Meta Andromeda Upgrade: What It Means for Your Ads
In short: On 28 October 2026 Meta described a new mixture-of-experts, GPU-optimised version of Andromeda, its ads retrieval system. Meta says it can evaluate more than one billion eligible ads per second in production, about 100 times its 2024 throughput, and links Andromeda improvements to a 2.4% rise in Facebook conversions since 2025. That is a platform-wide figure, not a promise for your account, and there is no new setting to switch on.
- Andromeda is the stage that picks which ads are even considered for a person. Meta says the new version scales it to over one billion ads per second.
- The 2.4% Facebook conversion increase since 2025 is a Meta-reported aggregate, not an advertiser-level guarantee.
- There is no new Ads Manager toggle. The practical levers are differentiated creative, reliable conversion signals and clean catalogs.
- Treat the announcement as context for good account hygiene, not as a reason to restructure campaigns.
What Meta announced
In an engineering post on 28 October 2026, Meta described a new generation of Andromeda, the system that retrieves candidate ads before the final auction ranking. The new design uses a mixture-of-experts model optimised for GPUs. Meta says it can evaluate more than one billion eligible ads per second in production, around 100 times its 2024 throughput.
Meta also says Andromeda improvements have contributed to a 2.4% increase in Facebook conversions since 2025. This is a platform-reported aggregate across advertisers. Your own results can be higher, lower or unchanged.
What it means in plain English
Before an auction, the system has to decide which few ads out of a huge pool are worth considering for a particular person. A faster, larger retrieval model can look at more candidates and judge them more precisely. For advertisers, the likely effect is that the quality of your inputs matters more, because the system has better ability to find who each ad suits.
What to do about it
- Differentiate your creative. Ads that look and say the same thing compete with each other. Test genuinely different hooks, formats and offers instead of small colour or text changes.
- Protect your conversion signals. Send clean Pixel and Conversions API events with deduplication, and optimise for events that matter to your business, such as qualified leads or purchases.
- Keep catalogs healthy. For ecommerce, correct prices, availability, images and product attributes help the system match products to people.
- Avoid over-segmenting. Many tiny ad sets split learning and budget. Give campaigns enough data to work with.
- Judge on cost per result. Compare cost per qualified lead or sale over a few weeks. Do not react to one day's numbers.
What not to conclude
- It does not mean your costs will fall. Our guide to Meta ad costs explains why platform-wide figures rarely match one account.
- It does not mean you should rebuild campaigns. There is no Andromeda setting to enable.
- It does not replace testing. Your own data decides what works.
If you want a second opinion on how your Meta account is set up, ask for a free account review or read about our Meta Ads management.
Sources
- Meta Andromeda: next-generation ads retrieval with GPU co-design · Meta Engineering
Facts in this article come from the sources above, checked on 29 October 2026. Platform features roll out in phases, so check your own account before acting. We update this page when official details change.