# NousResearch/hermes-agent · TUI /model picker --reasoning option handling in model switch

## Open now

- 0 issues, 1 PR open on GitHub.
- PR #138884: fix(tui): apply a picker-issued --reasoning after the canonical model pick

These members center on the TUI /model picker and its --reasoning (effort) option during a canonical model switch, including a bug report of an "unsupported canonical model option: --reasoning" error on the shared gateway. The pull requests propose ways to apply or carry that setting through the switch, and one also touches typed /model commits on local sessions; their outcomes are not stated here.

## TL;DR

- 4 member(s): 0 open issue(s), 1 closed issue(s), 1 open PR(s), 1 merged PR(s), 1 PR(s) closed without merging.
- A fix was merged to main in PR #139646. Verify it addresses your case.
- **Recommended:** read PR #139646 (and any competing PRs below) before filing. Confirm the merged change covers your symptom.

## Maintainer resolution verdict

- Internal-tracker verdict over this cluster's issue members: `resolved` · deciding PR(s): `pr-139646`. This is distinct from the fix status above. Weigh it yourself.

## How this cluster was grouped

- Link evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
- Pairwise link density `0.50`: the share of member pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36. `1.00` means every pair is linked.

## Closed / duplicate issues

- #138856: \[Bug\]\[TUI\] /model picker fails with "unsupported canonical model option: --reasoning" on the shared gateway

## Prior & competing PRs

- **#139646: fix(gateway,tui): a typed /model on a local session commits for the next turn; the picker's --reasoning lands**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `apps/desktop/src/api/canonical-live-pick.test.ts`, `apps/desktop/src/api/canonical-protocol.ts`, `apps/desktop/src/api/canonical-retained-mutation-stale.test.ts`, `apps/desktop/src/api/client.ts`, `apps/desktop/src/app/session/hooks/use-message-stream/gateway-event/deferred-pick.test.ts`, `apps/desktop/src/app/session/hooks/use-message-stream/gateway-event/deferred-pick.ts`, `apps/desktop/src/app/session/hooks/use-message-stream/gateway-event/index.ts`, `apps/desktop/src/app/session/hooks/use-model-controls.test.tsx`, `apps/desktop/src/app/session/hooks/use-model-controls.ts`, `apps/desktop/src/i18n/ar_chrome.ts`, `apps/desktop/src/i18n/de_model_menu.ts`, `apps/desktop/src/i18n/en_model_menu.ts`, `apps/desktop/src/i18n/es_model_menu.ts`, `apps/desktop/src/i18n/fr_model_menu.ts`, `apps/desktop/src/i18n/ja_model_menu.ts`, `apps/desktop/src/i18n/ru_model_menu.ts`, `apps/desktop/src/i18n/types_model_menu.ts`, `apps/desktop/src/i18n/zh-hant_chrome.ts`, `apps/desktop/src/i18n/zh_model_menu.ts`, `gateway/session_authority.py` (+58 more)
- **#138884: fix(tui): apply a picker-issued --reasoning after the canonical model pick**. open
  - maintainer direction: category `uncategorized`; implication `needs_llm`; refs `#139646`
  - files: `ui-tui/src/__tests__/canonicalSessionControls.test.ts`, `ui-tui/src/app/slash/canonicalSessionCommands.ts`, `ui-tui/src/app/slash/canonicalSessionControls.ts`, `ui-tui/src/domain/slash.ts`
- **#139545: fix(tui): carry the picker's effort through the canonical model switch**. closed without merge
  - maintainer direction: category `superseded_by_pr`; implication `superseded`; refs `#139646`, `#138856`, `#138814`, `#139160`, `#139022`

## Fix status

- Merged to main in PR #139646 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-10-16`.
- Subsystem: `gateway`