AI Home Price Values, Are They Accurate?

HouseSigma 

Some real estate companies have a home price estimate tool that gives users a value for a property. 

There are complex algorithm's built into the valuation models but ultimately, until these companies actually go inside a home, will it truly be accurate? 

Every home is different, some are old, some are new, some are renovated well and so forth. 

I think these are good tools and people like them, but further improvements in technology will determine how reliable these numbers are.