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HyperWrite

Free tier

AI writing assistant with web search, citations, and hundreds of writing tools

Free tier available·All audiences·Powered by OthersideAI
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Key strengths

Predictive TypeAhead writing suggestions directly in the browser via Chrome ExtensionReal-time academic research with citations via Scholar AI and millions of scholarly articlesHundreds of pre-built AI writing tools covering virtually every writing use caseCustom AI Personas that adapt to your personal writing styleUnified AI writing workspace combining document editor, chat, and research
Free tier + paid plans · from $16 USD/mo
United States
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Technical Setup & Integration

Chrome Extension

Install the HyperWrite Chrome Extension from the Chrome Web Store. Once authenticated, it injects a TypeAhead suggestion layer into supported web inputs (Gmail, Google Docs, LinkedIn, etc.). Suggestions are context-aware and rendered inline — users accept via Tab or dismiss by continuing to type.

Custom Personas

Available on Premium (3 personas) and Ultra (10 personas) plans. Personas allow you to define the AI's tone, style, and behavioral constraints — useful for maintaining brand voice or mimicking a specific author's style across all tool outputs.

Scholar AI / Real-Time Research

HyperWrite's Scholar AI queries a live index of millions of scholarly papers and surfaces peer-reviewed citations directly in the editor. This is available on paid tiers and is powered by real-time retrieval rather than a static training corpus, ensuring current and accurate references.

Pricing Tiers (for integrating into team workflows)

PlanPriceAI MessagesPersonas
Free$0Limited—
Premium$16/mo (annual)250/mo3
Ultra$29/mo (annual)Unlimited10

Note: No public REST API is currently documented. HyperWrite is primarily accessed via the web app and Chrome Extension.