Talk of AI usually brings to mind large models running in the cloud. Growing just as quickly is edge AI: running the model on the device itself, whether a camera, an IoT sensor or a smartphone, instead of sending everything to a server to be processed.
Why edge AI is taking off
- The hardware is ready: many new smartphones and IoT boards include a processor built for AI work (an NPU).
- Smaller models, more capable: techniques such as quantization (compressing a model) and distillation (teaching a small model from a large one) have made on-device models far more capable.
- Privacy: images and audio never leave the device; only the result of the analysis is sent.
Benefits you can measure
Faster response
There is no round trip to a server, so decisions that must be immediate, such as an on-site alert, happen in a fraction of a second, and keep working when the connection drops.
Less bandwidth, lower cost
A camera streaming video to the cloud all day uses a huge amount of data. Analyse on the device and send only the events that matter, and the volume falls sharply. That suits sites running on a SIM card or a limited network.
Where it is used
- Traffic and security cameras: count vehicles and detect incidents, sending only event images and statistics.
- Factory machines: listen to sound or measure vibration to catch the signs before a breakdown (predictive maintenance).
- Environmental monitoring stations: screen out faulty sensor readings before sending, so the data reaching the central system is more reliable.
- Mobile apps: read documents, scan text or translate with no internet connection.
Limits to know about
On-device models are still smaller than cloud models, so very complex tasks still need a server. Managing many devices also matters: updating models remotely and keeping each device secure.
Most good systems are hybrid: devices filter and make urgent decisions, while the cloud gathers data, analyses the big picture and improves the models.
Kathi Studio builds IoT devices, applications and back-end systems. If you want the data from your sites to work harder, we can help design everything from the device to the dashboard.