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Meta publishes one creative-volume number, and it isn't any of the ones you've been told

Meta advises at least 20 diversified ads in Advantage+ shopping and 20-30% of budget on testing. The 8-15 per ad set and Entity ID rules aren't Meta's.

Meta's published recommendation is at least 20 diversified ads in Advantage+ shopping campaigns, with 20–30% of overall ad budget on testing new ads, and new ads launched weekly by the advertisers doing it best. That is one number, scoped to one campaign type, and the word diversified is doing most of the work. The figures circulating instead (eight to fifteen per ad set, fifty a month, 50 to 100 conversions per Entity ID) aren't Meta's.

Ask how many ads you should be running and you will get an answer within seconds. The trouble is that you will get a different answer from every source, each stated as a fact about how Meta's system works, and almost none of them carrying a link.

Here is what the guides claim: that accounts running three creatives per ad set under-deliver against accounts running eight to fifteen; that brands testing twenty-plus new ads a month see 65% higher ROAS; that you want three to five genuinely new concepts per month for every $50,000 of monthly spend; that budget should split 70% proven, 20% testing, 10% experimental; and that Andromeda needs 50 to 100 conversions per Entity ID before it exits the learning phase.

Five guides, five incompatible numbers, no citations. Meta has published both less and more than the internet suggests.

The number Meta actually publishes

It is on a Best Practices page from November 2024, Three steps to optimize your performance with creative diversification, and it is unambiguous:

As a best practice, we recommend maintaining at least 20 diversified ads in Advantage+ shopping campaigns and dedicating 20-30% of your overall ad budget towards testing new ads.

The same page addresses cadence, and is careful about it in a way the republished versions are not:

The best creative diversification leaders routinely launch new ads on a weekly basis but if you're just getting started your schedule may look different based on your resources.

That is the recommendation, in full. Three things about it matter more than the number.

It is scoped. Twenty ads in Advantage+ shopping campaigns, not twenty per ad set, not twenty everywhere. A guide that reports it as a general threshold has dropped the only clause that tells you when it applies.

"Diversified" is part of the rule. Twenty diversified ads. Meta's definition of the term, from a companion page, is "a wide range of ad creatives with different themes, messages, and visuals to cater to diverse audience segments." Twenty crops of one photograph satisfy the count and none of the definition.

The cadence is explicitly conditional. Weekly is what the strongest practitioners do, and Meta says outright that yours may differ based on your resources. It is an observation about leaders, not a threshold you are failing.

So a budget split is published: 20–30% on testing, not 70/20/10. A volume figure is published: 20 diversified ads in Advantage+ shopping, not 8–15 per ad set. The industry replaced Meta's numbers with its own and kept the authority.

The Andromeda claim has no source

One of the five is different in kind. "Andromeda needs 50 to 100 conversions per Entity ID to exit the learning phase" describes a specific mechanism inside a specific named system, and that system has two technical documents behind it: Meta Andromeda: Supercharging Advantage+ automation with the next-gen personalized ads retrieval engine, published December 2024, and Meta Andromeda: Powering the Next Generation of Ads Retrieval Through Model-System Co-Design, published October 2026.

The 2024 post is about the retrieval stage:

Retrieval is the first step in our multi-stage ads recommendation system. This stage is tasked with selecting ads from tens of millions of ad candidates into a few thousand relevant ad candidates.

Retrieval narrows an enormous pool to a shortlist before ranking and the auction get involved. The phrase "learning phase" does not appear in the post. Neither does "per ad set". The word "entity" appears exactly once, inside the page's structured-data markup, as the property name mainEntityOfPage. The 2026 post describes a rebuilt retrieval model and doesn't use either phrase.

The learning phase is a real, separately documented part of Meta's delivery system. Andromeda is a retrieval engine. Welding the two together produces a confident sentence about a mechanism that has never been described anywhere, and the precision of "50 to 100" is what makes it persuasive.

The number itself does appear in one Meta document, just not this one. Under goal-based bidding, Meta's About bid strategies page says: "We recommend 50–100 or more weekly conversions for best performance." That is advice for two bid strategies (cost per result goal and ROAS goal), not a learning-phase rule, and it mentions neither Andromeda nor Entity IDs. The learning phase has its own exit condition.

What Meta's documents do say about volume

Meta does talk about volume, often. It just never separates it from diversity.

The advertiser-facing page describes generative tools making it easier to "upload more volume and diversity of creative," and the engineering post uses the word repeatedly while explaining why retrieval had to be rebuilt: the number of ad creatives in Meta's systems is expected to grow significantly, and Andromeda exists to handle that growth. More than a million advertisers made more than 15 million ads in a month with those tools.

None of that is advice about your account. It is Meta explaining why it needed a bigger filter. The pairing is always volume and diversity; what travelled was the volume half, because a count is actionable and "different themes, messages and visuals" is a judgement call. The hard counts Meta sets are ceilings: a single ad limit per Page, shared by every ad account that advertises for it, and a separate limit on ads per ad account.

The figures Meta does attribute

The three Meta pages do put numbers on their claims:

  • 8% improvement in ads quality from Andromeda, and a 6% recall improvement to the retrieval system, on selected segments.
  • 22% increase in ROAS for advertisers who turned on Advantage+ creative's AI-driven targeting features, and an estimated 7% increase in conversions for businesses using image generation.
  • 9% lower cost per action on average with the streamlined setup for Advantage+ sales campaigns.
  • 11% higher click-through rate and 7.6% higher conversion rate on average for campaigns using image generation within Advantage+ creative.
  • 19% lower CPA on average for businesses using partnership ads.
  • A 7% increase in link clicks in one named case study using background image generation.

These are averages across Meta's advertiser base, published by the company that sells the features, and they measure adoption rather than creative strategy. Weigh them accordingly. But they are attributed, dated and findable, which the guides' numbers are not.

How many ads to run on Meta

  1. Use Meta's figure where Meta's figure applies. At least 20 diversified ads in an Advantage+ shopping campaign, 20–30% of budget on testing. Outside that campaign type, Meta has published nothing and neither has anyone else. To put a share of one campaign's budget behind new ads, Meta's tool is the creative test.
  2. Spend the effort on diversity. Describe each creative in one sentence without naming its format. If two sentences match, you have one creative twice, and your count is measuring production rather than diversification. The free creative diversity check groups the look-alikes in a batch of files.
  3. Treat cadence as a resourcing question. Meta frames it that way. Weekly is what the leaders manage, not a line you drop below.
  4. Be suspicious of any number attributed to Andromeda. It has two technical documents. If a claim about it is not in either, ask where it came from.

The broader pattern is the one that also runs through ad specs, safe zones and creative fatigue: a number gets repeated across articles with no link back to Meta. Here, Meta's real recommendation got overwritten by louder ones.

Sources

Meta revises and removes pages without notice. If a link has moved, re-check the claim rather than trusting this page.

Terrads generates ads that differ in theme, message and visual rather than in crop, with each placement composed for its own frame.