OpenAI ends Agent Builder and Evals, points to Agents SDK and Workspace Agents

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Announced the end of AgentKit's Agent Builder and Evals products and pointed users to the Agents SDK and Workspace Agents

Why it matters

Products announced in October 2025 were pulled after 8 months — the instability of the agent tooling layer

Source — Primary sources first; secondary reports are labelled “Press”

Officialopenai.comhttps://openai.com/index/introducing-agentkit/

Added in Week 35, 2026 · See that week

On the map — ③ Tools & Agents line

  1. Previous stopAnthropic publishes Code Execution with MCP
  2. This recordOpenAI ends Agent Builder and Evals, points to Agents SDK and Workspace Agents
  3. Next stopMuse Spark 1.3
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