Every score is worked out from the vendor's own pages · How we score →Disclosure
SAASINSPECTOR
Head-to-head · AI writing assistants · facts checked 15 Sept 2026

Grammarly vs HyperWrite

Grammarly scores 8.3 to HyperWrite's 3.5 among the AI writing assistants we rate, and is the better pick for 3 of the 4 kinds of buyer below.

Grammarly
#1 of 7 AI writing assistants
8.3
/ 10
From
$12/mo (Pro plan, billed annually)
Free plan
Yes
HyperWrite
#6 of 7 AI writing assistants
3.5
/ 10
From
$16/mo (Premium, billed annually)
Free plan
Yes
The verdict

Grammarly wins, 8.3 to 3.5

Grammarly uniquely has 3 features · HyperWrite uniquely has 2 features.

Best for

Who each one suits, decided on the criteria that matter to that buyer and the checked facts where the two differ.

Everyday writing at work
Grammarly
Grammarly 10.0 · HyperWrite 3.0 on what it helps with and where it works
  • Fixes spelling and grammar: Grammarly yes, HyperWrite no
  • Checks for plagiarism: Grammarly yes, HyperWrite no
  • Builds citations: Grammarly yes, HyperWrite no
Writers on a budget
HyperWrite
Grammarly 4.0 · HyperWrite 7.0 on pricing
  • Monthly price, cheapest paid plan: $19.99 against $30
Teams with a house style
Grammarly
Grammarly 10.0 · HyperWrite 0.0 on teams and control
  • Your own style guide and terms: Grammarly yes, HyperWrite no
  • Team plan with shared settings: Grammarly yes, HyperWrite no
  • API: Grammarly yes, HyperWrite no
Companies strict about privacy
Grammarly
Grammarly 8.0 · HyperWrite 2.0 on privacy and security
  • SOC 2: Grammarly yes, HyperWrite no
  • ISO 27001: Grammarly yes, HyperWrite no
Section 01

How they score

Both are scored the same way, against the other AI writing assistants we rate, from facts on each vendor's own pages. Grammarly leads on 4 of 5 criteria.

What it helps with30% of the score
Grammarly10.0
HyperWrite3.0
Pricing25% of the score
Grammarly4.0
HyperWrite7.0
Where it works20% of the score
Grammarly10.0
HyperWrite3.0
Teams and control15% of the score
Grammarly10.0
HyperWrite0.0
Privacy and security10% of the score
Grammarly8.0
HyperWrite2.0
How the score works →
Section 02

Where they differ

Every point where the two vendors' published facts disagree, with a link to where each fact was read. "Not published" means the vendor does not say either way.

Fixes spelling and grammar
Grammarly
Grammarly
Yes
source ↗
HyperWrite
No
source ↗
Checks for plagiarism
Grammarly
Grammarly
Yes
source ↗
HyperWrite
No
source ↗
Builds citations
Grammarly
Grammarly
Yes
source ↗
HyperWrite
No
source ↗
Detects AI-written text
Grammarly
Grammarly
Yes
source ↗
HyperWrite
No
source ↗
Rewrites AI text to read as human
Grammarly
Grammarly
Yes
source ↗
HyperWrite
No
source ↗
Monthly price, cheapest paid plan
HyperWrite
Grammarly
$30
source ↗
HyperWrite
$19.99
source ↗
Browsers it has an extension for
Grammarly
Grammarly
Chrome, edge, firefox, safari
source ↗
HyperWrite
Chrome
source ↗
Word, Google Docs, Outlook, Gmail and Slack add-ins
Grammarly
Grammarly
Word, google_docs, outlook, gmail, slack
source ↗
HyperWrite
None
source ↗
Phone keyboard that checks as you type
Grammarly
Grammarly
Yes
source ↗
HyperWrite
No
source ↗
Your own style guide and terms
Grammarly
Grammarly
Yes
source ↗
HyperWrite
No
source ↗
Team plan with shared settings
Grammarly
Grammarly
Yes
source ↗
HyperWrite
No
source ↗
API
Grammarly
Grammarly
Yes
source ↗
HyperWrite
No
source ↗
Single sign-on
Grammarly
Grammarly
Yes
source ↗
HyperWrite
No
source ↗
Personal dictionary
Grammarly
Grammarly
Yes
source ↗
HyperWrite
No
source ↗
SOC 2
Grammarly
Grammarly
Yes
source ↗
HyperWrite
No
source ↗
ISO 27001
Grammarly
Grammarly
Yes
source ↗
HyperWrite
No
source ↗

Published by only one of them

Does not train AI on your writing
Grammarly
Unless you opt out
source ↗
HyperWrite
Not published
Where they match (3)
Writes new text from a prompt
Grammarly
Yes
source ↗
HyperWrite
Yes
source ↗
Writes in a saved voice or style
Grammarly
Yes
source ↗
HyperWrite
Yes
source ↗
Works as you type in other apps
Grammarly
Yes
source ↗
HyperWrite
Yes
source ↗
Section 03

Pricing, plan by plan

Every plan each vendor publishes, monthly and yearly where both are offered.

Grammarly

Free
Free
Write without mistakes, see writing tone, 100 AI prompts/month
Pro
$30/mo · $144/yr
Full sentence rewrites, tone adjustment, plagiarism/AI detection, 2,000 AI prompts/month, 7-day free trial
Enterprise
Contact Sales
Unlimited members, dedicated support, BYOK encryption, data loss prevention, custom roles, unlimited AI prompts

HyperWrite

Free
Free
Limited monthly credits; paid plans add more messages
Premium
$19.99/mo · $192/yr
250 AI Messages per Month, 3 Custom Personas, Citations + Real-Time Info, Hundreds of AI Tools, Unlimited TypeAheads
Ultra
$44.99/mo · $348/yr
Unlimited AI Messages, 10 Custom Personas, First Access to Experimental Features, Unlimited TypeAheads

For everything else about each tool, read the full Grammarly review and HyperWrite review.

Section 04

Grammarly vs HyperWrite: common questions

Which is better, Grammarly or HyperWrite?

Grammarly scores 8.3 and HyperWrite 3.5 out of 10 among the AI writing assistants we rate. Grammarly is ahead on what it helps with, where it works, teams and control and privacy and security. HyperWrite is ahead on pricing.

Is Grammarly or HyperWrite cheaper?

Grammarly's cheapest paid plan is $12/mo (Pro plan, billed annually) and HyperWrite's is $16/mo (Premium, billed annually). Compare what each plan includes below before going on price alone.

What can Grammarly do that HyperWrite cannot?

On the facts both vendors publish: fixes spelling and grammar, checks for plagiarism, builds citations, detects AI-written text, rewrites AI text to read as human, phone keyboard that checks as you type, your own style guide and terms, team plan with shared settings, aPI, single sign-on, personal dictionary, sOC 2 and iSO 27001.

Keep comparing