Fix for Codex 'gpt-6-sol not supported' error: update the stale app-server daemon
jasonkneen · x · 2026-09-26
If you hit "The 'gpt-6-sol' model is not supported when using Codex with a ChatGPT account," you likely have an old app-server daemon process running.
Run codex --model gpt-6-sol --no-daemon to confirm, then codex app-server daemon update to resolve it.
Related event: Codex CLI 'gpt-6-sol not supported' error fixed by updating old daemon(4 posts)→
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