Two of the quieter announcements at DevDay do the same thing from opposite ends of the customer list: they turn money already committed to OpenAI into money spendable somewhere else.
The consumer half is Sign in with ChatGPT. Users can sign in to participating apps and sites with a ChatGPT account, and Plus and Pro subscribers can then choose to let that app use their ChatGPT plan for AI requests, with no API key created or shared. Eligible requests count against the ChatGPT Work and Codex usage included in the plan.
The controls are per app
OpenAI’s documentation is specific about the guardrails. A weekly usage limit can be set for each app, and app usage is reviewable in ChatGPT settings. If a user reaches their plan limits, an app can also draw on available ChatGPT credits, but only if the user has explicitly allowed apps to use credits. The app may still charge separately for its own subscription, infrastructure, services or premium features, so this substitutes for the inference bill, not the product bill.
Access is split. Anyone can connect their account to supported open-source tools; only Plus and Pro users can connect to eligible commercial ones. Identity is available globally, while plan usage is limited to Plus and Pro in participating tools. OpenAI names 16 partners at launch, among them Cognition’s Devin, Notion, Vercel, T3, OpenClaw and Dactyl.
The enterprise half is larger
The OpenAI Marketplace applies the same logic to contracts. Eligible enterprise customers can put part of an existing OpenAI commitment toward approved partner software. The first cohort is 32 companies, and the published directory includes Figma for design; Adobe, Sierra, Decagon, HubSpot, Salesforce and ServiceNow for customer experience; Harvey and Legora for legal; Palo Alto Networks and CrowdStrike for security; and Baseten for open-source model serving, alongside Datadog, Glean, Replit, Runway, Ramp, Manus, Lovable, ElevenLabs, Hex, Rogo and others.
That is a procurement instrument. A company that has committed a large sum to OpenAI can now discharge part of it by buying software from a vendor OpenAI has approved, which makes the commitment easier to sign and harder to walk away from.
What it means for the partners
For the 16 consumer partners, the offer removes the most awkward step in onboarding a developer tool: nobody has to create an API key or enter a card before the product works. For the 32 enterprise partners, being on the list is a distribution channel into budgets that are already allocated.
The cost on both sides is the same. The subscription becomes the unit of account, and the vendor’s relationship with its customer now passes through OpenAI’s ledger. A partner that is removed from the marketplace, or from the participating-apps directory, loses that channel without any change to its own product.
What to watch
The terms are not public. OpenAI has not said what share of a commitment can be applied to partner software, how partners are approved, or what the revenue split is on a plan-funded request in a third-party app. Those three numbers decide whether this is a distribution favour or a toll booth, and none of them is in the documentation.
