Built into Averra

# Prime Edge AI: intelligence that knows where to think

Prime Edge AI is Gateway Global's AI routing technology. A router on the device reads each question and decides where it should be answered: on the phone in your hand, or by a frontier model in the cloud when the question needs it.

Not every health question is the same size. Prime Edge AI decides where each one is answered.

[Talk to an engineer](https://gateway-global.co.uk/contact/engineering/) [Read the technology brief](https://gateway-global.co.uk/insights/briefs/prime-edge-ai/)

Last updated 25 September 2026

_Answered on the device, or sent to the cloud only when needed._

## How it works

Choose a request to see where Prime Edge AI sends it.

1. **Reads the question on the device**
   A router on the device reads each question before anything leaves the device.
2. **Stays on the device for routine tasks**
   Daily check-ins, meal logs and routine readings are answered by Apple's on-device model, through its Foundation Models framework: offline, and with no cost per call.
3. **Goes to the cloud only for harder questions**
   Questions that need years of history, clinical literature or a live search go to a frontier model in the cloud, only when needed. The person sees one conversation.

## Trust built in

- Every device attests itself in hardware.
- No key ships in the app.
- Access tokens expire hourly and carry no identity.

## Why it matters

- **Privacy by architecture**: Routine processing never leaves the handset. When a question needs the cloud, it goes straight to the model with no intermediary.
- **Economics that scale**: Requests answered on the device have no cloud cost, so spend tracks the difficulty of questions, not the number of people asking them.

## Apple first, Android next

Android support, using Google's on-device foundation models, is planned next.

## Where it runs

Prime Edge AI is built into Averra, the digital health twin we are developing.

[Read about Averra](https://gateway-global.co.uk/products/averra/)

## The one-page technology brief

The Prime Edge AI brief sets out the design on a single page, and is published here in full as HTML.

[Read the brief](https://gateway-global.co.uk/insights/briefs/prime-edge-ai/)

## Questions people ask

**What is model routing?**

Model routing means choosing, for each request, which AI model should answer it. Prime Edge AI reads each question on the device and decides whether it can be answered there or needs a frontier model in the cloud.

**What does on-device AI mean?**

On-device AI runs a model on the phone, tablet or computer itself rather than on a server, so a routine request can be answered without leaving the device.

**What is hardware device attestation?**

Hardware device attestation lets a device prove, using keys held in its secure hardware, that it is a genuine device running a genuine copy of the app. With Prime Edge AI every device attests itself in hardware, so no key needs to ship in the app.

## Build with the people who designed it.

[Talk to an engineer](https://gateway-global.co.uk/contact/engineering/)

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Source: https://gateway-global.co.uk/technology/prime-edge-ai/
Updated: 2026-09-25