Side-by-side comparison · Writing & Translation
Hemingway Editor vs Originality.ai vs Undetectable AI
Everything that matters when choosing between them, in one place: our rating, what each can do, what they cost, and the trade-offs.
Comparing 3 tools, the maximum.
At a glance
Pick it if: Business owners, marketers and bloggers who want their website copy, emails and posts easier to read.
Pick it if: Publishers, content agencies, SEO teams and businesses that commission written content and want to check it before publishing.
Pick it if: Marketers and writers who use AI for first drafts and want them to sound less robotic.
Overview
| Attribute | Hemingway Editor | Originality.ai | Undetectable AI |
|---|---|---|---|
| In one line | Highlights hard-to-read sentences so your writing is clear, and rewrites them with AI. | Checks content for AI writing, plagiarism and factual errors before you publish it. | Rewrites AI-written text so it reads more human and is less likely to get flagged. |
| Pricing model | Freemium | Freemium | Freemium |
| Starting price | $0 | $14.95/mo | $0 |
| Free plan | Yes | Yes | Yes |
| Works with Claude Code | No | Yes | Yes |
Rating breakdown
Our scores out of 5. The higher bar in each row is highlighted.
| Attribute | Hemingway Editor | Originality.ai | Undetectable AI |
|---|---|---|---|
| Overall rating | 4.3Winner | 4.1 | 3.6 |
| Ease of useHow quickly someone non-technical gets value from it. | 5.0 | 4.0 | 4.0 |
| FeaturesHow completely it covers its own job, and how well the pieces fit together. | 4.0 | 4.5 | 3.5 |
| Output qualityHow good the results are before you fix them. | 4.0 | 3.5 | 3.0 |
| Value for moneyWhat you get for the price, including the free plan. | 4.0 | 4.0 | 3.5 |
| Speed & reliabilityHow fast it is and how often it falls over. | 4.5 | 4.5 | 4.0 |
Feature comparison
A tick means it does this today. A dash means we haven't checked.
| Attribute | Hemingway Editor | Originality.ai | Undetectable AI |
|---|---|---|---|
| Access & platform | |||
| Free plan | Yes | Yes | Yes |
| Mobile app | No | – | No |
| Desktop app | – | – | – |
| Browser extension | No | Yes | Yes |
| API access | No | Yes | Yes |
| Teams & business | |||
| Team workspace | Yes | Yes | No |
| Enterprise plan or SSO | Yes | Yes | – |
| Connects to other apps | No | Yes | No |
| Open source or self-hosted | No | No | No |
| AI abilities | |||
| Works with your files | – | Yes | Yes |
| Understands images | – | – | Yes |
| Makes images | No | No | No |
| Makes video | No | No | No |
| Writes code | No | No | No |
| Runs agents or automations | No | No | No |
| Learns your brand or style | Yes | – | – |
| Works in many languages | – | – | Yes |
| Capabilities score | 4/ 17 | 7/ 17 | 6/ 17 |
Pricing
Plans as listed on each vendor's site when we last checked. Confirm before you buy.
| Attribute | Hemingway Editor | Originality.ai | Undetectable AI |
|---|---|---|---|
| Plans | Free $0 Checking how readable your writing is. | Free Free Checking the odd article. | Free $0 Testing one short piece. |
Individual 5K $100/yr ($8.33/mo) Occasional AI help. | ProOur pick $14.95/mo, or $12.95/mo billed yearly Agencies and site owners checking content every week. | 10K words $9.99/mo, or $5/mo billed yearly ($60) Occasional use. | |
Individual 10KOur pick $150/yr ($12.50/mo) Writers editing most days. | Enterprise $179/mo, or $136.58/mo billed yearly Publishers and large content teams. | 20K wordsOur pick $19/mo, or $9.50/mo billed yearly ($114) Regular blog content. | |
Team 10K $150/user/yr ($12.50/user/mo) Teams of up to 50. | Larger plans From $31/mo, or $15.75/mo billed yearly Agencies and high volume. | ||
Enterprise Custom Large organisations. | |||
| Which plan to pick | Use the free editor first. If you want the fixes done for you, try Editor Plus free for two weeks. Individual 10K is the best value if you write most days. Monthly billing is available but costs more than yearly. | Pro is enough for most agencies and site owners. An AI and plagiarism check together uses two credits per 100 words, so budget about 100,000 words of checked content a month. Go Enterprise only if you need the API or very high volume. | Test the free 250 words on your own writing first. If the output works for you, a small yearly plan is cheap. Word credits reset monthly, so don't buy more than you use. |
Key features
| Attribute | Hemingway Editor | Originality.ai | Undetectable AI |
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Pros and cons
| Attribute | Hemingway Editor | Originality.ai | Undetectable AI |
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Who each one is for
| Attribute | Hemingway Editor | Originality.ai | Undetectable AI |
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Questions people ask
Which is better, Hemingway Editor, Originality.ai or Undetectable AI?
Hemingway Editor scores highest overall in our ratings (Hemingway Editor 4.3/5, Originality.ai 4.1/5 and Undetectable AI 3.6/5). Hemingway Editor is best for making website and blog copy easier to read and checking a reading grade level. Originality.ai is best for checking freelance and agency content and AI and plagiarism checks in one scan. Undetectable AI is best for Making AI drafts sound less robotic and seeing how detectors might score your text.
Which is cheaper, Hemingway Editor, Originality.ai or Undetectable AI?
Hemingway Editor: There's a free plan, and paid plans start at $0. Originality.ai: There's a free plan, and paid plans start at $14.95/mo. Undetectable AI: There's a free plan, and paid plans start at $0.
Which is easier to use, Hemingway Editor, Originality.ai or Undetectable AI?
Hemingway Editor rates highest for ease of use in our scores. Business owners, marketers and bloggers who want their website copy, emails and posts easier to read.
How we compare
Ratings are our own, from using each tool, across ease of use, features, output quality, value for money, speed & reliability.
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