Build 11-20% Lookalike Audiences That Meta Won’t Let You Create
Meta’s Ads Manager caps lookalikes at 10%. Our tool uses the Marketing API to unlock 11-20% audiences—no code required. Get early access.
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What You Get
Unlock Hidden Audiences
Create lookalike audiences from 11% to 20%—percentages that don’t exist in Ads Manager. Same algorithm, wider reach.
No Code Required
Connect your ad account, pick a source audience and percentage, and the tool generates the lookalike directly in your Ads Manager.
Scale Without Broad
When your 10% lookalike taps out and CPMs climb, a 15% lookalike gives you fresh reach without abandoning your seed signal.
Test Exclusion Bands
Create a 20% lookalike and exclude your 10%. The 11-20% band tells you if your product has broader appeal than you thought.
Why Does This Exist?
The Meta Marketing API accepts a ratio parameter between 0.01 and 0.20 when creating lookalike audiences. Set it to 0.15 and you get a 15% lookalike—roughly 31 million people in the US. The same source audience quality rules apply. The algorithm just draws a wider circle around your seed.
Most advertisers have no idea this parameter exists because the Ads Manager UI caps the slider at 10%. You need API access or a tool built on top of it. That’s what this is.
Audience Reach by Percentage
When to Use Super Lookalikes
Top-of-funnel awareness at scale
Spending $500+/day on prospecting and your 10% lookalike is tapped out? A 15% lookalike gives you fresh reach without abandoning the seed signal entirely. You’re still anchored to your customer data. Broad targeting throws that away.
Small markets where 10% is too small
In countries with smaller Meta user bases (Australia, Netherlands, Nordics), a 10% lookalike might only give you 500K-1M people. That’s not enough for Meta’s algorithm to optimize efficiently. Expanding to 15-20% gives the system room to work.
Advantage+ audience seeding
Feeding lookalikes as audience suggestions into Advantage+ campaigns? A wider seed (15-20%) gives the algorithm a broader starting signal while still anchoring to your customer profile. We’ve tested this on accounts spending $50K+/month and seen it reduce CPAs versus pure broad with no suggestion.
Exclusion band testing
Create a 20% lookalike, exclude your 10%. The resulting 11-20% band is everyone who’s somewhat similar to your customers but not close matches. If it converts, your product has broader appeal than you thought. If it bombs, you know your sweet spot is in the tighter percentages.
Frequently Asked Questions
Is this actually allowed by Meta?
Yes. The Marketing API officially supports a ratio parameter up to 0.20. This isn’t a hack or workaround—it’s a documented API feature that Meta simply doesn’t expose in the Ads Manager UI.
Do I need a Meta developer account?
No. The tool handles the API connection for you. You just connect your ad account through a standard OAuth flow—the same process you’d use for any Meta marketing tool.
Will the lookalike show up in my Ads Manager?
Yes. Once created, the audience appears as a selectable custom audience in your ad sets, just like any lookalike you’d build through the normal UI.
What source audiences work best?
The same rules apply as standard lookalikes: high-quality seed audiences beat large ones. Purchase-based seeds, high-LTV customer lists, and website custom audiences from conversion events will give you the best results at wider percentages.
How much does it cost?
The tool is free. You’ll only pay for the ad spend on campaigns that use the audiences you create.
Ready to Go Beyond 10%?
Get notified when the Super Lookalike tool launches. No spam, just access.
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