Bulk Keyword Diffculty Checker Tool ?

Do you guyz have any suggestion about keyword analysis tool ( difficulty) for bulk puporse like 100 k keyword.

For such a big volume i guess you need a custom software, you can use moz api to analyze like 10 domains at once but it's not a big deal. For 100k keywords you will have to get 100k google results + 100k moz requests and after that to establish how domains are standing.

100k?? :O I'm afraid if any company can deal a big volume like that at once.