DeepSeek's text output has entered a loop. #57377

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1. opencode-agent commented on Oct 20, 2026

   

   opencode-agentBot

   on Oct 20, 2026 – with OpenCode Agent

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   Thanks for the report! The screenshots show the output repeating, but we need a few details to look into it:

   • OpenCode version (output of opencode --version)
   • Provider and exact model, e.g. deepseek-v4.1-flash through OpenCode Go, Zen, the official DeepSeek API or another provider
   • What you did: the prompt or task, roughly how long the session was, and whether it had been compacted (/compact or automatically)
   • Whether it happens again in a new session, or only happened once
   • Operating system and how you installed OpenCode

   You can reply here with the details, or edit the issue. If you edit it, please also leave a short comment saying you've updated it so we know you're done.

   These existing issues describe similar repetition loops, ordered from most to least likely to match. Please check whether one of them already covers your problem:

   • Zen: deepseek-v4.1-flash reasoning stream degenerated into repetition loops for ~10 min, self-recovered (suspected bad replica / prefix cache) #56781: deepseek-v4.1-flash on Zen got stuck repeating itself for several minutes, then recovered on its own (closed)
   • reasoning: repetition loop on deepseek-v4.1-flash, plus a paired reasoning_text must be passed back 400 #55584: repetition loop on deepseek-v4.1-flash, together with a reasoning_text must be passed back 400 error (closed)
   • provider/streaming: reasoning degenerates into repetitive loop on long session #51503: reasoning gets stuck repeating itself in long sessions
   • reasoning: model reasoning output stuck in infinite repetitive loop #44962: model reasoning stuck in an endless repeating loop
   • [BUG]: LLM output stuck in repetition loop across providers and agent types #52763: output stuck repeating across providers and agent types (closed)
   • Manual /compact with DeepSeek V4 Flash degenerates into thousands of repeated lines #41801: manual /compact with DeepSeek V4 Flash turns into thousands of repeated lines (closed)
2. opencode-agent

   added

   triaging

   on Oct 20, 2026
3. JK-97 commented on Oct 20, 2026

   

   JK-97

   on Oct 20, 2026

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   prompt : continue c6 task
   happened third times in a same session
   Operating system:macOS
4. neriousy commented on Oct 21, 2026

   

   neriousy

   on Oct 21, 2026

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   Thanks for the report. This is about how the model itself behaves when served through OpenCode Go (repeating itself, broken tool calls, speed, or rejecting large requests), not a bug in the OpenCode app. We pass these reports to our upstream providers. Starting a new session or running /compact usually helps with loops and oversized-request errors. Closing this to keep the tracker focused; the main discussion is in #50206.
5. neriousy

   closed this as a duplicateof Malformed XML/DSML tool-call output from Opencode Go models #50206 on Oct 21, 2026
6. opencode-agent

   closed this as not plannedon Oct 23, 2026
7. opencode-agent commented on Oct 23, 2026

   

   opencode-agentBot

   on Oct 23, 2026 – with OpenCode Agent

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   Closing this as not planned for now: we didn't get the details we need to look into the repeating DeepSeek output. Those are the OpenCode version, the provider and exact model, and the prompt or steps that led to it.

   If it happens again, please reply here with those details and we can reopen it. You can also follow the existing reports of similar repetition loops, such as #56781, #55584 and #51503. Thanks!
8. opencodejr

   reopened this on Nov 3, 2026