LinkedIn Algorithm & 360Brew

LinkedIn replaced thousands of specialized ranking models with one massive AI system called 360Brew — a 150-billion parameter language model, the same technology class that powers ChatGPT, but trained specifically on professional network data. The introduction of 360Brew is not an iterative update to ranking logic — it replaces the platform's central nervous system, shifting from a deterministic calculator of user actions to a probabilistic reasoner of user intent.

LinkedIn published the 360Brew research paper in January 2025, describing a "pre-production model V1.0" developed over 9 months. They have not announced deployment percentages or which surfaces are fully using it — but creators started reporting visibility changes in summer 2024, which is LinkedIn's typical pattern of quiet, gradual A/B testing. Current educated estimate: 40–100% deployed across different feed surfaces.

360Brew assesses content based on four key pillars — the first being Profile Coherence: whether a post aligns with a creator's professional identity and expertise. The "360" refers to a full, holistic view of professional activity — posts, comments, profile, and network all count. The "Brew" aspect is how the AI blends hundreds of signals (timing, relevance, relationships). It doesn't just scan keywords — it understands the meaning behind words.

360Brew creates a temporary "personalized version" of the model for each viewer by analysing their last 2–3 months of activity. The research calls this "many-shot in-context learning" — meaning the algorithm learns what a specific user considers valuable, then applies that understanding.

Looking ahead, 360Brew may evolve toward a state where users do not browse a feed — an AI agent curates on demand. Some analyses argue the model is becoming more format-agnostic over time, increasingly prioritizing information density over container. Marketers should choose the format that best conveys information, not the format that once gamed distribution.

The 360Brew update significantly reduces the importance of posting frequency. This shift allows busy professionals to focus on developing thoughtful, well-researched content rather than rushing to maintain an aggressive posting schedule. Posting more often will not automatically get more reach. 360Brew is far more interested in whether content is relevant than whether you are posting every day. It is recommended to focus on a few core topics rather than a broad spectrum — this helps the algorithm understand who you are and who should be seeing your content.

Many users report reach decreases of 30–50% following the 360Brew update. This reduction stems from two primary factors: more precise targeting (content is shown to more relevant — but narrower — audiences) and algorithm confusion about users with inconsistent profiles or content patterns.