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Statsig

“Can a best-in-class product experimentation platform become the foundational measurement and feature-management layer for the world's leading AI application company?”

Founded2021
HQBellevue, WA (Seattle area), USA
FoundersVijaye Raji
Total raised$100M+
Latest roundSeries C, 2024
Valuation$1.1B (acquisition by OpenAI, September 2025)
IndustryInfrastructure / Payments
The story

Founded in 2021 by former Microsoft engineer Vijaye Raji, Statsig positioned itself as the experimentation-and-feature-management layer for modern product teams, competing with LaunchDarkly and Optimizely. The company grew to 150-169 employees and achieved unicorn status with a $1.1B Series C valuation by 2024. In September 2025, OpenAI acquired Statsig for $1.1 billion in an all-stock transaction, integrating its experimentation infrastructure into OpenAI's Applications business under Fidji Simo; Raji became CTO of Applications overseeing ChatGPT and Codex product engineering.

Last 12 months
2025-09
Product timeline
2021
Statsig founded by Vijaye Raji in the Seattle area as an experimentation and feature flagging platform for product teams.· pivot
2021
Statsig adopted Anrok for sales tax compliance early in its commercial lifecycle, before building a dedicated finance team.· banking
2024
Statsig raised a $100 million Series C at a $1.1 billion valuation; Stephen Praast joined as Head of Accounting and consolidated all corporate expenses onto Brex.· acquisition
2025
OpenAI agreed to acquire Statsig for $1.1 billion in an all-stock deal; founder Vijaye Raji appointed OpenAI CTO of Applications.· acquisition
The stack
0 layers disclosed in Statsig’s embedded-finance stack
Accounting gap: none