Observed Signal · Sep 30, 2026 · Product Launch · Source: Trending Topics (DACH/CEE Innovation & Tech) · Impact: 4/5 · Sentiment: Positive
OpenAI Launches Sign in with ChatGPT with Subscription Sharing
OpenAI launched 'Sign in with ChatGPT' at DevDay, allowing users to log into third-party apps with their ChatGPT account and optionally share their ChatGPT Plus or Pro subscription quota. This feature, initially beta-tested since July with partners like Airtable, GitLab, HubSpot, Notion, Supabase, and Vercel, is now generally available with 16 launch partners, mostly AI coding tools including Devin, Warp, and Kilo Code. Apps receive only basic profile data (name, email, profile picture), while OpenAI collects account details, email, app info, IP address, and device identifiers for authentication and fraud prevention. The move positions OpenAI as a central identity provider and AI budget allocator, competing with Apple and Google, while rivals Anthropic and Google do not offer similar integrations.
OpenAI's sign-in feature and subscription sharing could reshape digital identity and AI budget allocation in the AdTech ecosystem, potentially impacting user authentication and third-party app integration.
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Key Takeaways & Evidence Grounding
- OpenAI launched 'Sign in with ChatGPT' at DevDay with 16 launch partners.
- The feature allows Plus and Pro users to share their subscription quota with partner apps, with usage limits set per app.
- Beta since July, now generally available with partners like Airtable, GitLab, HubSpot, Notion, Supabase, and Vercel.
- Apps receive only name, email, and profile picture; OpenAI processes account IDs, email, IP address, and device identifiers.
- Anthropic and Google do not offer similar login or plan-sharing integrations with ChatGPT.
Connected Companies & Entities
10 Entities mapped“OpenAI introduced 'Sign in with ChatGPT' at DevDay....”
“Cognition's Devin is listed as a launch partner for using ChatGPT plan....”
“Notion is both an early beta partner for the login and a launch partner for plan sharing....”
“Vercel is listed as a launch partner for the ChatGPT plan....”
“Anthropic explicitly barred third-party tools from using Claude subscriptions....”
“Google offers no official way to use Gemini subscriptions in outside apps....”
Ontology Mapping & Concepts
Related Market Signals & Shifts
Recent verified developments and strategic activity across this market segment.
OpenAI's Dev Day features challenge app store model
OpenAI's Dev Day updates position ChatGPT as an app discovery and launch platform, challenging traditional app stores. ChatGPT now has 1.2 billion weekly users and will suggest apps within conversations, allowing users to connect and use them directly. The company expanded its plugin architecture to support interactive panels, turning apps into ChatGPT-integrated experiences. "Sign in with ChatGPT" lets users bring their AI allowance to third-party apps, with 16 launch partners including Cognition, Notion, and Vercel. OpenAI also introduced an enterprise app marketplace with 30+ partners like Adobe, Figma, and Salesforce. The launch of autonomous agents, "Dots," further automates tasks using connected apps across an ecosystem of over 4,000 apps. OpenAI did not announce a billing or revenue-sharing system to fully replace app store economics.
OpenAI Near 1B Users, Boycott Begins
OpenAI reported rapid growth in ChatGPT usage, with 900 million weekly users and 50 million paid subscribers. The article notes monetization efforts, including Shop Campaigns that allow Shopify merchants to advertise in ChatGPT, with first US ads and a CPM around $60, plus high minimum budgets for early partners. It also describes political and regulatory scrutiny surrounding a recent Pentagon deal: OpenAI secured an agreement with the U.S. Department of Defense after negotiations between Anthropic and the Pentagon stalled, raising questions about the use of AI in security contexts. The piece highlights reactions, including a CancelChatGPT initiative and public discourse around trust in OpenAI, alongside comparisons to rivals like Anthropic’s Claude, which briefly surpassed ChatGPT in productivity app rankings on the Apple App Store in the US, Germany, and Canada.
OpenAI adds Spotify, Canva, Booking to ChatGPT
OpenAI has begun integrating external apps directly into ChatGPT using the Model Context Protocol (MCP), enabling users to perform tasks like listening to music, planning trips, or designing content without leaving the chat interface. An App SDK allows developers to connect their services to ChatGPT, with initial partners including Spotify, Figma, Canva, and Booking.com and additional integrations planned from Peloton, Uber, and Tripadvisor. The features are available to all registered ChatGPT users outside the EU in Free, Go, Plus and Pro plans, while the EU rollout awaits regulatory and privacy-compliance alignment. OpenAI is also testing ChatGPT Pulse, a daily personalized update feed from chats and connected apps. App connections require explicit user consent for data sharing; an app directory is planned to surface trusted tools, and OpenAI is exploring a monetization framework for developers. This move reinforces ChatGPT as a central hub for work, travel, and personal creative tasks.
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