model field is still overridden — Claude Code proxy takeover

Quick fix

Update to the latest CC Switch 4.0 release and retry. If it persists, temporarily remove the model fields from settings.json and report the result.

Symptom

Error outputCopy

BASE_URL 已指向代理，但 model 字段仍被覆盖

English translation

BASE_URL already points to the proxy, but the model field is still overridden.

Cause

In the reported 3.16.x versions, the proxy takeover write path still wrote fields such as `ANTHROPIC_DEFAULT_HAIKU/SONNET/OPUS_MODEL` to Claude Code's `~/.claude/settings.json`; the direct-connection path also wrote these fields unconditionally. This duplicated the mechanism that already mapped upstream models inside the proxy through `model_mapper.rs`, causing the configuration file to change with the preset when switching providers and potentially exposing provider-specific differences such as `[1M]`.

The issue was closed because it timed out without new reproduction details, not because a fix was confirmed. The maintainer said 4.0 substantially refactored the relevant functionality and recommended retrying with the latest version, but the thread contains no post-upgrade verification result.

Fix

1. 1

   Update CC Switch to the latest 4.0 release, then re-enable proxy takeover, switch providers, and check whether the model fields are still written back.

2. 2

   If upgrading is not currently possible, remove all `*_MODEL` and `*_MODEL_NAME` fields from the Claude Code configuration, leaving only the proxy address and the `PROXY_MANAGED` token. This is a temporary workaround; the fields may be written back the next time providers are switched through the UI.

   ~/.claude/settings.json

   "env": {
     "ANTHROPIC_AUTH_TOKEN": "PROXY_MANAGED",
     "ANTHROPIC_BASE_URL": "http://127.0.0.1:15721",
     "ANTHROPIC_DEFAULT_HAIKU_MODEL": "claude-haiku-4-5",
     "ANTHROPIC_DEFAULT_HAIKU_MODEL_NAME": "glm-5-turbo",
     "ANTHROPIC_DEFAULT_OPUS_MODEL": "claude-opus-4-8[1M]",
     "ANTHROPIC_DEFAULT_OPUS_MODEL_NAME": "glm-5.2",
     "ANTHROPIC_DEFAULT_SONNET_MODEL": "claude-sonnet-4-6[1M]",
     "ANTHROPIC_DEFAULT_SONNET_MODEL_NAME": "glm-5.2"
   }

3. 3

   If the problem persists in the latest version, reopen the issue with the CC Switch version, operating system, complete reproduction steps, and relevant logs or screenshots.

Affected Versions

ToolClaude Code

Version3.16.x（报告受影响；4.0 重构后是否修复未确认）

PlatformsmacOS

Source Issues

This page is distilled from 1 real issues

• #4228[Feature] 代理接管模式下不应向 Claude Code settings.json 写入 ANTHROPIC_*_MODEL 字段

FAQ

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Related problems

401 UnauthorizedUpgrade to cc-switch 4.0.x, or clear the stale third-party OPENAI_API_KEY from ~/.codex/auth.json manually, restart Codex, and sign in again with ChatGPT OAuth.2 issues mergedAuth conflictLog out of the official Claude login, clear conflicting ANTHROPIC_* variables, set hasCompletedOnboarding to true in ~/.claude.json, and restart the terminal.6 issues mergedModelScope reports 401 token invalid - Claude CodeAdd ANTHROPIC_MODEL to the provider environment variables in cc-switch to resolve the 401. It is not synced to settings.json by design.2 issues merged