OpenAI announced the acquisition of Statsig, a Seattle-based product experimentation platform, in an all-stock deal valued at $1.1 billion. The agreement, which is subject to regulatory approval, makes Statsig one of the most significant purchases in OpenAI’s history and adds another major transaction to its growing list of acquisitions.
As part of the deal, Statsig’s founder and CEO Vijaye Raji will join OpenAI as Chief Technology Officer of Applications, reporting to Fidji Simo, CEO of the company’s Applications division. Raji will oversee engineering for ChatGPT and Codex, with responsibilities extending across core systems, infrastructure, and integrity.
Leadership Changes
OpenAI is coupling the Statsig acquisition with a significant reshaping of its leadership team. Fidji Simo, who took charge of OpenAI’s Applications division earlier this year, welcomed Raji’s appointment by pointing to his track record across both consumer and enterprise technology. She described him as a leader with “a remarkable record of building new consumer and B2B products and systems at scale,” adding that his experience will be central to developing “safe applications that empower people, help companies increase their impact, and allow developers to build faster and better products.”
For Raji, the move represents both continuity and expansion. After nearly a decade each at Microsoft and Meta, he launched Statsig in 2021 to bring large-scale experimentation tools to a wider audience. Reflecting on the transition, he called the new role “an extraordinary opportunity to bring my experience scaling consumer and enterprise products to a mission I deeply believe in.” The Statsig journey, he added, “has been deeply gratifying, leading me to this moment and giving me conviction that we will continue helping teams ship better software every day.”
The changes extend beyond Raji’s appointment. OpenAI announced that Kevin Weil, the company’s Chief Product Officer, will head a newly created division called AI for Science. Srinivas Narayanan, formerly Vice President of Engineering, will step into the role of CTO of B2B Applications. Meanwhile, product leaders Nick Turley, Ashley Alexander, and Ian Silber will now report directly to Simo, consolidating oversight of OpenAI’s applications portfolio under her leadership.
Statsig’s Growth
Statsig was founded in February 2021 with the goal of bringing advanced experimentation and feature management tools to product teams of all sizes. Drawing from Raji’s experience at Meta, where internal systems like Gatekeeper and Deltoid powered rapid product testing, Statsig built a commercial platform to make these capabilities widely available.
The company has since expanded into a unified product development suite covering A/B testing, feature flags, product analytics, session replays, marketing experiments, and web analytics. Powered by a warehouse-native architecture, the platform processes over one trillion events daily, supports 2.5 billion monthly experiment subjects, and delivers 99.99% uptime.
Statsig’s customer base includes Atlassian, Notion, Brex, Bloomberg, SoundCloud, and OpenAI itself. Over the past four and a half years, it has become one of the most widely adopted platforms for experimentation and data-informed product development.
“Over the past 4.5 years, we’ve built something special at Statsig: a platform that the world’s best technology companies rely on to build fast and make smart decisions,” Raji wrote in a LinkedIn post. “Now, we get to carry that vision forward as part of OpenAI.”
Statsig’s path to OpenAI was not its first encounter with acquisition offers. Earlier in 2025, Datadog approached Statsig for a potential purchase, but talks did not result in a deal. Instead, Datadog went on to acquire Eppo, a Statsig rival, for $220 million.
In an exclusive conversation with AIM Media House, Raji explained the company’s reasoning at the time. “Our focus was always on determining the best way to realize our vision,” he said. “The goal is to build the default product stack for every company that ships software and not just serve as an add-on to observability.”
That decision led Statsig to raise a $100 million Series C round, with $80 million allocated to growth capital and $20 million directed to secondary liquidity for employees. “We’ve been fortunate to have people who took a bet on us early and stuck with us,” Raji noted. “Giving them a chance to realize some of that value was the right thing to do.”
Continuity for Customers
In its announcement, Statsig reiterated its focus on customers:
“Our mission has always been to help product teams build smarter and faster. Now, we get to carry that vision forward as part of OpenAI. We’re going to join forces to vastly expand our mission, while maintaining continuity for our current customers.”
Statsig confirmed that it will continue to provide services for its existing customer base and invest in its core products. For its employees, the acquisition represents both a transition to OpenAI and a continuation of the work they started in 2021 which was building tools that accelerate how teams develop and ship software.
Though Raji had earlier told AIM Media House that, “I don’t want to go to a large company. I don’t want to go to a startup. I want to do my own,” the acquisition brings his company and team into OpenAI’s fold.
