OpenAI says Plus and Pro subscribers can use their existing plan allowance with 16 launch partners, including Vercel and Devin, via Sign in with ChatGPT (Paul Sawers/The New Stack)

OpenAI is extending ChatGPT Plus and Pro value beyond its own app by letting subscribers use their existing plan allowance in 16 third-party AI and coding tools through "Sign in with ChatGPT." For CIOs and technology leaders, this signals a shift toward a more connected AI ecosystem that can reduce user friction and accelerate adoption, but it also raises governance questions around identity, access control, usage visibility, and how AI spend is managed across vendors.