Facebook Andromeda update will Roll out in 2026

What is Andromeda?

Andromeda is Meta’s new advanced AI system used in ads retrieval — the first step where Meta selects the most relevant ads from millions of possibilities. It is designed to make ad targeting faster, smarter, and more personalized.

Why is it important?

Meta’s platforms (Facebook, Instagram) have millions of ads. Andromeda helps quickly pick the best ads for each person while keeping everything fast and efficient.

Key Challenges

1. Huge number of ads — Ads keep increasing because of automation and generative AI tools.
2. Very low latency — Ads must be selected in milliseconds, so the system must be extremely fast.

What Andromeda does better

• Uses NVIDIA Grace Hopper Superchip and Meta’s MTIA hardware for faster AI processing.
• Learns deeper relationships between people and ads using a powerful neural network.
• Improves retrieval performance by +6% recall and +8% ads quality.
• Handles massive ad growth from Advantage+ and generative AI (15M+ AI-made ads per month).
• Supports faster, more accurate ad selection using a smart hierarchical indexing system.

How it works (simple terms)

• It groups ads in a layered structure so it can quickly find the best options.
• It runs complex AI models that understand user behavior more deeply.
• It uses GPU-friendly design to make everything run faster.
• It adjusts model complexity automatically depending on the type of ad (model elasticity).

Benefits for advertisers

• More precise targeting
• Higher returns on ad spend (ROAS)
• Better use of AI-generated creatives
• Faster system performance (3x QPS improvement)

What’s next?

Meta plans to add autoregressive modeling (like in LLMs) to make ad selection even faster and more diverse. The system will also evolve with new hardware to reach 1,000x more model complexity in the future.