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DeepL vs Grammarly
A plain-English comparison to help you choose between them.
For a single business-writing seat the split is where the help arrives. Pick DeepL when the same subscription should pair sentence-level rewriting in Write with benchmark translation, so the master copy and its market versions come from one tool; pick Grammarly for a constant editorial pass everywhere you type, from browser to Office, with real-time checking and a steady register suited to teams and non-native writers. Teams publishing across languages lean DeepL; English-only teams lean Grammarly.
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Side by side
- Summary
DeepL is an AI language platform built around translation long treated as the quality benchmark. It translates text and entire documents whole across dozens of languages, and DeepL Write improves the writing itself: grammar, phrasing and tone for business text.
DeepL Voice puts live translated captions into Teams, Zoom and Google Meet across more than forty languages, handles face-to-face conversations on-device, with an API for contact centres. DeepL Agent executes multi-step business tasks under admin controls and human-in-the-loop approvals.
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A free tier with monthly caps covers everyday translation; paid tiers lift the limits and keep submitted text out of model training. It suits teams that cross languages daily, from marketing localisation to cross-border operations.
- Best for
- Benchmark-quality translation of text and full documents
- Live translated captions in Teams, Zoom and Google Meet
- Improving business writing with DeepL Write's tone and phrasing controls
- Paid tiers that keep submitted text out of model training
- Teams localising content and correspondence across markets daily
- Cost
- Freemium (Free tier + paid plans)
- Ease
- Openness
- Hosted service
- Data
- Free-tier translations may be retained to improve the service, so confidential contracts, HR material and customer data belong on paid tiers, where DeepL commits to not training on submitted text; read the privacy policy and the Pro data-security terms before anything sensitive goes in. DeepL Voice carries ISO 27001 and SOC 2 Type 2 attestations with a GDPR and HIPAA posture, though regulated teams should verify those claims against current trust documentation rather than cached summaries. Machine translation of legally or medically significant text still needs review by a qualified human translator or subject-matter expert before it carries weight.
- Summary
Grammarly is the writing assistant that lives where you type: browser, desktop, mobile, Google Docs and Microsoft Office. It catches errors in real time, rewrites for clarity and tone, and now adds AI drafting plus agents for humanising machine text and detecting it.
Its company is now Superhuman, uniting Grammarly with the Coda workspace and the Mail inbox under one suite, threaded together by a proactive assistant. The Grammarly product itself continues under its own name as the writing layer, on free and paid tiers.
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Its enduring value is the safety net: a constant editorial pass over everything a person or a team writes, everywhere they write it.
- Best for
- Real-time grammar, clarity and tone checking across nearly every app
- One-click rewrites that tighten without changing meaning
- A steady editorial register for teams and non-native writers
- AI drafting where you already type, not in a separate app
- Checking whether text reads as human or machine-made
- Cost
- Freemium (Free tier + paid plans)
- Ease
- Openness
- Hosted service
- Data
- For confidential writing, check enterprise/DPA terms before pasting sensitive content; consumer tiers process text on Grammarly/Superhuman servers. Human-review AI rewrites for accuracy and voice. Note "Superhuman" is now the parent company: verify which product/tier you are buying, as stale listings cite retired "Starter" pricing.
Pricing
- DeepL
Free·$8.74$28.74/user·$57.49/user·Custom
Prices as of August 2026.
- Free version
- Free
- Individual
- $8.74per monthbilled annually; $10.49 per month if billed monthly
- Team
- $28.74per user, per monthbilled annually; $34.49 per user per month if billed monthly
- Business
- $57.49per user, per monthbilled annually; $68.99 per user per month if billed monthly
- Enterprise
- Price on applicationno list price published
- Grammarly
Free$12/user·Custom
Prices as of August 2026.
- Free
- Free
- Pro
- $12per user, per monthbilled annually; $30 per user per month if billed monthly
- Enterprise
- Price on applicationno list price published
By area
Where each one pulls ahead, area by area.
| Area | DeepL | Grammarly |
|---|---|---|
| By job | ||
| Marketing | DeepL pairs sentence-level rewriting in Write with benchmark translation so the master copy and its market versions come from one tool | Grammarly protects the register rather than inventing the voice, holding campaign copy to one tone setting across email, documents and content tools so many hands stop drifting apart |
| By task | ||
| Writing & research | DeepL rewrites at sentence level in Write with tone adaptation and puts benchmark translation in the same subscription | Grammarly's suggestions teach as they fix, which is what makes an always-on editorial pass worth more than the corrections themselves, and it works without changing where you type |
Common questions
Which suits a non-native English writer better?
Grammarly's case is the always-on safety net: real-time checking across nearly every app, holding a steady editorial register across the browser, desktop apps and Office or Google documents. DeepL's case is the pairing: Write adapts tone and phrasing at sentence level, and the same subscription carries benchmark translation for drafting in your first language. If your English is written directly, Grammarly coaches it; if it starts in another language, DeepL covers both steps.
Do both tools have free tiers to start on?
Yes, both run freemium models. Grammarly continues on free and paid tiers as the writing layer of the wider Superhuman suite, while DeepL's free tier covers everyday translation with monthly caps. The tier that matters is paid on DeepL, which keeps submitted text out of model training; on Grammarly, organisations with strict data policies should review where its checking runs.
Can either tool draft documents from scratch?
Grammarly now adds AI drafting where you already type, though it remains an editor first: polishing what exists is the enduring value, and long-form generation and structural thinking still belong to the general assistants. DeepL Write only improves existing business text; it does not draft from a brief. If original drafting is the real need, neither is the right single seat.
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Tool facts last checked August 2026