I'm somewhat taken aback by the scant number of reviews this tool has garnered.
I've experimented with comparable tools in the past, such as SheetAI and SheetMagic.
However, I must admit that Numerous.ai stands out as my top pick by a significant margin.

Here's what I appreciate the most about Numerous.ai:

Firstly, the user interface (UI) is exceptionally user-friendly.
They've done an impressive job of showcasing the instructions and examples for each formula directly in the sidebar, eliminating the need to refer to a help file constantly. Furthermore, many formulas offer a remarkably intuitive fill-in-the-blank feature. Simply complete the fields and hit Enter, witnessing the desired result manifest in the designated cell—it's practically magic!
Their clear segmentation of features for various formula is indicative of a well-conceived design, bearing the user's perspective in mind.

And let's not overlook the fact that there's no requirement to link to your personal OPEN AI API key!
This proves to be a significant asset for managing your budget effectively! Plus, it allows you to monitor the number of remaining tokens directly from the sidebar, which is a handy feature.

However, I can't help but notice a slight lag with Numerous.ai. This might be attributed to the substantial volume of data I've uploaded. Moreover, I've observed that specific tasks tend to deplete the tokens at a brisker pace. For instance, when I employed the INFER & Translate feature on a batch of 2600 data lines, the translation of this data consumed around 1000 tokens. Yet, the Infer operation seemed to burn through tokens at a considerably quicker rate, exhausting over 2000 in a single session.
For those who frequently manage extensive datasets, I'd highly recommend opting for the Tier4 package!