OpenAI, the artificial intelligence giant, announced that it will acquire Statsig, a product testing startup, in an all-stock transaction valued at USD 1.1 billion, marking one of OpenAI’s largest acquisitions to date.
According to OpenAI’s official blog, as part of the acquisition, Vijaye Raji, founder and CEO of Statsig, will join OpenAI as Chief Technology Officer of Applied, reporting directly to Fidji Simo, the former Instacart CEO who recently took over leadership of OpenAI’s applied product division. Raji will be responsible for overseeing product engineering for ChatGPT and Codex.
Founded in 2021, Statsig provides developers with tools for A/B testing, feature flagging, and real-time decision-making. Its clients include OpenAI, Eventbrite, and SoundCloud, among others. Earlier this year, the company raised USD 100 million in funding, reaching a valuation of USD 1.1 billion. OpenAI’s acquisition price matches this valuation, underscoring the company’s confidence in Statsig’s technological capabilities and strategic value.
In an official statement, Fidji Simo said that Raji’s addition will enable developers and enterprises to “build safe, empowering applications using OpenAI’s technology.” OpenAI also highlighted that the Statsig platform has played a pivotal role in enabling rapid product releases and iterations across the company’s ecosystem.
This acquisition comes amid a wave of large-scale deals by OpenAI. In July 2025, the company finalized a USD 6.5 billion all-stock acquisition of an AI hardware startup co-founded by former Apple design chief Jony Ive. OpenAI also previously considered a USD 3 billion acquisition of AI programming startup Windsurf, but the deal was eventually abandoned.
Behind this aggressive expansion lies OpenAI’s surging valuation. In March 2025, the company raised USD 40 billion in funding, bringing its overall valuation to USD 300 billion.