What is Synthesia?
Enterprise-grade AI avatar and video platform trusted by 60% of Fortune 100 for professional training and corporate communications.
Key Facts
- Used by 60% of Fortune 100 companies
- Free Starter plan for a year after 10th sale
- Custom AI avatar after 15th sale
Pricing Plans
Commission Breakdown
Pros
- Synthesia pays a solid 25% commission rate, competitive for enterprise AI tools.
- Commission is recurring — you keep earning on renewals for the full window.
- 60-day cookie window provides solid attribution coverage for B2B sales.
- 12-month recurring window is the longest in this comparison.
- Rewardful is a reliable, widely-used affiliate network with good tracking.
- Used by 60% of Fortune 100 companies
- Free Starter plan for a year after 10th sale
- Custom AI avatar after 15th sale
Cons
- Higher $30 minimum payout may delay first withdrawal.
Audience Fit
- enterprise
- LnD
- corporate-training
- B2B marketers
What is Grammarly?
$20 per upgrade with a 90-day cookie and universal audience appeal — the lowest-friction first commission for any affiliate marketer.
Key Facts
- $20 per upgrade (not percentage) — one-time, not recurring
- 90-day cookie (longest in directory for writing tools)
- Brand recognition: 30M+ daily active users
Pricing Plans
Commission Breakdown
Pros
- Grammarly pays 20% recurring commission, on par with industry averages.
- 90-day cookie is 2-3x the industry standard, giving you ample time to convert leads.
- Low $25 minimum payout is easy to reach.
- $20 per upgrade (not percentage) — one-time, not recurring
- 90-day cookie (longest in directory for writing tools)
- Brand recognition: 30M+ daily active users
Cons
- 1-month window is shorter than Synthesia's 12 months.
Audience Fit
- everyone
- students
- writers
- non-native-speakers
Side-by-Side Comparison
Our Verdict
The Bottom Line: Synthesia is the better affiliate bet for maximum earnings. Its 25% recurring commission over 12 months on enterprise plans can generate substantial lifetime value from a single sale. Grammarly's $20 per upgrade is one-time, not recurring, so even with a 90-day cookie and huge brand recognition, your upside is capped. For affiliates with B2B, LnD, or corporate-training audiences, Synthesia's high-ticket recurring model clearly pays more. Grammarly remains the smarter choice for beginners wanting fast, low-friction conversions.
Which Should You Pick?
- Pick Synthesia if you target enterprise, L&D, or corporate-training audiences. Earn 25% recurring for 12 months, 60-day cookie, $30 minimum payout on Rewardful. Used by 60% of the Fortune 100. Unlock a free Starter plan after your 10th sale and a custom AI avatar after your 15th. Perfect for B2B marketers chasing recurring revenue.
- Pick Grammarly if you want the easiest first commission. You earn a flat $20 per upgrade (not recurring) with a 90-day cookie — the longest in the directory for writing tools. Minimum payout is $25 via CJ or ShareASale. With 30M+ daily active users and universal appeal (students, writers, non-native speakers), it's the lowest-friction start for any affiliate marketer.
Best Use Cases by Audience
For Small Business / eCommerce
If you run an eCommerce store or small business, Synthesia offers 25% commission with a 60-day cookie. Grammarly extends recurring for 1 months with 90-day cookie for compounding LTV over time.
For Enterprise / Agencies
Enterprise agencies benefit from Synthesia's 25% rate and established network (Rewardful). The 60-day cookie helps close B2B deals.
For Creators / Indie Hackers
Solo creators should prioritize lowest payout threshold and longest cookie. Grammarly has the lower minimum payout, while Grammarly gives you more time to convert delayed purchases.
For Education / Course Creators
Course creators benefit from the longest recurring window. Synthesia extends recurring commissions for 12 months, aligning with evergreen course referrals and student purchase cycles.
Start Promoting Synthesia & Grammarly
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Frequently Asked Questions
Which Synthesia vs Grammarly affiliate program pays the higher commission rate in 2026?
Synthesia pays 25% recurring for 12 months, so a $100 subscription yields $25 monthly. Grammarly pays a flat $20 per upgrade non-recurring. Synthesia clearly pays more on higher-ticket enterprise subscriptions, though Grammarly suits quick conversions.
How do cookie durations and payout thresholds differ between the two programs?
Grammarly provides a 90-day cookie and a $25 minimum payout, while Synthesia uses a 60-day cookie with a $30 minimum. Grammarly’s longer cookie and lower threshold make it more beginner-friendly for earning sooner.
Which program offers better long-term revenue potential for affiliates targeting businesses?
Synthesia wins long-term for B2B affiliates because its 25% recurring commission spans 12 months per client. With 60% of Fortune 100 companies as customers and enterprise-level pricing, recurring revenue accumulates rapidly. Grammarly’s one-time $20 per upgrade suits high-volume consumer traffic instead.