San Francisco, California - Sep 02, 2025 (UTC) - OpenAI announced it has agreed to acquire product testing startup Statsig for $1.1 billion in an all-stock deal, marking one of the largest acquisitions in the ChatGPT maker’s history while simultaneously reshuffling its leadership team to strengthen its applications business.
The acquisition brings Statsig founder and CEO Vijaye Raji to OpenAI as CTO of Applications, where he will report to former Instacart CEO Fidji Simo, who recently joined OpenAI to lead the Applications business. Raji will head product engineering for ChatGPT, the company’s AI coding tool Codex, and future applications that OpenAI plans to build.
The deal, valued under OpenAI’s current $300 billion valuation, represents OpenAI’s latest effort to build out its Applications organization. Statsig provides A/B testing, feature flagging, and real-time decisioning services for companies, including OpenAI itself, and the company says bringing the experimentation platform in-house will accelerate product development across the Applications organization.
The acquisition is accompanied by significant leadership changes at OpenAI. Chief Product Officer Kevin Weil announced he will become VP of a new group called OpenAI for Science, focusing on building “the next great scientific instrument: an AI-powered platform that accelerates scientific discovery.” Weil will work closely with Sebastien Bubeck, an OpenAI researcher and former VP of AI and Distinguished Scientist at Microsoft.
“I’m able to do this because the product and design leaders at OpenAI are amazing, and now are complemented by Fidji Simo beginning her role as CEO of Applications,” Weil said. “OpenAI’s products have been my life since I joined, and they’re in great hands.”
Meanwhile, OpenAI’s current head of engineering, Srinivas Narayanan, announced he would transition to a new role as CTO of B2B applications, where he will collaborate directly with OpenAI’s COO Brad Lightcap, who oversees many of the company’s relationships with enterprise customers.
The Statsig acquisition is pending regulatory review, and once completed, all Statsig employees will become OpenAI employees. However, the Seattle-based product testing startup will “continue operating independently and serving its customer base out of its Seattle office,” according to OpenAI’s blog post.
Statsig, which has been backed by investors including Sequoia Capital, provides experimentation and product optimization tools that help companies make data-driven decisions about product features and user experiences. The company’s platform enables A/B testing at scale, allowing organizations to test product changes with statistical rigor before full deployment.
The deal highlights OpenAI’s growing focus on productizing its AI capabilities for both consumer and enterprise markets. Under Simo’s leadership, the Applications business is expected to play a crucial role in OpenAI’s commercial strategy as the company seeks to monetize its advanced AI models through user-facing products and enterprise solutions.
The acquisition comes as OpenAI continues to expand its product portfolio beyond ChatGPT, including developer tools, API services, and enterprise-focused AI solutions. By bringing Statsig’s experimentation capabilities in-house, OpenAI aims to accelerate the development and optimization of these products while maintaining its rapid pace of innovation.
The leadership reshuffle reflects OpenAI’s evolution from a research organization to a comprehensive AI company serving multiple market segments. The creation of specialized divisions for applications, B2B services, and scientific research demonstrates the company’s strategic approach to scaling its operations and impact across different domains.
About OpenAI
OpenAI is an artificial intelligence research and deployment company founded in 2015 with the mission to ensure that artificial general intelligence benefits all of humanity. The company is best known for ChatGPT, GPT-4, and other advanced AI models, and operates both research and commercial divisions. Based in San Francisco, OpenAI serves millions of users through its consumer applications and provides AI services to thousands of enterprise customers through its API and specialized products. The company is valued at approximately $300 billion and continues to be a leader in AI research and product development.
