Side-by-side comparison
Compare AI Tools
Pick two to five tools. Every cell comes from a verified record; anything unverified says so. There is no overall winner — the right choice depends on your task, budget and technical needs.
| Criterion | QuillBot | Grammarly | DeepL | Notion AI |
|---|---|---|---|---|
| Provider | QuillBot (Learneo) | Grammarly (Superhuman) | DeepL SE | Notion Labs |
| What it is for | A suite of writing tools for paraphrasing, summarising, grammar checking and AI detection, popular with students. | An AI writing assistant that checks grammar, tone and clarity wherever you type and can rewrite or generate text on request. | An AI translator for text, documents and speech, with a writing assistant and a developer API. | AI built into Notion's workspace for writing, searching, meeting notes and running multi-step agent tasks across your pages. |
| Latest confirmed model | — | — | — | — |
| Main capabilities |
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| Free plan | Yes Paraphraser 125 words per input; Summarizer 1,200 words; AI Detector 1,200 words per scan, 6 scans/day | Yes 100 AI prompts per month | Yes 50,000 characters per user/month; 1 file translation/month (5 MB max); 1 glossary (5 entries per language pair) | Yes 5 MB per upload, 7-day page history, 10 guests |
| Cheapest paid plan | Premium: $19.95/mo $8.33/mo billed annually Annual $99.95 billed yearly; monthly figure from QuillBot FAQ; regional pricing applies | Pro: $30/mo $12/mo billed annually Per member. $30 monthly, $60 quarterly, $144 annually (shown as $12/month). | No monthly list price | Plus: $12/mo $10/mo billed annually Per member |
| API access | No | Limited | Yes · docs (opens in a new tab) | Yes · docs (opens in a new tab) |
| Learning curve | Beginner-friendly | Beginner-friendly | Beginner-friendly | Beginner-friendly |
| Last verified | Oct 19, 2026 | Oct 19, 2026 | Oct 19, 2026 | Oct 19, 2026 |
How to choose
Start from the rows that matter for your job: a free plan and learning curve for casual use; API access, rates and data terms for building products; context window and modalities for long documents or images. Provider claims are labelled as such; we do not rank.
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