HyperWrite vs NovelAI

HyperWrite

• People who write in Chrome and want inline sentence completions
• Drafting email replies and other routine text with AI tools
• Students and researchers who need cited sources while drafting

NovelAI

• Fiction writers who want an AI that continues their own prose
• Interactive fiction and text adventures with persistent lore
• People who want story writing and anime-style image generation in one subscription

HyperWrite

• Premium is capped at 250 AI messages a month; unlimited messages need Ultra at $29 a month billed annually.
• The Free account gets limited monthly credits and only the basic AI model.
• The only browser extension listed is for Chrome, and no desktop or mobile apps are listed.
• Month-to-month billing costs more: $19.99 for Premium and $44.99 for Ultra.

NovelAI

• There is no free plan: the Paper trial's generations are granted once and do not refill.
• Subscriptions renew every 30 days, and the subscription docs list no annual option.
• There are no native apps; it runs in a browser or as an installable progressive web app.
• Forgetting the account email or password means losing access to stories stored on the server, because of the local encryption.

HyperWrite

TypeAhead

The Chrome extension suggests the next words in line as you type on websites; pressing Tab accepts a suggestion. It adapts to your tone the more it is used.

AutoWrite and AI tools

AutoWrite drafts a paragraph on request, and a library of hundreds of single-purpose tools covers jobs such as rewriting text, replying to email and writing speeches.

HyperChat

A chat with the assistant for research, brainstorming and problem solving, with citations and real-time information on paid plans.

Scholar AI

Searches millions of scholarly articles and papers for a topic and returns results backed by citations to peer-reviewed sources.

AI Document Editor

A document editor whose built-in chat can see the current draft, give feedback, find sources and apply changes to the text itself.

Custom personas and tools

Personas make the AI write in your own style, 3 on Premium and 10 on Ultra, and custom tools can be built for a recurring workflow.

NovelAI

Story editor

Write in the editor and send to have the AI continue the text. Every generation and edit is kept in a branching history, and a retry produces a new output.

Lorebook

Entries for characters, locations and factions are inserted into the AI's context when their activation keys appear in the story. Lorebooks can be imported and exported.

Text Adventure mode

Actions typed with a > symbol tell the AI what a character does, and it writes the narrative response. Pre-made scenarios are available to start from.

Text to speech

Streamed voices read inputs and AI outputs aloud for subscribers. A local option uses the browser's own speech synthesis instead.

Image generation

NovelAI Diffusion models produce anime-style images from prompts and tags, with inpainting, a canvas and Director Tools for edits. Images are paid for in Anlas.

Encrypted story storage

Stories saved to NovelAI's servers are encrypted in the browser first. Text sent for a generation is transmitted unencrypted over HTTPS and, per the FAQ, not stored or logged.

HyperWrite

• Free$0

  A limited number of monthly credits on HyperWrite's basic AI.

• Premium$16

  per month, billed annually ($192); $19.99 billed monthly

  250 AI messages a month, citations and real-time information, 3 custom personas, the library of AI tools and unlimited TypeAheads.

• Ultra$29

  per month, billed annually ($348); $44.99 billed monthly

  Unlimited AI messages, 10 custom personas, unlimited TypeAheads and first access to experimental writing and agent features.

NovelAI

• Tablet$10

  per month (renews every 30 days)

  Unlimited text and text-to-speech generation, plus 1,000 Anlas a month to spend on image generation.

• Scroll$15

  per month (renews every 30 days)

  Everything in Tablet with a larger context size, so the AI takes more of the story into account.

• Opus$25

  per month (renews every 30 days)

  Largest context (28,672 tokens), the Xialong model, 10,000 Anlas a month and Anlas-free standard images within a usage limit.

HyperWrite

• Annual discount

  Lower monthly rate with annual billing

  The pricing page labels annual billing as saving 20%. Premium drops from $19.99 to $16 a month ($192 a year) and Ultra from $44.99 to $29 ($348 a year).

NovelAI

No public discounts listed.