When /humans/ bring up the idea of integrating LLMs into UIs, I think most of the time the sentiment comes from legitimate frustration about how the UI is currently designed. To be clear, this is a very different thing than a company shimming copilot into the UI, because the way these companies use LLMs is by delegating tasks away from users rather than improving their existing interfaces to complete these tasks themselves. There are /decades/ of HCI research on adaptive interfaces that address this, in the advent of expert systems and long before LLMs -- it's more relevant than ever, yet in most implemenations it's all going out the window!
My experience with accounting ^H^H^H^H^H^H^H^H^H^H bookkeeping / LLMs in general resonates with this. In gnu cash I wanted to bulk re-organize some transactions, but I couldn't find a way to do it quickly through the UI. All the books are kept in a SQL db, I didn't want to study the schema. I decided to experiment by getting the LLM to emit a python script that would make the appropriate manipulations to the DB. This seemed to take the best from all worlds -- the script was relatively straightforward to verify, and even though I used a closed source model, it had no access to the DB that contained the transactions.
Sure, other tools may have solved this problem directly. But again, the point isn't to expect someone to make a great tool for you, but to have a tool help you make it better for you. Given the verifiability, maybe this /is/ in fact one of the best places for this.
If you want better software, then sure, maybe a coding assistant can help you write it faster, but when it comes to actually doing accounting I would not rely on an LLM in any way shape or form any more than I would do so for law.
I am not an accountant but for many years I worked adjacent to them as a developer. I got a lot of time to ask questions and I was generally curious. Even at the SMB level accountants don't necessarily always have a "ground truth". There are so many ways to bury financial data that it needs almost constant vigilance. Yes, in theory, there is one ground truth (inputs should balance with whats there) but in practice humans are SHOCKINGLY good at committing accounting fraud. GAAP is another thing.