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GPT-5 on OpenRouter abruptly stops. #1647

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opened 2026-02-16 17:31:56 -05:00 by yindo · 8 comments
yindo commented 2026-02-16 17:31:56 -05:00
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Originally created by @samholmes on GitHub (Sep 7, 2025).

Originally assigned to: @thdxr on GitHub.

Issue

https://www.youtube.com/watch?v=R3b0NIK6Lek

After some length of time, GPT-5 on OpenRouter always stops with no message/error/warning abruptly. This is 100% reproducible for me. Is this an issue only for me, or is this an issue for all models on OpenRouter? I'm not sure.

Log

https://gist.githubusercontent.com/samholmes/b41373699cdfa496f70fa0a7a53479b5/raw/9152ae9a847db1aec34c331d512210d88e856ad9/2025-09-07T164144.log

Originally created by @samholmes on GitHub (Sep 7, 2025). Originally assigned to: @thdxr on GitHub. # Issue https://www.youtube.com/watch?v=R3b0NIK6Lek After some length of time, GPT-5 on OpenRouter always stops with no message/error/warning abruptly. This is 100% reproducible for me. Is this an issue only for me, or is this an issue for all models on OpenRouter? I'm not sure. # Log https://gist.githubusercontent.com/samholmes/b41373699cdfa496f70fa0a7a53479b5/raw/9152ae9a847db1aec34c331d512210d88e856ad9/2025-09-07T164144.log
yindo added the model-problem label 2026-02-16 17:31:56 -05:00
yindo commented 2026-02-16 17:31:56 -05:00
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@github-actions[bot] commented on GitHub (Sep 7, 2025):

This issue might be a duplicate of existing issues. Please check:

  • #1710: Flow just stops when using openrouter models (similar behavior with OpenRouter models stopping after tool calls)
  • #1329: OpenRouter/Kimi K2 just stops working (similar abrupt stopping behavior with OpenRouter models)
  • #1522: Qwen3 as well as Kimi K2 keep stopping mid-chat (similar mid-conversation stopping with OpenRouter models)

Feel free to ignore if none of these address your specific case.

@github-actions[bot] commented on GitHub (Sep 7, 2025): This issue might be a duplicate of existing issues. Please check: - #1710: Flow just stops when using openrouter models (similar behavior with OpenRouter models stopping after tool calls) - #1329: OpenRouter/Kimi K2 just stops working (similar abrupt stopping behavior with OpenRouter models) - #1522: Qwen3 as well as Kimi K2 keep stopping mid-chat (similar mid-conversation stopping with OpenRouter models) Feel free to ignore if none of these address your specific case.
yindo commented 2026-02-16 17:31:56 -05:00
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@rekram1-node commented on GitHub (Sep 7, 2025):

to me this just looks like a model problem, sometimes they just stop

@rekram1-node commented on GitHub (Sep 7, 2025): to me this just looks like a model problem, sometimes they just stop
yindo commented 2026-02-16 17:31:56 -05:00
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@rekram1-node commented on GitHub (Sep 7, 2025):

could also be the openrouter provider you are being routed to, maybe they aren't hosting the model correctly

@rekram1-node commented on GitHub (Sep 7, 2025): could also be the openrouter provider you are being routed to, maybe they aren't hosting the model correctly
yindo commented 2026-02-16 17:31:56 -05:00
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@Halpph commented on GitHub (Oct 8, 2025):

I'm facing the same issue with openrouter model, they stop after each tool call

@Halpph commented on GitHub (Oct 8, 2025): I'm facing the same issue with openrouter model, they stop after each tool call
yindo commented 2026-02-16 17:31:56 -05:00
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@rekram1-node commented on GitHub (Oct 8, 2025):

@Halpph what model? A lot of openrouter providers incorrectly or poorly host models and can lead to degraded behavior like that

not saying that's 100% the issue but generally is

@rekram1-node commented on GitHub (Oct 8, 2025): @Halpph what model? A lot of openrouter providers incorrectly or poorly host models and can lead to degraded behavior like that not saying that's 100% the issue but generally is
yindo commented 2026-02-16 17:31:56 -05:00
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@Halpph commented on GitHub (Oct 8, 2025):

@rekram1-node today it happened with google/gemini-2.0-flash-exp:free from google-vertex,
z-ai/glm-4.5-air:free by Z.AI or Chutes,
mistralai/mistral-small-3.2-24b-instruct:free by Chutes

@Halpph commented on GitHub (Oct 8, 2025): @rekram1-node today it happened with google/gemini-2.0-flash-exp:free from google-vertex, z-ai/glm-4.5-air:free by Z.AI or Chutes, mistralai/mistral-small-3.2-24b-instruct:free by Chutes
yindo commented 2026-02-16 17:31:56 -05:00
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@rekram1-node commented on GitHub (Oct 8, 2025):

Ah yeah if you are using free models then no surprise at all. That's just external provider issues, not opencode

@rekram1-node commented on GitHub (Oct 8, 2025): Ah yeah if you are using free models then no surprise at all. That's just external provider issues, not opencode
yindo commented 2026-02-16 17:31:56 -05:00
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@Halpph commented on GitHub (Oct 8, 2025):

@rekram1-node It happened as well with Deepseek V3, when I realised I was paying for nothing I switched to free models...

@Halpph commented on GitHub (Oct 8, 2025): @rekram1-node It happened as well with Deepseek V3, when I realised I was paying for nothing I switched to free models...
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Reference: anomalyco/opencode#1647
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