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Apple’s new predictive text feature appears to be powered by GPT-2

6 points| jackcook | 2 years ago |jackcook.com

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jackcook|2 years ago

Some context: In the upcoming versions of macOS and iOS, Apple is including a predictive text model which offers suggestions while you type, which they’ve said to be a "transformer model". I managed to find some details about this model, including details about its topology (which looks a lot like GPT-2) and its tokenizer, and I was even able to peek in and see several of its top predictions while typing!

Hopefully this can give some insight into some of the trade-offs that Apple went through to put a model on every iPhone and MacBook — it’s small, it has a pretty narrow scope, and it’s not very capable on its own.