📊 Data source: Manual research + official pricing page•🔄 Updated April 2026•✅ 76% confidence score

Design

Grammarly True Cost Calculator

AI writing assistant for grammar, clarity, and tone. Free plan is basic, then $12-$15/user/mo for full features — but AI generation limits and team management create hidden costs.

Advertised Price

/month

Estimated True Cost

$12

/month (typical usage)

Surprise Factor

N/A×

more than expected

Confidence

76%

Data source: manual

Calculate Your Exact Cost →

Hidden Fees & Gotchas

What the pricing page doesn't tell you

AI Writing Assistance Limits

Generative AI features (rewrite, compose, ideate) have monthly prompt limits. Premium gets 1,000 prompts/mo, Business gets 2,000. Heavy users burn through mid-month.

Trigger: aiPrompts > 1000

+$0

/monthly

Premium Required for Full Features

Free plan only catches basic grammar and spelling. Clarity, tone detection, word choice, formality level, and plagiarism detection require Premium at $12/mo.

Trigger: advancedFeatures > 0

+$12

/monthly

Per-Seat Team Pricing

Grammarly Business at $15/user/mo. A 50-person team = $750/mo ($9,000/yr). Team analytics, style guides, and brand tones require Business tier.

Trigger: seats > 1

+$0

/monthly

Total hidden fees: +$12/mo on top of the $0 advertised price

Grammarly Pricing Tiers

Plan	Monthly	Annual (per mo)	Key Limits	Overage Rules
Free	$0	$0	Plagiarism: false Ai Assistance: limited Basic Grammar: true Tone Detection: false	No overages
PremiumPOPULAR per user	$12	$12	Ai Rewrites: 1000 Plagiarism: true Full Grammar: true Gen Ai Prompts: 1000	No overages
Business per user	$15	$15	Sso: true Analytics: true Ai Rewrites: 2000 Brand Tones: true	No overages