Company

OpenAI

Primary category

AI Agents, AI Developer Tools, AI Infrastructure

Best for

Teams evaluating AgentKit should confirm component availability and plan migrations to Agents SDK, ChatKit, or Workspace Agents before relying on Agent Builder or Evals.

Pricing

AgentKit components were included with standard OpenAI API model pricing at launch. OpenAI now says Agent Builder and Evals are winding down and recommends Agents SDK for code-based workflows and Workspace Agents for natural-language workflows.

Free plan

API

yes

Open source/open weight

Linked launches

Latest launch date

October 6, 2025

Last verified

2026-06-22

Verification & Sources

Status: Verified profile
Source links: 1
Freshness: Needs recheck: verified June 22, 2026
Last verified: June 22, 2026
Last updated: June 22, 2026

Key source checks

Official site

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What It Does

OpenAI launched AgentKit with Agent Builder, Connector Registry, ChatKit, and Evals capabilities for agent development; OpenAI later said Agent Builder and Evals are winding down and will be unavailable after November 30, 2026.

Tool Links

Official site Latest launch profile Company profile

Launch History

AI Agents October 6, 2025

OpenAI AgentKit launches tools for building, deploying, and optimizing agents

OpenAI launched AgentKit with Agent Builder, Connector Registry, ChatKit, and new Evals capabilities for agent development and optimization.

Verified Free: No API: Yes Open: No

Clear use caseBusiness-friendlyDeveloper-friendly

AgentKit was one of OpenAI’s clearest attempts to package the agent stack beyond raw model access.

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