Method: We checked each vendor’s official pricing, help, privacy, and security materials on July 16, 2026. Taxes, regional pricing, currencies, billing intervals, and promotions can change, so verify the checkout page before purchasing.
Scope: Only reproducible official facts are presented as facts. We do not make unverified claims about which system writes “most naturally,” is “most accurate,” or is universally the “best.”
Commercial disclosure: This article contains no affiliate links at publication. Any future affiliate relationship will be disclosed near the relevant link and under our Affiliate Disclosure.
Bottom line: choose by workflow location and data sensitivity
ChatGPT
A candidate for drafting, summarizing, research, file analysis, and other work in one environment.
Claude
A candidate for long documents, project knowledge, and workplace connectors. The Team plan requires at least five members.
Gemini
A candidate for teams that write inside Gmail, Docs, Sheets, Meet, and the wider Google Workspace environment.
Notion AI
A candidate when company knowledge, meeting notes, databases, and projects already live in Notion.
Grammarly
A candidate for English grammar, tone, rewriting, style guides, and brand consistency across a team.
Comparison table
| Tool | Officially documented writing-related use | Pricing structure at verification | Organization use | Data-policy point to verify |
|---|---|---|---|---|
| ChatGPT | Writing, search, file uploads, data analysis, projects, deep research | Free and paid individual plans. Business starts at two users; confirm local checkout pricing. | Dedicated workspace plus business administration and security features. | Business and Enterprise organization data is not used to train models by default. |
| Claude | Writing, long-document work, projects, knowledge bases, workplace connectors | Free. Pro: US $20/month or $200/year. Team Standard: $25 monthly or $20/month equivalent annually, minimum five members. | Team includes centralized administration, billing, SSO, permissions, and connectors. | Commercial-product data is not used for training unless the customer joins an optional development program. |
| Gemini | Gemini app and AI assistance in Gmail, Docs, Sheets, Meet, and other Google services | Free access exists. Google Workspace US list pricing is $7/$14/$22 per user/month on annual commitment for Starter/Standard/Plus; local pricing varies. | Gemini is included across Workspace Business tiers, with broader integration and controls on higher tiers. | Google states licensed Workspace with Gemini data is not used for model training or human review. |
| Notion AI | Writing and editing, workspace search, database work, meeting notes, research | Free and Plus provide limited trial responses. Continued AI access is on Business or Enterprise; billing is per workspace member. | Best integrated when documents, tasks, databases, and knowledge already live in Notion. | Workspace data is not used to train Notion models by default; AI subprocessors are contractually restricted from training on customer data. |
| Grammarly | Full-sentence rewrites, tone suggestions, English editing, style guides, brand tones, snippets | Free version. Pro: US $30 monthly, $60 quarterly, or $144 annually per member; up to 149 seats. | Multi-member plans add team style, brand, sharing, and analytics features. | Training is on by default for individual and direct-purchase Pro accounts but can be disabled; certain sales-assisted business plans default to off. |
Prices may exclude tax and may differ by country, currency, billing period, or promotion.
How we compared the tools
- Document capabilities: Officially documented drafting, summarizing, rewriting, tone, and in-document editing.
- Workflow integration: Connections to Google Workspace, Notion, company knowledge, browsers, or desktop writing surfaces.
- Pricing predictability: Free access, individual subscriptions, per-seat billing, minimum seats, and regional variation.
- Administration and data controls: Training defaults, admin settings, dedicated workspaces, permissions, and identity management.
- Business fit: Practical fit for a solo operator, a small team, or a company already centered on a specific platform.
Official facts and practical fit
1. ChatGPT: broad drafting and research workflows
OpenAI’s official plan comparison documents search, file uploads, projects, data analysis, deep research, and writing-adjacent capabilities. It is a candidate when a business wants to move from source material to an outline, draft, summary, table, or analysis in one service.
Suitable workflows
- Email, proposal, and article drafts
- Writing based on PDFs, spreadsheets, and presentations
- Turning research into structured text and tables
Before purchase
- Individual and Business plans have different controls
- Business starts at two users
- Confirm local pricing and tax at checkout
Data: OpenAI states that inputs and outputs from ChatGPT Business, Enterprise, and other business products are not used to train models by default.
2. Claude: long documents and shared knowledge
Anthropic’s official Team documentation lists projects, knowledge bases, workplace connectors, centralized administration and billing, SSO, permissions, and a 200k context window. Team Standard requires at least five members and is listed at US $25 per member monthly or $20 per member per month with annual billing.
Suitable workflows
- Long reports, policies, and manuals
- Drafting against project-specific reference material
- Searching connected Google Drive, Slack, or Microsoft 365 content
Before purchase
- Pro and Team are separate account types
- Team requires at least five members
- Regional currency and tax can differ
Data: Anthropic states that inputs and outputs from commercial products such as Team and Enterprise are not used for model training by default unless the customer explicitly submits feedback or otherwise permits use.
3. Gemini: writing inside Google Workspace
Google Workspace pricing documents Gemini assistance in Gmail on Business Starter and broader integration across Docs, Meet, and other apps on Business Standard and higher. This makes Gemini a practical candidate when email, documents, spreadsheets, meetings, and company accounts are already managed through Workspace.
Suitable workflows
- Drafting and summarizing email in Gmail
- Writing and revising in Google Docs
- Using existing Workspace content in business writing
Pricing view
- US Workspace list prices: $7/$14/$22 on annual commitment
- Billing is per user and local prices vary
- Higher tiers add storage, controls, and broader AI integration
Data: Google states that licensed Workspace with Gemini submissions are not used to train models and are not reviewed by humans.
Official Workspace pricing / Workspace with Gemini data protections
4. Notion AI: writing where company knowledge already lives
Notion documents AI writing and editing, workspace and connected-app search, database creation and autofill, meeting transcription and summaries, and research. The help center states that full Notion AI access is available on Business and Enterprise, while Free and Plus receive limited complimentary responses for evaluation.
Suitable workflows
- Writing from an internal wiki
- Keeping meeting notes and tasks together
- Summarizing and populating database records
Before purchase
- Billing is per workspace member
- Free and Plus AI use is limited and trial-oriented
- AI connectors require Business or Enterprise
Data: Notion states that workspace data and personal information are not used to train its models by default, and AI subprocessors are contractually prohibited from using customer data to train their models.
5. Grammarly: English editing and brand consistency
Grammarly Pro documents full-sentence rewrites, tone suggestions, plagiarism detection, generative AI, and team features including style guides, brand tones, knowledge sharing, snippets, and usage analytics. Official pricing is US $30 monthly, $60 quarterly, or $144 annually per member, with support for up to 149 seats.
Suitable workflows
- Editing English email, proposals, and web copy
- Standardizing tone and terminology across a team
- Improving existing text inside writing applications
Important limitation
- The core role is writing improvement, not broad research
- Generative AI use has plan limits
- Review the training-control default for the purchase channel
Data: Grammarly states that Product Improvement and Training is enabled by default for individual and directly purchased Pro accounts but can be turned off. Certain sales-assisted business and enterprise accounts default to off.
Official Grammarly Pro pricing / Official training-control documentation
Five checks before entering confidential data
- Consumer or organization plan: Products with the same name can have materially different administration and data terms.
- Training default: “Not used by default” is different from “enabled unless you opt out.”
- Prohibited content: Avoid entering passwords, payment details, government identifiers, health records, and unpublished customer information without an approved policy.
- Admin controls: Review SSO, offboarding, sharing scopes, connectors, and permissions.
- Human review: Verify facts, numbers, legal references, citations, rights, and regulated claims before publishing.
A practical selection path for a small business
One or two people with broad needs
Start with a free or individual ChatGPT or Claude plan for public-information drafting, summarizing, and outlining. When confidential customer or company material becomes part of the workflow, compare the relevant Business or Team terms. Note that Claude Team requires five members, while ChatGPT Business starts at two users.
A Google Workspace-centered company
When email, documents, spreadsheets, and meetings already run on Workspace, integrated Gemini features may reduce copying between systems and separate account administration.
A Notion-centered company
When the internal wiki, meeting notes, projects, and databases already live in Notion, Notion AI can use that existing structure. Full AI access requires Business or Enterprise.
English quality and brand consistency
When the primary requirement is English grammar, tone, reusable wording, and style governance, Grammarly is a specialist candidate rather than a substitute for a broad research assistant.
Frequently asked questions
Can a small business rely only on free plans?
Free plans can support trials and occasional drafting, but usage limits, administration, and data controls differ from paid and business plans. Review a business contract and internal policy before handling confidential information.
Can AI-generated copy be published without review?
No. A person should verify facts, copyright and trademark issues, personal data, potentially misleading claims, and any industry-specific rules before publication.
Which single tool should a small business choose?
It depends on the workflow. ChatGPT or Claude fit broad drafting and research, Gemini fits Google Workspace workflows, Notion AI fits knowledge already stored in Notion, and Grammarly fits English editing and brand consistency.
Official sources reviewed
- OpenAI — ChatGPT PlansPlan structure, features, and Business minimum users
- OpenAI — Business data privacy, security, and complianceTraining use of organization data
- Anthropic — Choose a Claude planOfficial Free, Pro, and Max pricing
- Anthropic — What is the Team plan?Minimum seats, pricing, administration, and connectors
- Anthropic — Commercial data processingTraining use for commercial products
- Google Workspace — PricingBusiness tiers and Gemini integration
- Google — Workspace with Gemini FAQOrganization data protection and training use
- Notion — What is Notion AI?Features and plan availability
- Notion — AI security and privacy practicesSubprocessors and customer data
- Grammarly — Pro pricingMonthly, quarterly, and annual pricing
- Grammarly — Product Improvement and Training ControlTraining defaults by account and purchase type