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model is not supported when using Codex - Codex

Quick fix

Disable cc-switch proxy takeover to avoid writing unsupported model IDs to Codex, preventing official subscription bans or request rejections.

Symptom

Section titled “Symptom”
Error output
{
  "type":"error",
  "status":400,
  "error":{
    "type":"invalid_request_error",
    "message":"The '62cc400ee35e43808b1688fcbc9c3e88' model is not supported when using Codex with a ChatGPT account."
  }
}

Cause

Section titled “Cause”

When using the 'Log in with ChatGPT account' mode in Codex, cc-switch may write unsupported model IDs to the Codex configuration file. Codex strictly checks outgoing model names (e.g., requiring Claude models to start with claude-*). If a non-officially supported model ID is detected, the request is rejected. Additionally, to prevent official subscription accounts from being banned, cc-switch's proxy takeover feature currently explicitly does not support hot-swapping for official subscriptions.

Fix

Section titled “Fix”

  1. Disable cc-switch proxy takeover. Normal switching between official subscriptions and third-party providers works fine; proxy takeover is only for hot-swapping in CLI and is currently unsupported for official subscriptions to prevent bans.

Affected Versions

Section titled “Affected Versions”
ToolCodex
Version3.16.1
PlatformsmacOS

Source Issues

Section titled “Source Issues”

This page is distilled from 2 real issues

FAQ

Section titled “FAQ”
How to use cc-switch in Codex without logging in with an official account?
Do not enable proxy takeover. Normal switching between official subscriptions and third-party providers works fine; proxy takeover is only for hot-swapping in CLI.
What if I get this error even when using a third-party provider that natively supports OpenAI Responses API?
This is caused by Codex checking the outgoing model name. Currently, you must wait for cc-switch to update to support model ID mapping, or use tools like codexplusplus to mask the model name.
Section titled “Related problems”
HTTP 401 Unauthorized - CC Switch AnthropicUpgrade cc-switch to a fixed build so it sends the x-api-key and anthropic-version headers Anthropic requires.2 issues merged401 Unauthorized: Incorrect API key providedAfter switching to OpenAI Official or turning the proxy off, clear the leftover third-party OPENAI_API_KEY from ~/.codex/auth.json and restart Codex.2 issues mergedauth.json under .claude is forcibly replaced after a restart - CodexUpgrade cc-switch to the latest version, or turn proxy takeover off before signing in officially, so a stale snapshot cannot overwrite official credentials.5 issues merged

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