OpenCode does not recognize the model assigned to the subagent. #25802

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1. github-actions

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   rekram1-node

   on May 5, 2026
2. github-actions commented on May 5, 2026

   

   github-actionsBot

   on May 5, 2026 – with GitHub Actions

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

   • [Bug] Model parameter ignored when launching subagent with agent name #18615: Model parameter ignored when launching subagent with agent name — subagent ignores the explicitly assigned model
   • subagent model variants are parsed but not applied at runtime in v1.4.0 #21632: subagent model variants are parsed but not applied at runtime — configured model/variant for subagents not honored at runtime
   • Subtask commands do not inherit model #6928: Subtask commands do not inherit model — subtasks not using the configured model

   If your issue is the same as one of the above, please close this one and add any additional context there.
3. rekram1-node commented on May 5, 2026

   

   rekram1-node

   on May 5, 2026

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   need more info not following
4. im-id01 commented on May 7, 2026

   

   im-id01

   on May 7, 2026

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   Well I have the same issue.

   When attempting to configure a custom subagent to use OpenRouter models via the model: openrouter/ format in the agent configuration file (.opencode/agents/subagent.md), OpenCode consistently throws a ProviderModelNotFoundError, even when using model IDs that appear in the opencode models list.

   Steps to reproduce:

   1. Create or edit a subagent configuration file (e.g., .opencode/agents/subagent1.md)
   2. Add a model configuration using OpenRouter format: model: openrouter/nvidia/nemotron-3-super-120b-a12b (or any other)
   3. Ensure the model ID exists in opencode models output under the openrouter/ section
   4. Attempt to invoke the subagent via @subagent1 or Task tool delegation
   5. Observe ProviderModelNotFoundError despite valid model configuration

   Expected behavior:
   The subagent should initialize and process tasks using the specified OpenRouter model.

   Actual behavior:
   Persistent ProviderModelNotFoundError occurs regardless of the specific OpenRouter model ID used (tested with multiple models from the opencode models list).

   Environment:

   • Operating System: Windows
   • OpenCode version: 1.2.27
   • Configuration: Custom subagent in .opencode/agents/ directory

   Additional notes:
   The issue appears specific to subagent model configuration, as primary agents and built-in subagents (like explore) function correctly with OpenRouter models. The error persists even when using model IDs verbatim from opencode models output, suggesting a potential issue in how subagents resolve or validate OpenRouter model configurations.
5. rekram1-node commented on May 7, 2026

   

   rekram1-node

   on May 7, 2026

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   I tested this:

   {
     "$schema": "https://opencode.ai/config.json",
     "provider": {},
     "agent": {
       "custom": {
         "model": "openrouter/nvidia/nemotron-3-super-120b-a12b",
         "mode": "subagent",
       },
     }
   }
   

   cannot reproduce
6. mppks commented on May 9, 2026

   

   mppks

   on May 9, 2026

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   I'm getting the same error when defining a subagent in the MD file. When defining a subagent with the same data in JSON, everything works fine.
7. rekram1-node commented on May 11, 2026

   

   rekram1-node

   on May 11, 2026

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   How are u defining it in markdown tho? maybe make sure the model name is properly quoted
8. im-id01 commented on May 11, 2026

   

   im-id01

   on May 11, 2026

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   ok, it seems it worked now, i think i had to restart opencode ... then it started to work
9. rekram1-node

   closed this as not plannedon May 26, 2026
10. rekram1-node commented on May 26, 2026

    

    rekram1-node

    on May 26, 2026

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    cant reproduce this, i think it may be from ur plugin, try w/ opencode --pure