable hardware. · neuphonic.com, 12 Oct 2026
Integrations
The developer documentation lists integrations for Twilio, LiveKit, Pipecat and VideoSDK. · docs.neuphonic.com, 12 Oct 2026
Intended users
The on-premises page identifies enterprises, financial institutions, healthcare providers, and government as ideal use cases. · neuphonic.com, 12 Oct 2026
Licensing
Commercial terms vary by model; NeuDecide and NeuCodec use Apache 2.0, while NeuTTS-2E uses the NeuTTS Open License with commercial-use conditions. · neuphonic.com, 12 Oct 2026
Model limits
NeuTTS-2E provides English speech with seven emotion modes and four fixed speakers, and does not yet support voice cloning. · neuphonic.com, 12 Oct 2026
Model portfolio
The site describes NeuTTS-2E as English speech with seven emotion modes and four fixed speakers, and NeuDecide as converting speech into tool calls. · neuphonic.com, 12 Oct 2026
Offline use
On-device and on-prem deployments can run offline after installation, while the cloud API requires an internet connection. · neuphonic.com, 12 Oct 2026
On-device
On-device models run inference directly on user hardware and can operate offline after installation. · neuphonic.com, 12 Oct 2026
On-prem deployment
On-prem deployments run inside an organization’s own servers, private cloud or secure infrastructure, keeping data within that infrastructure. · neuphonic.com, 12 Oct 2026
On-premises
On-premises deployments run within an organisation’s own servers or private cloud, keeping data within its infrastructure. · neuphonic.com, 12 Oct 2026
Platforms
web,api,self_hosted · neuphonic.com, 20 Sept 2026
Privacy
The maker says on-device processing keeps voice data local and on-prem deployment gives organizations control over sensitive data and infrastructure. · neuphonic.com, 12 Oct 2026
Product
Neuphonic builds voice AI for natural speech and voice interactions through on-device, on-premises, and cloud API deployments. · neuphonic.com, 12 Oct 2026

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