The final episode of the fifth season of Stranger Things arrived last month after a long period of anticipation. Although fans waited, theorized and looked forward to it for years, many were disappointed by the way things went on in the last episode, and the conclusion the Duffer Brothers left the show with.Some of the issues fans raised were about Will Byers' coming out and how the show did not properly address his feelings for Mike Wheeler, and how Mike and Eleven's last moments felt bleak. Many also talked about how the Duffers kept adding more and more details that apparently happened off screen, all of which led to fans theorizing there's a secret last episode that the show will release shortly.On the other hand, Netflix has released a documentary called One Last Adventure: The Making of Stranger Things 5, that goes behind the scenes of the all the scenes that were included in the fifth season and although it gives fans an intimate look at the show, one particular scene stood out, where the writers seem to have been using ChatGPT.In a single frame, eagle eyed fans noticed multiple OpenAI tabs being opened on a laptop screen where the script was being written. Fans immediately raised their suspicions, calling out the creators, with many noting that the usage of AI was exactly why the ending was disappointing.There have not been any claims or confirmations about Stranger Things using AI from anyone who worked on the show. Netflix or the Duffer Brothers have yet to comment on this.What happened in the finale of Stranger Things Season 5?The final episode of Stranger Things throws everyone straight into the final battle. Eleven, Kali, and Max face Henry Creel inside his mind, while Hopper and Murray prepare to destroy the Upside Down for good. The rest of the group enters the Abyss to rescue the kidnapped kids, which leads to the show’s most chaotic and collaborative fight yet. Every character plays a role, very Dungeons & Dragons coded, very full circle.In the end, Vecna faces defeat at the hands of Joyce, who decapitates him, telling him he messed with the wrong family. The Upside Down is destroyed using a bomb, as it collapses the bridge between worlds. But it doesn't go alone. Eleven goes with it, as she sacrifices herself so no one else can use her blood for any evil experiments again. She shares one last heartfelt goodbye with Mike, before being swallowed by the destruction.Everyone else finds their version of peace. Max and Lucas end up together. Dustin becomes valedictorian and does what Eddie Munson hopes to do during graduation and later goes to university but stays close to Steve. Will finds acceptance in a bigger city. Mike becomes a writer, who writes about the group too Nancy drops out of college and works at the Boston Herald. Jonathan studies filmmaking and works on a film about cannibalism. Steve stays in Hawkins coaching kids of little league. Robin goes to college and Hopper and Joyce finally get engaged at Enzo's and plan a life in Montauk.Stranger Things is available to stream on Netflix.