What We Know About Meta Andromeda After 6 Months

Contents

You are running campaigns on Facebook or Instagram. The audience is well set up, the audiences are carefully built, the lookalikes are running, and results are still dropping. The agency says "the market is more competitive" and you think maybe the targeting is not precise enough, while the budget keeps burning.

The problem is not the audience you selected. It is that audience targeting no longer exists as the main lever. From October 2025, Meta completed the global rollout of Andromeda, a completely new system that changed how ads are selected and distributed on Facebook and Instagram (1). And most advertisers have not figured it out yet.

The House's New Way of Dealing the Cards

For years, advertising on Meta meant one thing: finding the right audience. Interests, lookalikes, custom audiences, retargeting. Everything revolved around the question "who do I want to show this ad to?"

The most common mistake today is continuing to optimise around that question while the system has stopped listening to it (2).

Andromeda operates before the ad auction even begins. When Meta needs to decide which ads to show a user, the old system scanned the targeting parameters you had set. The new system, instead, reads the content of your ad directly, image, text, tone, colours, format, and decides independently who it might be relevant to. Only the ads that pass this filter enter the actual auction (3).

Your targeting does not disappear, but it becomes one more signal for the system. According to Meta, if the creative is more suitable for a different audience than the one you selected, Meta prioritises the creative because that is what makes the real difference in user action (4).

Andromeda works alongside GEM, the Global Earnings Model, which handles ranking and pricing in the auction. The two systems together determine who (audience) sees what (creative), at what cost. Andromeda is not a new auction and pricing system, but a "match" system between user and ad (5). We are clarifying this just because some people can get confused, even though it is not vital to know, and nobody will probably ever ask you about it.

In short: targeting has become a contextual signal, not a determining filter. The real targeting is now done by the creative and by whoever communicates most effectively according to Meta.

The Numbers That Change the Strategy

Andromeda is not just a technical update. It increased the complexity of the model by 10,000 times compared to the previous system. That is not a typo: ten thousand times. Meta built a dedicated hardware infrastructure, including the NVIDIA Grace Hopper Superchip, to support this leap in scale (1).

Results declared by Meta: +14% in ad quality on Facebook and a 22% increase in ROAS for those who adopted the Advantage+ creative features that work alongside Andromeda (6).

In the field, agency data paints a more nuanced picture. Hawke Media reports that Advantage+ campaigns now account for 60-70% of their clients' Meta spend. But they add that the system tends to direct spend toward "low-quality placements" when left unmonitored (6).

An agency like The Charles Group calculated that for a single creative brief, once developed across four different personas with five concepts each, the result was 1,000 creative assets produced for a single campaign (6). Not minimal variations of the same ad. Completely different concepts, each with its own narrative angle.

Here is the key point: advertisers who produce creatives with diversity of concept rather than graphic variations see conversions between 8% and 17% higher compared to those who have not adapted different concepts or creatives, keeping the same approach throughout (3).

Verified fun fact: Meta built a system that processes over 15 million new ads per month from advertisers. To handle this volume, the old system had already structurally collapsed before the launch of Andromeda. The crisis was not one of budget, it was one of architecture (4).

What to Do Now, Concretely

The good news is that you do not need to restructure the entire account tomorrow morning. You need to change the starting question.

First. Stop optimising the audience and start optimising the concept. The question is no longer "who do I want to reach?" but "what am I saying, and in how many different ways can I say it?" Andromeda rewards diversity of concept, not cosmetic variations of the same ad. A colour or font change does not create diversity for the system. Change the problem you are solving, the tone, the format, the character who is speaking (2).

Second. Simplify the account structure. Andromeda works best when it has more signals to read within a single container. Fragmenting the budget across dozens of separate campaigns reduces the density of data the algorithm uses to learn. The model Meta is pushing (again, not an absolute rule but a starting point for something that will certainly change in the future) is (7):

• one campaign;

• very few ad sets;

• lots and lots of creatives.

Third. Note that Meta has confirmed that those who disable AI features are not penalised in delivery. But it has also clarified that "if manual controls exceed certain limits, the campaign may signal the deactivation of Advantage+, reducing some of the automation benefits." In practice: you can keep control, but you need to know where to apply it and where to let go (6).

The result of not adapting is not immediate. It is a slow deterioration in performance while others, those who have understood how the new system works, gain ground.

Welcome to the New Wild West of Paid Social

Understanding every update from Meta, Google, TikTok and everything else in the spare time left between meetings and reports is objectively impossible. But ignoring a change that has redesigned how the main advertising tool for billions of people works is not a sustainable option in the long run.

Those who update in time, even just by understanding the basic principle behind Andromeda, already have a real advantage over those who are still building detailed audiences as if it were 2021. Not because they are more skilled, but because they are playing by the updated rules while others are still using the old manual.

The house is dealing cards from a new deck but the rules are practically identical to before. I have never played traditional poker, the kind with five cards in hand, but I have always played Texas Hold'em and from what people tell me, it is pretty much the same thing.

Whether poker is a safer investment than social media ads... I would almost say yes. Unfortunately, we are at this table to win, not to be entertained. It is part of the game and you cannot just get up from the chair.

That wretched chair.

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Sourses

1. Engineering at Meta (2024) - Andromeda: Supercharging Advantage+ automation with the next-gen personalized ads retrieval engine https://engineering.fb.com/2024/12/02/production-engineering/meta-andromeda-advantage-automation-next-gen-personalized-ads-retrieval-engine/

2. Search Engine Land (2026) - Inside Meta's AI-driven advertising system: How Andromeda and GEM work together https://searchengineland.com/meta-ai-driven-advertising-system-andromeda-gem-468020

3. Confect.io (2026) - Meta Andromeda: The ultimate guide to Meta Ads in 2026 https://confect.io/tactics/meta-andromeda-2026

4. Scaledon (2026) - Meta Andromeda Creatives: The Data Behind The Biggest Ad Strategy Shift In 2026 https://scaledon.com/meta-andromeda-creatives-the-data-behind-the-biggest-ad-strategy-shift-in-2026/

5. Affectgroup (2026) - 2026 Meta Ads Algorithms: Andromeda Explained https://affectgroup.com/blog/andromeda-2026-how-meta-ads-algorithms-now-deliver-our-ads/

6. Marketing Brew / Morning Brew (2026) - How Meta's AI push is changing ad creation https://www.marketingbrew.com/stories/2026/04/07/meta-ai-ad-creation

7. Jetfuel Agency (2026) - Meta's 2026 Algorithm Update: What Andromeda Changed and How to Adapt Your Ads https://jetfuel.agency/meta-algorithm-changes-2026-andromeda/