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Side-by-side comparison · Writing & Translation

DeepL vs Grammarly vs Originality.ai

Everything that matters when choosing between them, in one place: our rating, what each can do, what they cost, and the trade-offs.

DeepL

4.2

From $10.49/mo

Best overall

Grammarly

4.3

From $12/member/mo

Originality.ai

4.1

From $14.95/mo

Comparing 3 tools, the maximum.

At a glance

Pick it if: Businesses that sell, support or write in more than one language, and anyone who regularly translates documents.

Best overall

Pick it if: Anyone who writes emails, documents and messages at work and wants mistakes caught and tone checked before they hit send.

Best value

Pick it if: Publishers, content agencies, SEO teams and businesses that commission written content and want to check it before publishing.

Grammarly scores highest overall, but Originality.ai gives you more for your money. Which one is right comes down to what you value most.

Overview

AttributeDeepLGrammarlyOriginality.ai
In one lineTranslates text, whole documents and live conversations, with natural-sounding results.Fixes grammar, clarity and tone in your writing, wherever you type.Checks content for AI writing, plagiarism and factual errors before you publish it.
Pricing modelFreemiumFreemiumFreemium
Starting price$10.49/mo$12/member/mo$14.95/mo
Free plan Yes Yes Yes
Works with Claude Code Yes No Yes

Rating breakdown

Our scores out of 5. The higher bar in each row is highlighted.

AttributeDeepLGrammarlyOriginality.ai
Overall rating4.24.3Winner4.1
Ease of useHow quickly someone non-technical gets value from it.
5.0
5.0
4.0
FeaturesHow completely it covers its own job, and how well the pieces fit together.
4.5
4.5
4.5
Output qualityHow good the results are before you fix them.
4.0
4.0
3.5
Value for moneyWhat you get for the price, including the free plan.
3.5
3.5
4.0
Speed & reliabilityHow fast it is and how often it falls over.
4.0
4.5
4.5

Feature comparison

A tick means it does this today. A dash means we haven't checked.

AttributeDeepLGrammarlyOriginality.ai
Access & platform
Free plan Yes Yes Yes
Mobile app Yes Yes–
Desktop app Yes Yes–
Browser extension Yes Yes Yes
API access Yes– Yes
Teams & business
Team workspace Yes Yes Yes
Enterprise plan or SSO Yes Yes Yes
Connects to other apps Yes Yes Yes
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
Learns your brand or style Yes Yes–
Works in many languages Yes––
Capabilities score12/ 178/ 177/ 17

Pricing

Plans as listed on each vendor's site when we last checked. Confirm before you buy.

AttributeDeepLGrammarlyOriginality.ai
Plans

Free

Free

Occasional emails and short text.

Free

Free

Basic spelling and grammar checks.

Free

Free

Checking the odd article.

IndividualOur pick

$10.49/mo, or $8.74/mo billed yearly

One person translating most weeks.

ProOur pick

$12/member/mo billed yearly, or about $30 monthly

Anyone who writes a lot at work, alone or in a team.

ProOur pick

$14.95/mo, or $12.95/mo billed yearly

Agencies and site owners checking content every week.

Team

$34.49/user/mo, or $28.74/user/mo billed yearly

Small teams sharing glossaries.

Enterprise

Custom

Large organisations with security needs.

Enterprise

$179/mo, or $136.58/mo billed yearly

Publishers and large content teams.

Business

$68.99/user/mo, or $57.49/user/mo billed yearly

Teams translating all day.

Enterprise

Custom

Large organisations with security reviews.

Which plan to pickStart on Free. If you translate documents or customer emails every week, Individual on a yearly plan is the sweet spot and stops DeepL keeping your text. Move to Team only when several people need the same glossary.Free is enough for typo-catching. If you write for clients or customers every day, Pro on yearly billing is good value; paying monthly costs more than double.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.

Key features

AttributeDeepLGrammarlyOriginality.ai
Standout features
  • Text translation
  • Document translation
  • Glossaries and style rules
  • DeepL Write
  • DeepL Voice
  • Apps and API
  • Live checking everywhere
  • Clarity and rewrites
  • Tone detection
  • AI writing assistant
  • Plagiarism and AI detection
  • Team style guides
  • AI detection
  • Plagiarism checker
  • Fact checker
  • Bulk and site scans
  • Writing replay
  • API

Pros and cons

AttributeDeepLGrammarlyOriginality.ai
Pros
  • More natural translations than Google Translate in most European languages
  • Documents keep their formatting after translation
  • Glossaries keep your terms consistent
  • Paid plans don't store or train on your text
  • A European company, which matters to businesses avoiding US tools
  • Works live in almost every app you type in
  • Free plan is useful for everyday spelling and grammar
  • Tone feedback helps with tricky messages
  • Team style guides keep company writing consistent
  • Yearly Pro price is reasonable for daily use
  • AI, plagiarism, facts and readability in one scan
  • Cheap for the volume on Pro
  • Bulk and whole-site scanning
  • Writing replay gives honest writers a way to prove their work
  • API for content teams
Cons
  • Free plan is small: 50,000 characters and one file a month
  • Weaker on Japanese, Chinese and Korean than a good chat assistant, and newer languages are uneven
  • Many complaints about renewal charges, refused refunds and slow support, so diarise the end of any trial
  • Long-time users report it got slower and less literal in 2026, sometimes rewording the meaning, so legal text still needs a human
  • Glossary and file limits are tight on the cheaper plans
  • Free plan no longer includes sentence rewrites and caps AI prompts at 100 a month
  • Monthly billing costs more than double the yearly rate
  • Accepting every suggestion can strip your own voice
  • Strongest in English only
  • Withdrew its "Expert Review" feature in 2026 after a lawsuit over using authors' identities
  • False positives are a recurring complaint, and independent tests find more than the vendor claims
  • Monthly credits expire if you don't use them
  • API is only on the expensive Enterprise plan
  • A score can sour a client or writer relationship if treated as proof

Who each one is for

AttributeDeepLGrammarlyOriginality.ai
Best for
  • Translating Word, PowerPoint and PDF files with layout kept
  • Customer emails in another language
  • Keeping product terms consistent with glossaries
  • Live translated meetings
  • Polishing English as a second language
  • Proofreading emails and documents as you type
  • Checking tone before a tricky message goes out
  • Writing at work in English as a second language
  • Keeping a team's writing style consistent
  • Plagiarism checks on content
  • Checking freelance and agency content
  • AI and plagiarism checks in one scan
  • Fact-checking articles before they go live
  • Bulk scanning a website
  • Proving a writer wrote their own draft
You'll find it used by
  • Exporters and importers
  • Customer support teams
  • Agencies
  • Translators
  • Legal and HR teams
  • Office staff
  • Sales and support teams
  • Non-native English writers
  • Students
  • Marketers
  • Content agencies
  • Publishers
  • SEO teams
  • Marketing managers
  • Website buyers

Questions people ask

Which is better, DeepL, Grammarly or Originality.ai?

Grammarly scores highest overall in our ratings (DeepL 4.2/5, Grammarly 4.3/5 and Originality.ai 4.1/5). DeepL is best for Translating Word, PowerPoint and PDF files with layout kept and customer emails in another language. Grammarly is best for proofreading emails and documents as you type and checking tone before a tricky message goes out. Originality.ai is best for checking freelance and agency content and AI and plagiarism checks in one scan.

Which is cheaper, DeepL, Grammarly or Originality.ai?

DeepL: There's a free plan, and paid plans start at $10.49/mo. Grammarly: There's a free plan, and paid plans start at $12/member/mo. Originality.ai: There's a free plan, and paid plans start at $14.95/mo.

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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