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# Meta’s Generative Ads Model (GEM): Scaling the Central Model and Compute Engine for Frontier Ads AI

**[Facebook Engineering
](https://daily.dev/sources/facebook_code)** · 16 min read · 0 upvotes · 0 comments

## Summary

Meta details the 2026 generation of its Generative Ads Model (GEM), a unified foundation model replacing per-surface ad prediction systems across Facebook, Instagram, and Reels. The new Kunlun architecture enables 2.5x model complexity growth with LLM-like scaling laws, while post-training techniques (LoopFM, Solaris) double intelligence transfer to downstream models without added latency. A new training recipe supports cross-surface, cross-domain learning, and infrastructure improvements doubled end-to-end training efficiency to 20-25% MFU while scaling total training FLOPs 4x. Reported gains include 18.9% conversion improvement and 12% CTR improvement across Meta's ad surfaces over the past year.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://engineering.fb.com/2026/10/13/ml-applications/metas-generative-ads-model-gem-scaling-the-central-model-and-compute-engine-for-frontier-ads-ai>

## Questions this post answers

### What architecture does Meta's GEM ads model use to achieve LLM-like scaling for recommendation systems?

Meta's GEM uses a custom LLM-style architecture called Kunlun, co-designed with the latest GPU hardware, which delivers 2x performance gains over the prior Interformer architecture at the same compute scale. It achieves 2.5x model complexity growth and enables long-context learning over user engagement history through block attention, generalized dot-product attention, and mixture-of-experts style cross-interaction.

_Engineers scaling recommendation systems can track architecture innovations like Kunlun through daily.dev._

### How does Meta transfer knowledge from a large foundation model to real-time ad serving models without added latency?

Meta uses a post-training technique called Solaris that speculatively precomputes user-ad embeddings before a live ad request needs them, borrowing the idea of speculative decoding from LLM serving. Combined with a structured representation technique called LoopFM, this doubles intelligence transfer effectiveness beyond standard knowledge distillation at no additional compute cost or latency.

_Teams balancing model intelligence against serving latency can follow techniques like this on daily.dev._

### What GPU training efficiency did Meta achieve for its GEM ads recommendation foundation model?

Meta doubled end-to-end training efficiency to 20-25% model FLOPS utilization (MFU) while scaling total training FLOPs by 4x over twelve months. This came from custom low-precision kernels (including MXFP8 attention and MLP), new 5D parallelism strategies, and topology-aware networking co-designed together across thousands of GPUs.

_Developers optimizing GPU training throughput at scale can follow infrastructure deep dives like this on daily.dev._

## Similar posts on daily.dev

- [Meta’s Generative Ads Model \(GEM\): The Central Brain Accelerating Ads Recommendation AI Innovation](https://daily.dev/posts/meta-s-generative-ads-model-gem-the-central-brain-accelerating-ads-recommendation-ai-innovation-jduz74tbf) · Facebook Engineering
 · 1 upvotes · 0 comments
- [How Meta Built a New AI-Powered Ads Model for 5% Better Conversions](https://daily.dev/posts/how-meta-built-a-new-ai-powered-ads-model-for-5-better-conversions-plmz0bqth) · ByteByteGo · 0 upvotes · 0 comments
- [Meta Details GEM Ads Model Using LLM-Scale Training, Hybrid Parallelism, and Knowledge Transfer](https://daily.dev/posts/meta-details-gem-ads-model-using-llm-scale-training-hybrid-parallelism-and-knowledge-transfer-21ryza9tt) · InfoQ · 0 upvotes · 0 comments
- [GEM Training: How Meta Doubled the Efficiency of Its LLM-Scale Ads Foundation Model](https://daily.dev/posts/gem-training-how-meta-doubled-the-efficiency-of-its-llm-scale-ads-foundation-model-yuawarr3a) · Facebook Engineering
 · 2 upvotes · 0 comments
- [Welcome Gemma 4: Frontier multimodal intelligence on device](https://daily.dev/posts/welcome-gemma-4-frontier-multimodal-intelligence-on-device-mkjiapoth) · Hugging Face · 8 upvotes · 3 comments

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