I may sound unthankful here, but it just very strongly smells of Antropic amping up their PR campaigning lately, even the headline on the post reads offputting.
Plus, while 6 months is better than 1 month, why isn't it a recurring deal (or token-limited), which renews after check-ins (like educational discounts do). This sounds like an Apple TV+ offer you get for every Apple product you buy. A hook, more than a treat.
In this case, I guess it's just a slimy approach to building a self-selected lead list of people you can hard-hit with upsells after the 6 months.
Thank you for everything you ship*
*there's a 6 months limit we have on gratitute.
I'm guessing that this is an initial trial and they're intending to extend it further; 6 months is a reasonable trial period given the very rough metric for deciding who qualifies.