Productivity comparison
Gamma vs Grammarly
AI-generated presentations, decks, microsites, and narrative documents · Business writing, grammar, tone, and communication quality across apps
| Decision point | Gamma | Grammarly |
|---|---|---|
| Best for | AI-generated presentations, decks, microsites, and narrative documents | Business writing, grammar, tone, and communication quality across apps |
| Category | Productivity | Productivity |
| Price | Free + paid plans | Free + paid plans |
| AIToolsEssentials score | 4.3/5 | 4.4/5 |
Evidence status
free: $0; 400 one-time signup credits that do not refill; up to 10 slides per prompt; PDF, PPTX, PNG, and Google Slides export. plus: $9/seat/month equivalent, $108/seat billed annually; 1,000 monthly credits, up to 100 slides per prompt, branding removal, and advanced image models. pro: $18/seat/month equivalent, $216/seat billed annually; 4,000 monthly credits, premium image models, custom branding/fonts, analytics, 10 custom domains, API access, and workspace templates. ultra: $90/seat/month equivalent, $1,080/seat billed annually; 20,000 monthly credits, advanced text/image/video models, 100 custom domains, and early feature access. team: $20/seat/month, $240/seat billed annually; 6,000 monthly credits per seat, centralized billing, company theme, shared folders, admin controls, and advanced data controls. business: $40/seat/month, $480/seat billed annually; 10,000 monthly credits per seat, SSO, advanced models, and advanced data controls. enterprise: Custom annual agreement.
Official sources checked 2026-08-25Open verification questions
- The official page was extracted in its annual-billing state. Monthly individual-plan checkout prices were not independently captured and should not be inferred from the annual discount.
- Gamma's terms grant a broad training license where training controls are unavailable or left enabled; publications should distinguish individual plans from Team/Business plans.
The repository's 400-credit Free allowance remains supported, but those are one-time starter credits rather than a monthly refill. The repository's Plus $10 and Pro $20 figures do not match the current official annual-pricing view, which shows $9 and $18 monthly equivalents. Paid credits roll over only up to twice the monthly allocation; additional credits can be purchased. Individual Free, Plus, Pro, and Ultra workspaces allow Gamma to use content for AI-feature improvement by default, but users can opt out in account settings. Team and Business workspace content is automatically excluded from training, with the control locked. Gamma does not claim ownership of user content. Users grant Gamma a license needed to operate and provide the service. The pricing page also states that content remains the user's after cancellation or downgrade. Public API documentation is available at https://developers.gamma.app/; the pricing page says API access is available on paid plans and consumes AI credits.
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.
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.