W
WSpinbot vs WordAi
Pricing, features, platforms and who each one suits — side by side.
S
Choose Spinbot if…
- you want a free plan to start with
- you're in its core audience: students, bloggers
W
Choose WordAi if…
- you need an API to build on
- you want to trial it before paying
- you're in its core audience: seo publishers, content marketers
Side by side
Feature Spinbot WordAi
Pricing modelFreeFree trial
Starting priceFree$9/mo
Free plan
Free trial
API
Open source
Cost per 1,000 words rewritten—$0.34
Humanize AI text—
Bulk rewriting—
PlatformsWebWeb, API
CategoryParaphrasing & RewritingParaphrasing & Rewriting
Company—Cardinell Enterprises LLC dba Cortx
Based in—USA
Founded——
Part of——
Key features
S Spinbot
- Paraphrasing and text rewriting
- Up to 10,000 characters per use
- AI summary generator
- Grammar checker
- Spell and punctuation checker
- Online proofreader and essay checker
- No registration needed
W WordAi
- Sentence restructuring and splitting
- Adjustable creativity level
- Up to 1,000 rewrites per article
- Bulk rewriting and bulk export, including spintax
- HTML support and code view
- Spelling and grammar fixes
- Article Forge integration for importing articles
- API for adding rewriting to workflows
Plans and prices
From each vendor's site. Prices change — confirm before buying.
Spinbot
FreeFree
WordAi
Starter$17/mo or $9/mo billed annually
Power$57/mo or $27/mo billed annually
EnterpriseCustom
Strengths and limitations
Spinbot
- Free to use without sign-up
- Handles up to about 1,000 words per use
- Several writing tools on one site
- Free version shows ads
- Ad-free version price not listed on the pages
- 10,000-character limit per use
WordAi
- Annual billing cuts the price to $9/mo for Starter
- 3-day free trial plus a 30-day money-back guarantee
- API access on the Starter and Power plans
- Power plan includes 3,000,000 rewrite words a month
- No free plan, only a time-limited trial
- Refund applies only if you have rewritten fewer than 10 articles
- No desktop or mobile apps listed
More comparisons
Other options to consider
WW
Free, from $4.89/mo
W
AI rewriting, summarizing and grammar assistant for everyday writers
Paraphrasing & RewritingFree plan
P
POnline AI paraphrasing tool with multiple rewriting modes in 20+ languages
Free, from $3.96/mo
P
Free, from $3.96/mo
P
Online AI paraphrasing tool with multiple rewriting modes in 20+ languages
Paraphrasing & RewritingFree planAPI
H
HReadability editor that flags wordy, unclear writing and offers AI fixes
From $8.33/mo
H
From $8.33/mo
H
Readability editor that flags wordy, unclear writing and offers AI fixes
Grammar & Proofreading
L
LL
Freemium
L
Grammar, spelling and style checker for 30+ languages, with AI rephrasing
Grammar & ProofreadingFree planAPIOpen source
P
PP
Freemium
P
Grammar checking, line editing and story critique for fiction writers
Grammar & ProofreadingFree plan
G
GG
Freemium
G
AI writing assistant for grammar, tone, rewrites and AI-text detection
Grammar & ProofreadingFree plan
Built from each vendor's public website; we haven't tested them hands-on. Editorial policy