# NousResearch/hermes-agent · Fix stale model name sent after /model switch

## Open now

- Nothing open on GitHub.

These issues and fixes address a bug where switching models mid-stream caused the old model name to be sent to the new provider, resulting in errors. The fixes ensure the current model is re-read on each stream attempt or retry after a /model switch.

## TL;DR

- 4 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 2 PR(s) closed without merging.
- A fix was merged to main in PR #112258. Verify it addresses your case.
- **Recommended:** read PR #112258 (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-112258`. 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evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.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

- #112121: Fallback after /model switch sends stale model name to wrong provider (404)

## Prior & competing PRs

- **#112258: fix(agent): /model switch during a stalled stream no longer sends the old model to the new provider (#112121, salvage #112125, #112127)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `agent/chat_completion_helpers.py`, `tests/agent/test_stream_retry_route_switch.py`
- **#112125: fix(agent): rebuild stream retry after model switch**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `66c9440826`, `#112258`
- **#112127: fix(agent): re-read model per stream attempt after /model switch**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `66c9440826`, `#112258`

## Fix status

- Merged to main in PR #112258 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-16`.