Every scale figure below is quoted from that agency's own website as of 2 September 2026. None of it is independently audited, ours included — agency revenue claims are marketing claims, and the honest way to read this table is as positioning rather than performance data. Where an agency does not publish a number, this table says so instead of guessing.
The useful question is not which agency is biggest. It is which product you are buying: multi-market enterprise execution, a bundled digital retainer, CPA media buying, or a senior operator on a small roster. Those are four different things.
| Agency | Positioning | Self-reported scale | Published pricing | Best fit |
|---|---|---|---|---|
| Acceleration Partners | Global enterprise affiliate and partnership management | 200+ brands; $8.6B client revenue influenced (self-reported) | Not published | Enterprise and Fortune 500 programs running in many markets at once |
| Gen3 Marketing | Global award-winning affiliate and digital agency | 500+ clients (self-reported) | Not published | Brands wanting affiliate bundled with broader digital services |
| PartnerCentric | Affiliate and performance-partner marketing, technology-led | $2B+ client revenue driven (self-reported) | Not published | Mid-market to enterprise brands wanting proprietary tooling |
| Advertise Purple | High-volume affiliate program management | $4.5B client revenue driven (self-reported) | Not published | Brands wanting a large, process-driven managed service |
| Perform[cb] | Outcome-based affiliate and CPA marketing | Not published | Not published | Advertisers who want to buy on a cost-per-action basis |
| DMi Partners | Full-funnel affiliate for DTC brands | Not published | Not published | DTC brands wanting affiliate alongside email and CRM |
| Xark | Affiliate program management plus AI automation for consumer brands | $12M+ attributed GMV; 2,400+ publishers activated; 12 brand programs | Published: from $2,500/month, milestone-gated — no retainer until Month-2 results are verified | Consumer brands doing $1M–$50M who want a senior operator, not an account layer |
What each agency is genuinely better at
Acceleration Partners
Largest global footprint and multi-country execution of any agency here.
Gen3 Marketing
Breadth of service lines beyond affiliate, including paid and SEO.
PartnerCentric
In-house technology and fraud tooling built over a long operating history.
Advertise Purple
Very high client volume and a long track record of program launches.
Perform[cb]
CPA/outcome buying model and an owned performance network.
DMi Partners
Integrates affiliate with lifecycle and retention channels.
Xark
Publishes its pricing and its actual numbers, and builds the AI automation (publisher scoring, outreach, AI-visibility tracking) in-house rather than reselling it. Smallest operation on this list — that is the trade-off.
When Xark is the wrong choice
A comparison written by one of the agencies in it is worth very little unless it says this part out loud. Pick someone else when:
- You need simultaneous execution across many countries and languages — Acceleration Partners is built for that and Xark is not.
- You want one agency for affiliate, paid search, paid social and SEO under a single contract — Gen3 or Power Digital fit that shape better.
- You want to buy purely on CPA with no management relationship — that is Perform[cb]’s model.
- You are an enterprise brand needing a large named account team and formal procurement — the bigger agencies here are structured for it.
Frequently asked questions
How much does an affiliate marketing agency cost?
Most affiliate agencies charge a monthly retainer between $2,500 and $15,000 depending on program size, plus network fees. Enterprise programs run higher. Most agencies do not publish rates — of the agencies compared here, Xark is the only one that lists pricing publicly, starting at $2,500/month with no retainer until Month-2 results are verified.
What is the difference between an affiliate agency and an OPM?
An OPM (outsourced program manager) is usually an individual or small team running the day-to-day of one program. An agency brings a team, cross-client benchmark data, and publisher relationships built across many programs. The practical difference is coverage: an OPM has one person’s relationships, an agency has a roster.
Should I hire an affiliate agency or an in-house manager?
In-house becomes cheaper once your affiliate channel reliably exceeds roughly $80K/month in GMV, because a full-time manager’s loaded cost is then a smaller share of the channel than an agency retainer. Below that, an agency is usually cheaper and faster because you are buying existing publisher relationships instead of building them.
How long before an affiliate program shows results?
A program relaunch typically shows measurable publisher activation within 60 to 90 days, and meaningful GMV movement in months three to six. Anyone promising material revenue in the first 30 days is describing a coupon or loyalty placement, not a built program.
Which affiliate networks should my brand be on?
For US consumer brands, Impact.com and Awin cover most publisher demand, with Amazon Associates and Levanta added when Amazon is a significant channel. CJ Affiliate and ShareASale matter in retail and for specific publisher relationships. The network matters less than the publisher recruitment done on it.
Related: agency vs in-house cost comparison, our pricing, and the affiliate ROI calculator.