Grammarly vs Windsurf
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A detailed comparison of Grammarly and Windsurf in 2026 — features, pricing, and which tool is right for you.
| Grammarly | Windsurf | |
|---|---|---|
| Rating | ★ 4.5/5 | ★ 4.5/5 |
| Pricing type | Freemium | Freemium |
| Starting price | $12/mo | $15/mo |
| Category | AI Writing & Content | AI Coding Assistants |
| Founded | 2009 | 2021 |
| Key features | Real-time grammar correction, Tone adjustment, GrammarlyGO (generative) | Autonomous Cascade agent, Understands your entire codebase, Autocomplete |
Grammarly
AI grammar and writing assistant
Grammarly checks grammar, spelling, and tone, and now includes GrammarlyGO for AI-generated and rewritten content. It works everywhere you type.
Pros- Works everywhere (web, apps, extensions)
- Excellent error correction
- Useful free plan
- Primarily English-focused
- Full feature set requires Premium
Windsurf
AI IDE with an autonomous agent (by Codeium)
Windsurf (formerly Codeium) is an AI-first editor built around "Cascade" — an agent that can execute multi-step tasks, run commands, and edit code across files. A direct competitor to Cursor.
Pros- Powerful, self-driving agent
- Solid free plan
- Cheaper than competitors
- Still relatively new
- Agent occasionally goes off track
Grammarly vs Windsurf: Which one should you choose?
If you prioritize works everywhere (web, apps, extensions), Grammarly is worth considering. Conversely, if powerful, self-driving agent matters more to you, go with Windsurf. Both offer a free trial option, so it is best to try them out yourself before deciding.