River

River is an AI desktop, a workspace where users collaborate with AI on whole projects rather than single chats. It combines native documents, notes, spreadsheets, presentations, a browser and a file system with an AI that can use those apps alongside the user, plus team collaboration in a shared workspace. A project can start from source material such as a brand brief, product notes and a plan, and River researches, drafts and refines the related deliverables together, for example a creative direction, a launch page and a content calendar. Connections link the workspace to outside tools. Users can choose among AI models and create images. River is aimed at individuals and teams doing project based knowledge work, and it is backed by Y Combinator. Pricing is in US dollars per person, with monthly subscriptions that can be cancelled anytime. Free costs $0 with a monthly allowance of free AI usage, native documents, sheets, slides and files, and 1 GB of storage. Pay As You Go has no monthly fee and bills AI usage as it is consumed. Basic costs $14 per month with $20 in AI credit, unlimited use of the fastest model, all models, 50 GB of storage and priority support. Standard costs $36 per month with $45 in credit, 500 GB of storage and dedicated support. Premium costs $100 per month with $140 in credit, 2 TB of storage, extended version history and personal support. AI credit resets monthly and does not roll over.