OpenAI Turns ChatGPT Into a Work Platform With Shared Docs, Plugins, and a 32-Partner Marketplace

At DevDay, OpenAI added collaborative documents, an open plugin system, Slack and Teams integrations, and a new Pro 500 tier, pushing ChatGPT toward operating-system territory.
OpenAI used its DevDay event to reposition ChatGPT as a workplace platform rather than a chat window. The company announced shared workspaces, collaborative documents and slides, an open plugin system with MCP event automation, integrations with Slack and Microsoft Teams, an enterprise marketplace launching with 32 partners, and a new Pro 500 pricing tier. The cumulative effect is a product that now competes less with other chatbots and more with the collaboration software employees already open every morning.
The shared workspaces and collaborative documents are the clearest break from ChatGPT's origins. Instead of one person prompting a model in isolation, teams can now work inside the same space, generating and editing documents and slide decks together. That puts OpenAI directly against Google Workspace and Microsoft 365, the two suites that have owned office collaboration for years. It also gives ChatGPT a reason to stay open on a worker's screen all day, not just when a question comes up.
The plugin system may matter more than the document features. OpenAI is opening the platform to third-party developers and tying it to MCP event automation, which lets outside tools trigger actions inside ChatGPT and vice versa. Slack and Microsoft Teams integrations extend that reach into the messaging apps where most enterprise coordination already happens. The enterprise marketplace, stocked with 32 launch partners, gives those developers a distribution channel from day one, an incentive structure OpenAI has struggled to sustain in past plugin efforts.
Pricing got a new top end as well. The Pro 500 tier sits above the existing paid plans, aimed at heavy users and companies that want the full workspace stack rather than a per-seat chat subscription. OpenAI did not detail what separates Pro 500 from lower tiers beyond the positioning, but the name signals a per-month figure that will test how much enterprises will pay for an AI layer on top of software they already license.
The strategic bet is that collaboration, not raw model quality, decides which AI assistant companies standardize on. If teams store their documents, automate their workflows, and message each other inside ChatGPT, switching costs rise sharply. Rivals including Anthropic, Google, and Microsoft are moving in the same direction, so the next few quarters will show whether OpenAI's first-mover advantage in consumer chat translates into enterprise contracts. The open question is whether IT departments trust a single vendor with documents, messaging, and automation at once, or whether they spread those functions across incumbents.
For now, the DevDay slate answers a question OpenAI has faced since ChatGPT launched: what does the product become after the novelty of chatting with a model wears off? Its answer is an operating system for work, with the chatbot as just the front door.