Error running remote compact task: stream disconnected before completion #19660

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1. linskay

   added

   appIssues related to the Codex desktop appIssues related to the Codex desktop app

   on Apr 26, 2026
2. github-actions

   added

   bugSomething isn't workingSomething isn't working

   contextIssues related to context management (including compaction)Issues related to context management (including compaction)

   connectivityIssues involving networking or endpoint connectivity problems (disconnections)Issues involving networking or endpoint connectivity problems (disconnections)

   on Apr 26, 2026
3. github-actions commented on Apr 26, 2026

   

   github-actionsbot

   on Apr 26, 2026 – with GitHub Actions

   Contributor

   More actions

   Potential duplicates detected. Please review them and close your issue if it is a duplicate.

   • Codex Desktop GPT-5.5 remote compaction fails and leaves thread unusable #19558
   • Error running remote compact task #19547
   • Context compaction not working #19441
   • Error running remote compact task: stream disconnected before completion: error sending request for url (https://chatgpt.com/backend-api/codex/responses/compact) #18450
   • Codex sometimes fails during automatic context compaction with "stream disconnected before completion" #19538

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4. etraut-openai

   removed

   appIssues related to the Codex desktop appIssues related to the Codex desktop app

   on Apr 26, 2026
5. hhkhub commented on Apr 28, 2026

   

   hhkhub

   on Apr 28, 2026

   More actions

   same here.

   Error running remote compact task: stream disconnected before completion: error sending request for url (https://chatgpt.com/backend-api/codex/responses/compact)

   👍React with 👍1Reacted by YuqiuDeng
6. devvidhani commented on May 3, 2026

   

   devvidhani

   on May 3, 2026

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   Any luck with this one? this is an outstanding issue since 5.4 release?
7. endoibiza commented on May 5, 2026

   

   endoibiza

   on May 5, 2026

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   Same here. Crashed 5x saying Error running remote compact task: stream disconnected before completion: error sending request for url (https://chatgpt.com/backend-api/codex/responses/compact). All tokens gone, nothing got done.
8. presidenzo commented on May 7, 2026

   

   presidenzo

   on May 7, 2026

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   Also seeing this on Codex Desktop for macOS.

   Thread ID: 019e0390-d329-74c3-b8ab-13a32d339c9b
   Codex App: 26.429.61741 (2429)
   Error:

   Error running remote compact task: stream disconnected before completion: error sending request for url (https://chatgpt.com/backend-api/codex/responses/compact)
   

   This is still happening today (2026-05-07).
9. chadhapankaj24 commented on May 29, 2026

   

   chadhapankaj24

   on May 29, 2026

   More actions

   Similar Error here:
   Error running remote compact task: stream disconnected before completion: unknown variant auto, expected high or original at line 1 column 180794

   
10. etraut-openai commented on Jun 29, 2026

    

    etraut-openai

    on Jun 29, 2026

    Contributor

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    Thanks for reporting this problem. Until recently, Codex used a separate endpoint and server-side logic for compaction. We recently switched to a more robust approach where the compaction logic is moved locally using the same endpoint as normal turns. This eliminates "remote compaction" errors and increases the stability and reliability of compaction operations. If you see further problems with compaction, please use /feedback and open a new bug report.
11. etraut-openai

    closed this as completedon Jun 29, 2026