Social media firm Bluesky has confirmed the details of its $100 million Series B funding round as it enters a new phase of growth. The investment was led by Bain Capital Crypto in April 2025. Other participants included Alumni Ventures, Anthos Capital, Bloomberg Beta, Knight Foundation and True Ventures. The company is using the capital to scale its workforce and manage the significant increase in activity on the AT Protocol (atproto) and its main application.

The funding round was led by Bluesky founder Jay Graber. She has recently moved into the role of Chief Innovation Officer to concentrate on the development of open social infrastructure. This leadership transition follows a period of intense growth for the platform. Since the announcement of its Series A in October 2024, the global user count has risen from 13 million to more than 43 million.

Data released by the company shows that the ecosystem of builders and applications, known as “The Atmosphere”, is expanding rapidly. Users currently interact with over a thousand apps built on the atproto system every week. Furthermore, there are more than 400,000 SDK downloads recorded each month. The ecosystem now contains approximately 20 billion public records. These include posts, likes and comments that constitute the digital life of the network.

The firm stated that this capital provides a strong base for the future of the open social web. The management team noted that the investment allows for progress without changing the core mission of the organization. As the platform moves forward, the focus remains on supporting the developers and users who contribute to the decentralized network. The company described the current state of the ecosystem as “an astonishing collection of what open social infrastructure makes possible.”