Grammarly
Grammar, tone and generative rewriting across browser, desktop and mobile.
Full Grammarly record →Head to head
Grammarly vs Claude
Grammarly (Grammarly) and Claude (Anthropic) both sit in Writing. Grammarly is the cheaper entry point at Free tier · from $12/mo. Claude shipped more tracked changes in the last 30 days (12 vs 0). Every value below comes from the latest crawl of the vendors' own pages.
| Attribute | Grammarly Grammarly | Claude Anthropic |
|---|---|---|
| Segment | Writing | Writing |
| Version | Pro | 5.5 |
| Entry cost | Free tier · from $12/mo | Free tier · from $17/mo |
| Pricing tiers | Free free · Pro $12 · Enterprise free | Free free · Pro (Annual Subscription Discount) $17 · Pro (Billed Monthly) $20 · Max $100 · Ultra $200 · Team Standard seat (Billed Monthly) $25 · Team Standard seat (Billed Annually) $20 · Team Premium seat (Billed Monthly) $125 |
| Model stack | Grammarly AI · Grammarly AI Assistant · Grammarly ML · Grammarly Proprietary AI · Grammarly proprietary ML/AI · In-house NLP models · Undisclosed frontier LLM | Claude Fable 5 · Claude Fable 5.1 · Claude Haiku 4.5 · Claude Haiku 5.5 · Claude Mythos 5 · Claude Mythos 5.1 · Claude Opus 4.5 · Claude Opus 4.8 · Claude Opus 5 · Claude Opus 5.5 · Claude Sonnet 5 · Claude Sonnet 5.5 · Opus 4.6 · Opus 4.7 · Sonnet 4.5 · Sonnet 4.6 |
| Context window | Not published | 1M |
| Public API | ||
| Routes models | ||
| Changes / 30d | 0 | 12 |
| Origin | Global | Global |
| Capabilities | Grammar and tone, Generative rewriting, Plagiarism detection, AI detection, Docs editor, Grammar Checker, Plagiarism Checker, AI Detector | Extended thinking, Agentic research, Computer use, Projects & memory, Artifacts, MCP connectors, Vision, Code execution |
Claude
Known for long context, careful reasoning, and artifact-style document editing.
Full Claude record →