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Unable to Change Models After Switching Relay When Quota Runs Out - Codex

Quick fix

Most related issues remain unresolved. Retest after upgrading to the latest version. If the problem persists, provide the Codex version, a redacted config.toml…

Symptom

Section titled “Symptom”
Error output
额度用完后，切换中转站api之后无法更换模型了
English translation

After the quota ran out, I switched to the relay API but could no longer change models.

Cause

Section titled “Cause”

This issue occurs after the Codex quota is exhausted and switching to a relay API. The maintainer said version 4.0 rewrote Codex model catalog generation and switching writes. The `model_catalog_json` pointer in `config.toml` is now treated as a regular key field during provider switching; legacy pointers or pointers written by other tools no longer invalidate the generated model catalog. The issue has not confirmed whether this fix resolved the reporter’s problem.

Comments mention deleting `model_catalog_json = ""`, disabling takeover, or signing in with the relay API as workarounds. Another user said that this setting was not present in their configuration, so these methods may not apply in every case.

Fix

Section titled “Fix”

  1. Install the latest version mentioned by the maintainer, then retest whether you can change models after the quota runs out and you switch to the relay API. Use the official Releases page to download.

  2. If the issue still reproduces, provide the maintainer with the Codex version, the `~/.codex/config.toml` after switching (remove the Key), and the model selector error or a screenshot.

Affected Versions

Section titled “Affected Versions”
ToolCodex
Version3.20.1（报告版本；维护者建议在最新版复测，未确认修复版本）
PlatformsWindows

Source Issues

Section titled “Source Issues”

This page is distilled from 1 real issues

FAQ

Section titled “FAQ”
Can deleting `model_catalog_json = ""` resolve the issue?
A comment said deleting this setting resolved the issue. Another user said it was absent from their `config.toml`, so this method may not apply.
Has the issue been resolved?
The maintainer said version 4.0 rewrote Codex model catalog generation and switching writes, and asked users to retest on the latest version. The issue does not confirm the retest result.
If the upstream is my own Sub2API and the frontend still shows luna reserve after switching models, what should I do?
A comment mentioned using model mapping, but the Codex frontend still showed luna reserve.
Section titled “Related problems”
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