The Agents API can now operate computers and adds Codex's multi-agent features, tool search, tool calling and context compaction. OpenAI runs the underlying infrastructure.
The Decisions API is built for constrained, real-time decisions: developers define a finite set of questions and possible answers, the Luna model evaluates text or images and returns one of those answers. Typical uses are classification, request routing or picking an agent's next action. It starts as a limited preview, with a broader release planned within days of DevDay.
With Bedrock Managed Agents, powered by OpenAI, OpenAI and Amazon have built managed agents for AWS. They combine the Agents API with AWS-native customization and integration; according to OpenAI, the agents run entirely within AWS.
OpenAI also supports the proposed MCP Events specification: events in connected applications can trigger ChatGPT automations. OpenAI's example: a new task appears on a project board, ChatGPT reads the related documents and prepares a plan on its own.