CustomGPT.ai vs Synthflow affiliate programs
CustomGPT.ai and Synthflow are AI agents tools that both run affiliate programs. CustomGPT.ai lists Up to 20% for the first 2 years through FirstPromoter; Synthflow lists 20% 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 | CustomGPT.ai Verified | Synthflow Verified |
|---|---|---|
| Commission | Up to 20% for the first 2 years | 20% |
| Structure | Recurring | Recurring |
| Cookie window | Not stated | Not stated |
| Network | FirstPromoter | PartnerStack |
| Payout threshold | $10 | Not stated |
| Terms checked | 2026-08-20 | 2026-07-03 |
| Source | Open source ↗ | Open source ↗ |
What matches, what differs
Differences
- Different platforms: FirstPromoter against PartnerStack, meaning two dashboards and two payout schedules.
In common
- Both are AI agents tools.
- Both pay recurring commission.
What these terms mean in practice
Promoting both means two applications, two dashboards, and two payout schedules — FirstPromoter for CustomGPT.ai and PartnerStack for Synthflow, 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 cookie window.
- Synthflow does not publish a payout threshold.
How to read these two records
Both rates are stated as percentages of customer payments, so the figures share a basis. They may still cover different plans, billing terms, and eligibility rules.
Both pay recurring commission. One of the two does not state a cookie window, so the attribution windows cannot be compared.
aifilliate publishes no ranking between CustomGPT.ai and Synthflow. 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.