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OpenAI
AgentKit
Launched Oct 6, 2025
A developer toolset for building, deploying and optimising agents: visual Agent Builder, ChatKit for embedding chat UIs, Connector Registry and expanded Evals.
- Surface
- Developer tool
- Availability
- Generally available
- Plans
- —
- Retired
- —
Strengths & weaknesses
Strengths
- ChatKit and Evals generally available at launch
- Visual workflow builder with versioning
Weaknesses
- Agent Builder in beta at launch
- Agent Builder and Evals being wound down from 2026-11-30
2026-06-03 update: OpenAI is winding down Agent Builder and Evals; unavailable from 2026-11-30 (future date, so retiredDate left null). Recommends the Agents SDK instead.