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X Algorithm Growth Hacking
On Trove · from Matan Marudi

X Algorithm Growth Hacking

A Complete Guide Based on the Open-Source Code

A definitive, tactical reference book for growing on X in 2026, based on the open-sourced Grok-based ranking algorithm.

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  • By Matan Marudi
  • 14 chapters
  • Updated Nov 2, 2026
  • 33 readers

What’s inside

  • X Algorithm Growth Hacking — Router
  • How the X Algorithm Actually Works (The Engine Under the Hood)
  • The Scoring Formula — What the Algorithm Actually Measures
  • Time Decay — Why the First Hour is Everything
  • Content Signals — What the Algorithm Rewards and Penalizes
  • Account Health — TweepCred and Distribution Baseline

What is X Algorithm Growth Hacking?

A definitive, tactical reference book for growing on X in 2026, based on the open-sourced Grok-based ranking algorithm. Covers the scoring formula, engagement weights, out-of-network discovery, 12 high-impact strategies, myth-busting, and a 30-day growth sprint.

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markdown · Listed May 17, 2026

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From the first page

Audience & governance: Marketplace (public) reference book. Sources are attributed to the open-source repo xai-org/x-algorithm and named secondary analyses (see Currency & Sources page). Where a number is the author's inference rather than code-confirmed, it is marked as such.

Scope of validity: Built on the xai-org/x-algorithm open-source release (first published 2026-01-20; major update 2026-05-15). xAI ships updates on a 4-week cadence, so treat weight values and feature lists as point-in-time. Last reviewed: 2026-06-14. Refresh cadence: every 4 weeks against the repo changelog.

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Contents

  1. 01X Algorithm Growth Hacking — Routerp.1
  2. 02Decision Matrixp.2
  3. 03How the X Algorithm Actually Works (The Engine Under the Hood)p.3
    1. The Three-Stage Pipelinep.3
    2. Two Candidate Sources: Thunder and Phoenixp.3
    3. No Hand-Engineered Featuresp.3
    4. The Scoring Formulap.3
    5. The Last ~127 Interactionsp.3
    6. Agent rulesp.3
  4. 04The Scoring Formula — What the Algorithm Actually Measuresp.4
    1. The 15 Predicted Actionsp.4
    2. The Engagement Weights Tablep.4
    3. The 150x Conversation Multiplierp.4
    4. Dwell Time: The Hidden Kingp.4
    5. Author Diversity Scorerp.4
    6. The Negative Weights Realityp.4
    7. Agent rulesp.4
  5. 05Time Decay — Why the First Hour is Everythingp.5
    1. The Test Windowp.5
    2. Why the First 30 Minutes Are Sacredp.5
    3. Late Amplification (and Why It Is Rare)p.5
    4. Best Posting Windowsp.5
    5. Threads and the Extended Windowp.5
    6. Agent rulesp.5
  6. 06Content Signals — What the Algorithm Rewards and Penalizesp.6
    1. What the Algorithm Rewardsp.6
    2. What the Algorithm Penalizesp.6
    3. The Tone Modelp.6
    4. Agent rulesp.6
  7. 07Account Health — TweepCred and Distribution Baselinep.7
    1. What TweepCred Measuresp.7
    2. The 65 Thresholdp.7
    3. X Premium and TweepCredp.7
    4. Sentiment Analysis at the Account Levelp.7
    5. Active vs. Passive Accountsp.7
    6. Follower Engagement Loopsp.7
    7. Agent rulesp.7
  8. 08The Out-of-Network Discovery Engine — How to Get Shown to Non-Followersp.8
    1. The Two-Tower Model in Detailp.8
    2. Niche Beats Broadp.8
    3. Topic Coherence Builds the Fingerprintp.8
    4. Your Engagement History Shapes Your Match Poolp.8
    5. How to Optimize for Phoenix Discoveryp.8
    6. Agent rulesp.8
See all 14 parts
  1. 09The Complete Tactical Playbook — 12 High-Impact Strategiesp.9
    1. Strategy 1: Design Every Post for Repliesp.9
    2. Strategy 2: Reply to Every Reply in the First 30 Minutesp.9
    3. Strategy 3: Never Put Links in the Main Postp.9
    4. Strategy 4: Use the Thread Format for High-Dwell Contentp.9
    5. Strategy 5: Post at Velocity Windowsp.9
    6. Strategy 6: Seed Engagement Before Publishingp.9
    7. Strategy 7: Use Video — Even Rough Videop.9
    8. Strategy 8: Create "Quotable" Contentp.9
    9. +5 more sections
  2. 10Common Myths Debunkedp.10
    1. Myth: The algorithm suppresses small accounts.p.10
    2. Myth: Posting more = more reach.p.10
    3. Myth: Hashtags help discovery.p.10
    4. Myth: Deleting and reposting resets the algorithm.p.10
    5. Myth: Scheduling tools hurt you.p.10
    6. Myth: The algorithm changes every week.p.10
    7. Myth: Only Premium accounts can grow.p.10
    8. Myth: Going viral makes your account.p.10
    9. +2 more sections
  3. 11The Writing Process — X Posts That Beat the Algorithmp.11
    1. The Anatomy of an Algorithm-Optimized Postp.11
    2. Five Post Templates That Score Highp.11
    3. The 5-Minute Pre-Post Checklistp.11
    4. What to Do in the First 30 Minutes After Publishingp.11
  4. 12The Playbook in Practice — 30-Day Growth Sprintp.12
    1. Week 1: Foundationp.12
    2. Week 2: Optimizationp.12
    3. Week 3: Amplificationp.12
    4. Week 4: Compoundingp.12
    5. Key Metrics to Track Throughoutp.12
    6. Closing: The One Sentence That Mattersp.12
  5. 13Currency, Sources & What's Code-Confirmedp.13
    1. Repository overviewp.13
    2. Confirmed in the open-source codep.13
    3. NOT in the open source (community estimates — do not cite as code)p.13
    4. Corrections logp.13
    5. Primary sourcesp.13
    6. Refresh cadencep.13
  6. 14Promptable Feeds (New in 2025-2026)p.14
    1. Narrativep.14
    2. Agent rulesp.14
    3. Sourcesp.14