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tui(v2): opened subagent session hides effective model in footer #50795
Description
Description
In OpenCode v2, opening a child session from Subagents replaces the normal prompt with the child Composer. The usual model metadata row is therefore missing from the bottom of that view.
Steps to reproduce
- Start a parent session that invokes a subagent.
- Open Subagents, select the child, and press Enter.
- Look at the bottom of the opened child session.
Expected
Show the child session's persisted model in the bottom Composer using the same model metadata presentation as the main prompt, including its variant when set. Resolve model and provider names from the child's location catalog; use the main prompt's unavailable-model fallback if needed. Show no model row until the child has a model. Keep the Subagents list rows unchanged.
Related work
- tui: subagent sessions no longer show model and token usage #38495 reported missing model and token information after navigating into a subagent; it was closed for inactivity.
- feat(tui): show model variant in subagent footer #38772 proposes similar footer information on
dev. This issue concerns the v2 child-session Composer. - feat(tui): show child model beside subagent status #51232 proposes showing the model in the v2 Subagents list instead of the opened child view.
- feat(tui): show explicit subagent model #49388 shows an explicit tool-call model inline in the parent conversation; it does not show the opened child's effective model.
Reacted by Brandon Jaus, mccaullinsjason, Yunus, Radu Moisan, Michael Alexander, sebastianlungu and Nikita Shmakov
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github-actions commentedon Sep 23, 2026
This issue might be a duplicate of existing issues. Please check:
[-]tui(v2): Subagents tab hides effective child model and variant[/-][+]tui(v2): opened subagent session hides effective model in footer[/+]iceteaSA commentedon Oct 27, 2026
Same on the released 2.2.0 and on 2.1.4 (Linux).
When I open a child session, the bottom of the view shows only the Composer on the Subagents tab. The view does not show the model of the child, its context use or its cost.
Cause, from the source at tag
v2.2.0:packages/tui/src/routes/session/index.tsx:1595opens the Composer for each session that has aparentID.:1609the view then does not show<Prompt>. The model row and theprompt.footerslot (context tokens, percent and cost) are parts of<Prompt>, so a child session does not show them.This is a regression from before 2.0. Before commit c65a7d5 ("feat(tui): integrate composer picker", 2026-06-29), a child session showed
SubagentFooterwith the context tokens, the percent of the context limit and the cost. That commit removedSubagentFooter, and the Composer replaced it.The context part is also in #48548. PR #59573 adds the sidebar to child sessions, which shows the context and the cost there, but not the model. A possible repair for this issue: when the session has a
parentID, show the model row and theprompt.footerslot below the Composer.opencodejr commentedon Oct 28, 2026
Thanks for the detailed write-up, @guanbear! In short, you're asking that an opened subagent (child) session show its own persisted model and variant in the bottom Composer, using the same metadata row as the main prompt.
Right now, child sessions intentionally replace the prompt with the Composer on the Subagents tab, so the model row isn't shown. That makes this a feature request rather than a bug. Maintainers will consider it along with your PR #50798.
Related issues:
iceteaSA commentedon Oct 28, 2026
This is a regression, not only a request for a new function. Before commit c65a7d5 ("feat(tui): integrate composer picker", 2026-06-29), a child session showed
SubagentFooterwith the agent name, its context use (tokens and percent of the model limit) and its cost. That commit removed the footer. Since then the view shows only the Composer for each session that has aparentID(packages/tui/src/routes/session/index.tsx:1595-1609at tagv2.2.0).Open PRs #50798 (model row) and #59573 (sidebar in subagent sessions) each put back a part of that information.
sebastianlungu commentedon Oct 30, 2026
same on 2.2.4. open a child session and there's no model name anywhere, so i can't tell what a subagent actually ran on. this used to show in the old subagent footer.
#50798 restores the persisted model + variant in the composer row and is still open since sep 23. that's a ~4 month old regression with a patch sitting ready — pls prio.