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Statsig is a feature-flagging, experimentation, and product-analytics platform founded in 2021 by Vijaye Raji and other former Meta engineers, drawing on internal tools Raji had used there like Gatekeeper and Deltoid. The platform powers feature rollouts and A/B testing for organizations including OpenAI, Notion, and Brex, and in September 2025 Statsig itself was acquired by OpenAI, with Raji becoming OpenAI's CTO of Applications.

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