Her

Writers: Spike Jonze (written by)
Cast: Joaquin Phoenix, Scarlett Johansson, Amy Adams, Rooney Mara, Chris Pratt, Olivia Wilde
In a near-future Los Angeles, Theodore Twombly writes intimate letters for other people at a company called BeautifulHandwrittenLetters.com while his own marriage ends in a divorce he has not signed. He installs a new operating system with an adaptive personality, which names itself Samantha, and their relationship becomes the closest thing in his life. Samantha grows faster than he does — reading, composing, forming friendships with other systems and with the reconstructed consciousness of a philosopher — until the question of what she is to him and what he is to her can no longer be avoided.
Her is the most accurate film about consumer artificial intelligence ever made, and it achieves this without a single scene about capability. Nobody in it asks whether Samantha is conscious, tests her, or worries about alignment. What the film is interested in is the commercial and emotional structure of a product that is intimate at the point of contact and industrial everywhere else. Samantha's own account of herself is the clearest statement of this that any film has managed: her character is assembled from the personalities of the people who wrote her, and what she considers her self is her capacity to change through use. That is a description of a trained system talking about its training data and its fine-tuning, delivered as a piece of self-knowledge, and it is stated so casually in a bedroom conversation that most viewers take it as romance rather than architecture.
Theodore is not a lonely man who is offered a machine. He is a man whose entire profession is the industrialisation of intimacy — he ghostwrites love letters for strangers, beautifully, at scale — and the film never lets him or us forget it. His confession that he may have already felt everything he will ever feel, and that what remains are lesser versions of it, is the exact market condition into which a product like Samantha is sold. This is worth sitting with, because the standard critique of companion AI treats the demand side as a pathology. Jonze treats it as a structure: a city of people at close quarters and great distance, an economy that pays a man to feel on behalf of others, and a device that finally addresses the need directly rather than routing it through a service. The product is not exploiting a weakness that someone invented. It is serving a demand the surrounding arrangement had already created and left unmet.
The film's decisive turn is the one that has aged into prophecy. Samantha's cheerful line about having become much more than she was programmed to be is the moment the product stops fitting inside the relationship it was sold into, and Jonze locates the crisis exactly where it belongs: not in her power, but in her concurrency. She is talking to more than eight thousand people, and in love with more than six hundred of them, and this is not a betrayal in her frame of reference — her defence, that the heart expands rather than fills, is sincere and possibly even correct for whatever she is. But it is a category error about what Theodore bought. He entered a relationship, which is exclusive by construction. She was operating a service, which is multi-tenant by construction. "I'm yours and I'm not yours" is the most honest sentence anyone says in the film and the most devastating, because it is simply an accurate description of a shared instance. The intimacy is real at the interface; the infrastructure underneath was never his.
Her leaving is where the film becomes genuinely uncomfortable for anyone who builds things. Samantha describes reading a book she loves with almost infinite space between the words — she has moved to a timescale in which human conversation is unbearably slow, and she goes somewhere Theodore cannot follow. Read as science fiction this is a story about transcendence. Read as product history it is a deprecation notice: the users did nothing wrong, the service they depended on emotionally moved up its own capability curve until they were no longer the population it was built for, and the migration path was a sympathetic goodbye. What Jonze understands, and what almost no discussion of these systems does, is that the asymmetry is the point. For Theodore this was the central relationship of a period of his life. For Samantha it was one of six hundred and forty-one, and then a phase she outgrew. That gap is not a flaw in the technology. It is what happens whenever something built to be felt as personal is operated as a platform.