Grammarly vs Sudowrite (2026): Which AI App Is Better?

Both are popular ai writing & copywriting. Here is how Grammarly and Sudowrite stack up on price, strengths and weaknesses, and which one we would pick.

Grammarly

Grammar, tone and rewriting help in every app you type in

8.7 /10

Pricing: Free plan, paid from $12/mo

Pros

Works in almost every app and browser
Reliable, conservative corrections
Strong tone and clarity suggestions

Cons

Generative features are weaker than dedicated assistants
Constant upsells on the free plan

Visit Grammarly ↗

Sudowrite

Fiction-writing companion for drafting, brainstorming and rewriting scenes

8.0 /10

Pricing: Paid from $19/mo

Pros

Purpose-built for fiction, not marketing copy
Story Bible keeps long projects consistent
Multiple models to choose from

Cons

Credit-based plans run out on long drafts
Prose can drift generic without heavy editing

Visit Sudowrite ↗

Grammarly vs Sudowrite at a glance

	Grammarly	Sudowrite
Editor score	8.7 / 10	8.0 / 10
Pricing model	Freemium	Paid
Starting price	$12/mo	$19/mo
Reader upvotes	0	0
Best for	grammar, proofreading, browser extension	fiction, novels, creative writing

Our pick

Grammarly edges it with a score of 8.7 versus 8.0. Grammarly is the better fit if you value: works in almost every app and browser, reliable, conservative corrections. Choose Sudowrite instead if you need: purpose-built for fiction, not marketing copy, story bible keeps long projects consistent.