[FEATURE]:Possibility for choosing the model for the subagents #46122

Activity

1. github-actions

   assigned

   kitlangton

   on Aug 29, 2026
2. github-actions commented on Aug 29, 2026

   

   github-actionsBot

   on Aug 29, 2026 – with GitHub Actions

   Contributor

   More actions

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

   • [FEATURE]: Dynamic model selection for subagents via Task tool #6651: Dynamic model selection for subagents via Task tool — covers the same request to choose a different model for subagents
3. CloudyRiver9 commented on Sep 1, 2026

   

   CloudyRiver9

   on Sep 1, 2026

   More actions

   I've hit this exact need with a multi-model agent cluster. Some empirical findings that might help:

   1. Runtime config changes don't take effect: modifying agents/*.md model frontmatter while opencode is running does not affect new subagent sessions (verified via the session table's model field) — config is loaded at startup.
   2. The plumbing already exists: in packages/opencode/src/tool/task.ts the model resolution chain (agent model first, falling back to the parent message model) is already there, and the underlying PromptInput already accepts an optional model — only the task tool's Parameters schema is missing an optional model field. A minimal patch is ~15 lines.
   3. Use case: cost-tiered agents — a cheap flash worker by default, with per-task override to a stronger reasoning model for critical paths, without duplicating agent definitions per model tier.

   I'd be happy to open a PR for the minimal patch if maintainers are interested in this direction.
4. neriousy commented on Oct 20, 2026

   

   neriousy

   on Oct 20, 2026

   Member

   More actions

   Thanks for the suggestion — OpenCode 2.0.5 added the ability to choose a model for individual subagent tasks, including codebase exploration. Ask OpenCode to use a particular model for the subagent, or set a default with "agents": { "explore": { "model": "provider/model" } } in your opencode.json, replacing provider/model with a model from one of your providers. Update with opencode upgrade or npm i -g @opencode/cli@latest (desktop: update the app). Please reopen or comment if this still doesn't work on that version.
5. neriousy

   closed this as completedon Oct 20, 2026