Claude Code ignores the model switch in an old window - CC Switch

Quick fix

A Claude Code session already open does not pick up a model switch in cc-switch. Close and reopen the window, or use the new model in a new window.

Symptom

Error outputCopy

trae里使用Claude code vs插件时用cc switch切换opus 4.8模型原对话框没反应，开新窗口才可以用切换的模型，怎么让旧窗口可以使用切换的模型，项目都在旧窗口里，好像是有模型锁，这个要怎么解决

English translation

Using the Claude Code vs plugin in trae, switching to the opus 4.8 model with cc switch does nothing in the existing dialog — only a new window uses the switched model. How do I make the old window use the switched model? All my projects are in the old window. It looks like there is a model lock. How do I resolve this?

Cause

The behaviour is that after switching models in cc-switch, an already-open Claude Code window or plugin dialog keeps using the original model, and the new model configuration does not apply to the existing session immediately. The user describes it as "the existing dialog does nothing" and "only a new window uses the switched model", and guesses there is a model lock.

The input also contains another related variant: opening Claude Code from the model screen produces a command-line error about a truncated command, such as 'r-specific' or 'tings' not being an internal or external command — apparently the log or command string "Using provider-specific claude config:" being truncated wrongly. That variant is not the same error as the old window not applying the switch, but both belong to this cluster of model-switching / Claude Code launch problems.

Fix

1. 1

   After switching models, close the current Claude Code window, terminal session, or IDE plugin dialog.

2. 2

   Reopen Claude Code or start a new session window, and confirm the new session uses the switched model.

3. 3

   If opening Claude Code from the cc-switch model screen reports 'r-specific' or 'tings' is not an internal or external command, avoid that entry point: start Claude Code from a terminal by hand, and retry after upgrading to a newer version.

Affected Versions

ToolClaude Code

VersionUnknown

PlatformsWindows

Source Issues

This page is distilled from 2 real issues

• #2530从模型界面打开ClaudeCode报错
• #4607trae里使用Claude code vs插件时用cc switch切换opus 4.8模型原对话框没反应，开新窗口才可以用切换的模型

FAQ

Why does nothing change in the old window after switching models?

A Claude Code session already open does not apply a cc-switch model switch automatically. You have to close the old window or start a new session for it to take effect.

Can I make the old window use the new model directly?

Per the issue, there is currently no way to apply the new model to an old window immediately; users report that a new window uses the switched model.

Opening Claude Code from the model screen reports 'r-specific' is not an internal or external command. What now?

That is the other related variant, apparently a truncated command or log string. Do not launch from that entry point — open a terminal and run Claude Code by hand, then upgrade cc-switch and see whether it is fixed.

Is this related to a model lock?

The user guesses in the issue that it looks like a model lock, but no maintainer confirmed that. The observable behaviour is that an existing session does not refresh the model configuration automatically.

Related problems

codex cli failed - CC SwitchUpgrading cc-switch to v3.16.3 or newer fixes the local environment detection and the blocked upgrade path.2 issues mergedcc-switch config not applied / not picked up after switching - Claude CodeConfirm the app actually reads the config path cc-switch writes to, then check routing and plugin toggles, duplicate keys, and version compatibility.28 issues mergedError in .codex cc-switch.db causes cc-switch startup failureClose cc-switch, clean records with empty base_url in cc-switch.db, or delete the database file and restart.1 issues merged