There are flourishes of Fellini's 8 1/2, Woody Allen, Existential philosophy, Philip K. Dick and much more but the script is Kaufman, any influences are only influences. The script is a tough, original, engaging, horrific, endearing work. Typical of Kaufman the script is also quirky, humorous, haunting, intense and charming all at once. The second act is far too long and the third act needs some work (however I have only read the first draft).
Whilst I have only read about Jacques Rivette's Out 1, there is something in this film which made me think of it. I could be completely wrong but I guess I'll have to see both films before I commit to that. Also the script is likely to have considerably changed from the draft that I have read. The script is a difficult piece for a first time director and I hope that Kaufman pulls it off. Hopefully more news on this project as it develops.
Poster:
