Writesonic and Grammarly both pay 20% per sale, but that similarity is where the comparison ends. Grammarly offers a flat $20 per upgrade, a 90-day cookie, and a $25 minimum payout through CJ or ShareASale. Writesonic pays 20% of a larger recurring subscription for 12 months, uses a 60-day cookie, and has a $50 minimum payout via FirstPromoter. Choosing the right program depends on whether you value fast conversions from a trusted brand or long-term recurring revenue from a niche tool.
60-day cookie and built-in SEO optimization make this the strongest choice for blog traffic with long consideration cycles.
60-day cookie (best in category for blog traffic that researches before buying)
Built-in SEO optimization with Surfer SEO integration
AI Article Writer 5 generates 3,000-word articles from a keyword
$20 per upgrade with a 90-day cookie and universal audience appeal — the lowest-friction first commission for any affiliate marketer.
$20 per upgrade (not percentage) — one-time, not recurring
90-day cookie (longest in directory for writing tools)
Brand recognition: 30M+ daily active users
| Metric | Writesonic | Grammarly |
|---|---|---|
| Commission | 20% (recurring) | 20% (per_upgrade) |
| Recurring window | 12 months | 1 months |
| Cookie duration | 60 days | 90 days |
| Minimum payout | $50 | $25 |
| Network | FirstPromoter | CJ / ShareASale |
| Audience fit | bloggers, small-businesses, content-marketers | everyone, students, writers, non-native-speakers |
The Bottom Line: Writesonic is the better affiliate bet for revenue potential. Grammarly’s $20 per upgrade is one-time, while Writesonic’s 20% recurring commission for 12 months creates far higher lifetime value per customer. Grammarly’s 90-day cookie and universal audience make it easier to land a first sale, especially with a $25 minimum payout. But for bloggers and content marketers who rank long-form SEO articles, Writesonic wins on audience fit and built-in SEO credibility. The 60-day cookie still captures research-heavy buyers, and the 12-month recurring stream compounds over time. If your priority is immediate, low-friction commissions, Grammarly is safer. If you want maximum long-term payout per conversion, Writesonic is the stronger program.
Pick Writesonic if you... - Promote to bloggers, small-business owners, and content marketers. - Want recurring income: 20% commission for 12 months via FirstPromoter. - Rely on blog traffic that researches before buying — the 60-day cookie is best in category. - Want built-in SEO advantages: Surfer SEO integration and AI Article Writer 5, which generates 3,000-word articles from a keyword.
Pick Grammarly if you... - Want the lowest-friction first commission: a flat $20 per upgrade (one-time, not recurring) with a $25 minimum payout. - Serve everyone — students, writers, and non-native speakers — a universal audience. - Need maximum time to convert: the 90-day cookie is the longest in the directory. - Leverage brand recognition: 30M+ daily active users already know and trust Grammarly.
If you run an eCommerce store or small business promoting creative tools, Writesonic offers the better commission structure. Writesonic's 20% commission rewards high-intent traffic from product pages and checkout flows.
Enterprise buyers prefer in-house networks with transparent tracking. The program with established enterprise clients suit B2B marketers targeting procurement teams.
Solo creators should pick the program with the lowest payout threshold and highest cookie duration. Both options here are accessible for new affiliates.
Course creators benefit from the program with the longest recurring window. Both offer 12-month recurring commissions — perfect for evergreen course referrals.
Earn commissions by recommending these tools to your audience
Writesonic pays 20% recurring commission for 12 months; Grammarly pays a flat $20 per upgrade, one-time. For a $100 Writesonic sale, you earn $20 monthly for a year versus $20 once from Grammarly. So Writesonic pays more over time.
Writesonic's 60-day cookie and recurring 12-month commission make it strongest for blog traffic with long consideration cycles. Grammarly has a 90-day cookie but one-time $20 payouts, so Writesonic's built-in SEO and Surfer integration can drive higher lifetime value.
Grammarly has a $25 minimum payout versus Writesonic's $50, and its audience includes everyone, students, and non-native speakers. Writesonic targets bloggers and small businesses. Grammarly offers easier first commission, but Writesonic's recurring commissions may yield higher total payouts.