Grammarly vs Windsurf

Grammarly edges out Windsurf by 0.5 points (8.0 vs 7.5) -- a A-tier vs B-tier split that's narrow but real. Not a blowout; both belong on a shortlist. The score gap shows up most clearly in the categories that matter for Grammarly's strengths, so if those categories are your priority, the lead translates.

Pricing-wise, both tools have a free tier (Grammarly starts $0, Windsurf starts $0), so you can test either without committing. Compare what each free tier actually unlocks -- usage caps, model access, and feature gates differ a lot more than the headline price suggests, especially as both vendors have tightened limits in 2026.

By use case: pick Grammarly when non-native english speakers, professionals who write lots of emails, and anyone who wants a passive grammar net running in the background. Pick Windsurf when developers who want agent-first coding (background + inline) inside a familiar vs code-based editor, and who value cognition's devin integration as a core part of the workflow. The two tools aren't fighting for the same person -- they're aiming at adjacent jobs that occasionally overlap. If you're squarely in Grammarly's lane, the tier-list ranking and the use-case fit point the same direction; if you're in Windsurf's lane, the score gap matters less than the fit.

Bottom line: Grammarly is the safer default for most readers, but Windsurf is competitive enough that the tie-breaker is your specific workload, not the spec sheet.