In almost all aspects, yes. The iPad Pro 11 is a good as its larger sibling. The specs of the two devices are almost exactly the same. The key difference, other than the size, is that the iPad Pro 12.9 boasts a Liquid Retina XDR (extreme dynamic range) display, which offers improved brightness and contrast.
However, many people will find benefits in the iPad Pro 11's smaller form, which makes it easier to hold in one hand, more travel-friendly, and more convenient to use on public transport. And of course, it's also a fair bit cheaper than the larger Pro too. To see where both tablets fit in the wider iPad family see our full iPad generations list.