X Expands Open Source Codebase, Introduces Transparency Tool for Algorithm Impact

X is significantly expanding its open source codebase, including the app’s “For You” algorithm and core ranking engine, on GitHub under the Apache v2 license. A new transparency tool lets users see if their account/posts were impacted by ranking systems. The move aims to address concerns over algorithm transparency, especially regarding political influence and misinformation. External researchers tested the open-source code, successfully running X’s Phoenix scoring system. However, systems using Grok for rule-violation prediction are excluded to prevent spam exploitation. The changes come as X faces scrutiny over its algorithm’s impact on politics and misinformation, despite being a private company with reduced transparency in other areas like user metrics.