Productivity comparison
Grammarly vs Notion Ai
Business writing, grammar, tone, and communication quality across apps · Knowledge-base writing, summaries, and team docs
| Decision point | Grammarly | Notion AI |
|---|---|---|
| Best for | Business writing, grammar, tone, and communication quality across apps | Knowledge-base writing, summaries, and team docs |
| Category | Productivity | Productivity |
| Price | Free + paid plans | Paid add-on / included in some plans |
| AIToolsEssentials score | 4.4/5 | 4.3/5 |
Evidence status
Free: $0/month and 100 generative-AI prompts per month. Pro: displayed at $12 USD and includes 2,000 AI prompts per member per month, unlimited personalized suggestions, full-sentence rewrites, tone controls, plagiarism checking, and AI-generated-text detection. Enterprise: contact sales and includes unlimited prompts per member per month plus enterprise controls. The extracted pricing page did not unambiguously expose the billing cadence attached to the displayed $12 Pro amount.
Official sources checked 2026-08-25Open verification questions
- The billing cadence represented by the $12 Pro price was not rendered unambiguously in the retrieved official pricing text.
- Grammarly's exact treatment may differ for negotiated Enterprise agreements, which are governed by a separate Customer Business Agreement rather than the public self-service terms.
Official sources confirm AI drafting, rewriting, tone adjustment, fluency suggestions, grammar assistance, plagiarism checking, and AI-text detection. For Free, Premium, and single-user Pro accounts, Product Improvement and Training is enabled by default, but users can opt out; when disabled, user content is not used for model training, validation, or product improvement. Multi-user accounts bought directly online are also enabled by default, with an administrator opt-out. Enterprise-tier, sales-purchased Pro/Business, and Education accounts have training disabled by default. Grammarly says its external LLM service providers may receive prompts and context to provide generative features but may not train their models on user content. Under the October 29, 2025 Superhuman terms, inputs and outputs are User Content, and users own all right, title, and interest in User Content; the terms also grant Superhuman a broad license for operating, improving, customizing, and developing its services.
Free: $0/member/month with a limited Notion AI trial. Plus: $10/member/month with a limited AI trial. Business: $20/member/month and includes Notion Agent, AI Meeting Notes, Enterprise Search beta, and core AI capabilities. Enterprise: custom pricing and includes zero data retention with LLM providers. Custom Agents are free to try, then cost $10 per 1,000 monthly Notion credits. Business and Enterprise AI usage is subject to rolling six-hour and monthly allowances; Notion does not publish the numerical allowance sizes, and affected features can pause until usage refreshes or credits are used.
Official sources checked 2026-08-25Open verification questions
- Notion does not publicly disclose the exact numerical limits for its rolling six-hour or monthly AI usage allowances.
- The exact credit consumption rate for each Custom Agent action varies by operation and is not fully specified on the general pricing page.
Official pages confirm AI features including Notion Agent, Custom Agents, Enterprise Search, AI Meeting Notes, Research Mode, AI writing, translation, file/image analysis, and database creation. By default, Notion and its AI subprocessors do not use Customer Data to train models; subprocessors are contractually prohibited from doing so. Some data-retaining LLM features may be enabled by workspace administrators. Deleted pages/workspaces can be restored for 30 days and are then deleted, including AI-generated data and embeddings. Notion states that it does not claim ownership of inputs or outputs; both are treated as Customer Data. Outputs may not be unique. Supplementary terms were last updated July 27, 2026.
How to decide
Match each platform to your actual workflow constraints. Run one real workflow in each finalist before paying.
Quick recommendation
Use the trial checklist on each review page and the free scorecard to record time-to-result, corrections needed, and monthly cost at your expected volume before committing to a plan.