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OpenAI Agent Builder and Evals Are Shutting Down: Move the Agent Stack Into Code

OpenAI's June deprecations put Agent Builder, hosted Evals, and reusable prompts on a November 30 shutdown path. Here is the practical migration plan: Agents SDK, repo-owned prompts, and eval receipts.

June 23, 2026•8 min read

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11 min read

OpenAI AgentKit in Production: An Honest Builder's Review

AgentKit gives you Agent Builder, Connector Registry, and ChatKit. I rebuilt my newsletter-research agent on it. Here is where the visual canvas wins and where I bailed back to code.

OpenAI AgentKit Agent Builder ChatKit Multi-Agent

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AGENT BUILDER

OpenAI Agent Builder and Evals Are Shutting Down: Move the Agent Stack Into Code

OpenAI AgentKit in Production: An Honest Builder's Review

Keep exploring Agent Builder

Get Smarter About AI Dev

AGENT BUILDER

OpenAI Agent Builder and Evals Are Shutting Down: Move the Agent Stack Into Code

OpenAI AgentKit in Production: An Honest Builder's Review

Keep exploring Agent Builder

Get Smarter About AI Dev