I would think that such an increase in AI capability would basically be AGI...

Just to give a few comparisons, the following things are two orders of magnitude apart:

1. The force felt by a mosquito landing on your arm and getting punched by Mike Tyson in his prime

2. A firecracker exploding and a stick of dynamite exploding

3. The heat from a candle and the heat from a blowtorch

4. The sound from a whisper and the sound from jet engine