[Resolved] Chat history not being referenced in Agent Builder

What’s happening

  • I created an Agent workflow using Agent Builder.
  • As of Nov 11 (JST), the agent was correctly referencing chat history during conversations.
  • However, starting today (Nov 13, first checked at 10:00 JST), the agent stopped referencing chat history — responses are clearly unaware of previous messages.
  • When I checked the API logs in the Evaluate section, I found that past messages were no longer included in the request history.

Agent didn’t understand chat history

What I’ve tried

  • Toggled “Include chat history” both on and off — the issue persisted in both cases.
  • Tested using the [openai-chatkit-starter-app] ( ttps://github.com/openai/openai-chatkit-starter-app) to run the actual published workflow (not just in preview).
    • The chat history still wasn’t included.
  • Interestingly, when I tried the [HubSpot customer assistant] (ttps://www.hubspot.com/) featured on [OpenAI’s AgentKit page] (ttps://openai.com/ja-JP/index/introducing-agentkit/), it seemed to understand previous messages, suggesting that not all agents are affected.

Possible cause

  • I suspect this might be a bug.
  • Looking at the generated code from the Agents SDK, it seems like the conversation_history might be getting overwritten each time instead of being appended.
    • While this code might not be exactly what’s used internally, the behavior seems consistent with that hypothesis.

What I’d like to know

  • Can others reproduce this issue in their environment?
  • How can I report this to OpenAI or request a fix?

Apologies — since I’m a new member on the forum, I can’t include multiple links or more than one image yet. I’ve done my best to describe everything clearly despite that limitation.

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Hi, I experienced exactly the same “bug”, behavior, (hope this is not a feature …)

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Also seeing this issue here. When looking up the responses in logs, we can clearly see that there are no “previous responses” in the inputs. For responses yesterday we see those previous responses, so seems like the bug was introduced some time in the last 24h.

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Update (Nov 14, 9:30 JST)
I tested again this morning, and the Agent is now correctly referencing chat history.
It seems this was indeed a temporary “bug”.

Thank you to everyone who helped confirm and report this issue!

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Unfortunately, I am still getting this issue as of 11/30.

Anyone have and ideas?

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I tested it on my end now (12/1 13:30 (JST) ) and didn’t encounter any issues.