Nobody is replacing excel anywhere.
For good or bad, big companies run on Excel.
At my last job - a large tech company - if it wasn't in Excel, then engineers and HR wouldn't use it. The team had a tool that collected data from various databases for the end user and did some analytics. The code was in Python. The output was an Excel file.
I asked why they didn't use pandas.
"Because the users are just going to take the output and put it in Excel."
It was a very successful tool. No one needed to use it so we had to ensure users liked it. All due to the team lead's wisdom on how big companies operate.
They also wanted us to autogenerated PowerPoint files. We gave up on that. The spec is a mess.
I used to work as a trader for a major investment bank. Everything was excel. I can’t see it staying that way.
You now have that app forever and nothing connects it to Claude other than the comment saying "this isn't just rounding — it's the single source of truth for the shared ledger boundary, not a formatting concern."
While I agree that spreadsheets are likely to be used less by regular folk, the idea that we'll become reliant on claude feels unlikely.
They are shifting to building stuff for agents, not for humans.
Now it'll be harder to do the same for word and harder still for excel, but word is doable, and claude can build one off tools better than excel can, so I definitely think that MS should be wary.
The "I need some place to organize tabular data" use case is so different that I'm not considering it for the rest of this.
But for actual computation, if you throw it in Claude, it'll figure it out. It's much easier to do than to use Excel. Claude itself isn't limited to Excel; it can use pandas and the much, much improved plotting tools compared to Excel. I'm an OpenAI guy myself and used codecs to have it make me ggplot2 graphs, but then I forgot to specify it and it just used straight-up Python — I think it actually generated them as SVG files. As sad as I was about it, they looked better than the ones I had it make using ggplot2.
Regular Excel doesn't even compare there; not only can ggplot2 make many additional types of graphs, but SVG plotting, Python, and pandas can make literally any chart you want, including things like polar-coordinate charts.