HyperWrite

HyperWrite is an AI writing and research assistant that combines document-based writing tools, predictive autocomplete, real-time research with citations, customizable writing personas, and browser-based task automation.

1. Writing and editing: AutoWrite, rewriting tools, document-aware AI chat, feedback features, and hundreds of prebuilt AI tools support drafting, brainstorming, summarizing, researching, and refining content. Custom Personas let users define different writing styles, voices, instructions, and behaviors for recurring work.
2. TypeAhead: HyperWrite’s Chrome extension provides personalized sentence completions directly inside browser text fields. It uses the surrounding text and context from open browser tabs to predict what the user may write next, with suggestions appearing inline and accepted using the Tab key. The feature works across tools such as Gmail, Google Docs, LinkedIn, Notion, and other browser-based applications.
3. Research and browser automation: HyperWrite provides real-time research with source citations, including access to scholarly research for document-based work. Its Personal Assistant can also operate through the Chrome extension to navigate websites, search for information, fill forms, manage email-related tasks, make reservations, and carry out other multi-step browser actions from natural-language instructions.
4. Commercial considerations: Premium costs $19.99 per month and includes 250 AI messages, three Custom Personas, hundreds of AI tools, citations and real-time information, and unlimited TypeAhead. Ultra costs $44.99 per month and increases the allowance to unlimited AI messages and 10 Custom Personas while providing earlier access to experimental writing and Agent features. Annual billing reduces the effective rates to $16 and $29 per month respectively.

HyperWrite is most relevant to individuals who want AI assistance to follow them from long-form documents into everyday browser writing, with TypeAhead, research, personalized writing styles, and optional browser automation available within the same product.