Grammarly vs Smartli affiliate programs
Grammarly and Smartli are AI writing tools that both run affiliate programs. Grammarly lists $0.20 per free signup + $20 per upgrade through Impact; Smartli lists Up to 35% per sale through PartnerStack. One of the two does not state a cookie window, so the attribution windows cannot be compared. aifilliate records each program from a cited vendor source and does not rank the two.
| Recorded term | Grammarly Verified | Smartli Verified |
|---|---|---|
| Commission | $0.20 per free signup + $20 per upgrade | Up to 35% per sale |
| Structure | One-time | One-time |
| Cookie window | 90 days | Not stated |
| Network | Impact | PartnerStack |
| Payout threshold | Not stated | Not stated |
| Terms checked | 2026-08-22 | 2026-08-22 |
| Source | Open source ↗ | Open source ↗ |
What matches, what differs
Differences
- Different platforms: Impact against PartnerStack, meaning two dashboards and two payout schedules.
In common
- Both are AI writing tools.
- Both pay one-time commission.
What these terms mean in practice
Promoting both means two applications, two dashboards, and two payout schedules — Impact for Grammarly and PartnerStack for Smartli, each with its own approval and its own minimum.
What is not published
Anything below has to be confirmed with the vendor before either offer can be modelled. aifilliate records it as unknown rather than estimating it.
- Neither vendor publishes a payout threshold.
- Smartli does not publish a cookie window.
How to read these two records
These payouts do not share a basis — one is quoted as a percentage, the other as a flat amount per conversion. A percentage of an unknown plan price and a fixed bounty are not the same unit, so aifilliate does not rank them.
Both pay one-time commission. One of the two does not state a cookie window, so the attribution windows cannot be compared.
aifilliate publishes no ranking between Grammarly and Smartli. Which program earns more depends on plan price, conversion rate, retention, and refund reversals in your own audience — none of which appear in published affiliate terms. Confirm eligibility, paid-search and trademark rules, and payout timing with each vendor before promoting either.