HyperWrite vs Wordtune

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors.

The short answer

Cheaper paid plan: Wordtune — $4.89/mo vs $16/mo for HyperWrite
Free plan: Both have one
Best fit: HyperWrite: People who draft mostly in Gmail or Google Docs and want suggestions in place · Wordtune: Non-native English writers who need a sentence to read naturally, not be rewritten wholesale
Trust score: About even — HyperWrite 91, Wordtune 91
Status: Both up at our last check (Sep 6, 2026)

From our own records as of each tool's last check. Anything we have not confirmed is left out rather than guessed. How we verify

HyperWriteWriting assistant with autocomplete in the browser, cited research and saved custom tools

WordtuneSentence rewriter that keeps the meaning you intended

Side by side

Fact	HyperWrite	Wordtune
Category	AI Writing Assistants	Paraphrasing & Rewriting
Pricing model	Freemium	Freemium
Starts at	$16/mo	$4.89/mo
Trust score	91 / 100	91 / 100
Platforms	Web, Chrome extension	Web, Chrome extension
Company	OthersideAI, Inc.	AI21 Labs
Launched	—	2020
Last verified	Sep 6, 2026	Sep 6, 2026

What our research says

HyperWrite

HyperWrite's useful part is the extension: autocomplete that follows you into Gmail and Google Docs, and a shelf of saved prompt tools you can trigger without opening a chat window. The web app is a competent but ordinary chat-plus-tools workspace in a market where Claude, ChatGPT and Gemini all now write and cite, so the question is whether the 250-message Premium quota and the in-browser convenience are worth $16 to $20 a month to you. The agent that once headlined the product survives only as an 'early access' line on the Ultra plan.

Pros

Chrome extension brings autocomplete and tools into Gmail, Google Docs and most text fields
Research mode returns citations from web and scholarly sources rather than unsourced prose
Custom tools and personas let you package a repeatable prompt once and reuse it
Annual billing cuts Premium to $16 a month, with a free tier to try first

Cons

250 AI messages a month on Premium is low for anyone using it as a daily chat assistant
The free plan's limits are not stated beyond 'limited monthly credits'
The browsing agent is no longer a shipped feature, only early access on Ultra
No legal entity, address or country on the site beyond the OthersideAI brand name

Wordtune

Wordtune still does the one thing it was built for better than the general assistants do, but its owner is in visible trouble and the product has not shipped news in two years. Cheap and useful today, risky as a dependency.

Pros

Rewrites preserve intent instead of paraphrasing into something else, which is the whole point
In-place browser extension avoids the copy-paste round trip
Cheapest tier is under $5 a month on annual billing

Cons

Parent AI21 Labs is in financial distress: a $300M round never closed, acquisition talks with NVIDIA and then Nebius, and reported layoffs above 60%
The product blog has not been updated since June 2024 and the site footer still reads 2025
AI21's own site no longer mentions Wordtune anywhere, suggesting it is no longer a strategic product
Free tier's 10 rewrites a day is exhausted in a single editing session

Which one fits

Choose HyperWrite if you need

People who draft mostly in Gmail or Google Docs and want suggestions in place
Students and researchers who want cited sources attached to drafts
Anyone who repeats the same prompt jobs and wants them saved as one-click tools

Choose Wordtune if you need

Non-native English writers who need a sentence to read naturally, not be rewritten wholesale
Anyone editing inside Gmail, Docs or LinkedIn who wants suggestions in place
Light users, since the free tier is genuinely usable for occasional rewriting