Bluesky 2025 Transparency Report

Summary

Throughout 2025, our Trust & Safety work was guided by the premise that social media should serve the people using it. That means reducing exposure to toxic content, protecting young people while respecting privacy, and building systems that can respond quickly to emerging harms. Our moderation systems scaled to ably manage large, event-driven volumes, and we invested heavily in regulatory readiness, safety systems, and product improvements that strengthen Bluesky and the entire AT Protocol ecosystem. Our transparency report provides data and details about those investments, and the progress we made this year. Overview Bluesky grew nearly 60% in 2025, from 25.94M to 41.41M users. This includes accounts hosted on Bluesky's infrastructure, as well as the thousands of Personal Data Servers operated by people across the federated AT Protocol network, with the majority hosted independently by third parties. This decentralized architecture remains core to our mission of transitioning the social web from platforms to protocols, giving users genuine control over their data and experience. The growth in our user base came alongside a dramatic expansion in site activity. Users created 1.41 billion posts during 2025—representing 61% of all posts ever made on Bluesky. Media sharing surged, with 235M posts containing photos, videos, or other media in 2025, accounting for 62% of all media posts in the site's history. As the largest host of accounts and default port of entry for people joining Bluesky, we maintained 24/7 moderation operations throughout 2025, with specialized teams focused on critical areas like child safety. Moderation at scale requires a hybrid approach: We pair automated systems (like rules engines that detect and combat spam in real time) with comprehensive human oversight, including human review of all appeals and edge cases. Our work in 2025 concentrated on five key areas: proactive content moderation, age assurance across multiple jurisdictions, enhancing p...