| Open-source ranking shape | The xAI X algorithm repository describes in-network and out-of-network retrieval, a Phoenix retrieval model, candidate hydration, filtering, scoring, and author diversity. | Distribution is a pipeline, not a single chronological feed. | Design content that can be retrieved for a topic and understood without follower context. |
| Predicted actions | The published scorer includes probabilities for favorite, reply, repost, quote, click, profile click, video view, photo expand, share, dwell, follow, not interested, block, mute, and report. | Different forms of attention and rejection can affect predicted value; exact weights are private. | Optimize for useful reading, response, and profile action, not likes alone. |
| For You recommendations | X says For You can show posts from accounts a person does not follow, based partly on popularity and network interaction. | Network adjacency is only one path to discovery. | Use complete context and clear topic language so out-of-network readers can classify the value. |
| Top search | X says Top results use popularity, interaction or sharing through reposts and replies, keywords, and other factors; Latest remains chronological. | Search rewards relevance plus evidence of public usefulness. | Write a durable first post and build qualified discussion around it. |
| Search eligibility | X says protected accounts, unconfirmed email, sensitive content, and posts that do not contribute meaningfully can limit search visibility. | Technical and trust hygiene are part of discoverability. | Complete the account, keep it public where appropriate, and review safety and quality signals. |
| Topic systems | X says Topics use algorithms, keywords, and additional signals, with filters for spam and manipulated engagement. | A topic label is a relevance aid, not a substitute for expertise. | Participate in a few durable topics with original examples and credible replies. |
| Video destination | X has described a full-screen Video Tab built around trends, top creators, premium content, and live events. | Video can travel in a destination beyond the text timeline. | Use video for explanation and proof, then preserve the answer in text and on the site. |
| Long-form formats | X Premium offers longer posts and Articles; longer formats are optional features, not universal ranking guarantees. | Depth is useful when the conversation needs it. | Choose a thread or Article because it improves comprehension, not because it is longer. |