HyperWrite is built on top of large language models and augments them with real-time web search and integration with millions of scholarly articles, enabling citation-backed content generation. The platform exposes its capabilities through a web-based document editor, a Chrome Extension with TypeAhead (context-aware inline completions), and a modular tool library of hundreds of pre-configured AI workflows. Custom Personas allow users to fine-tune the model's voice and behavior per use case. The product is developed by OthersideAI and operates as a SaaS platform with tiered subscription access; no public-facing API is currently advertised.