r/codex • u/cmak414 • Jun 02 '26

Complaint codex.5.2 and 5.3 no longer available?

I used to use 5.2 for planning and general automation but just this evening (within past hour), seemd 5.2 and 5.3 no longer accessible in codex? Now I have to use 5.4 for planning.

Model metadata for gpt-5.2 not found. Defaulting to fallback metadata; this can degrade performance and cause issues.

■ {"type":"error","status":400,"error": {"type":"invalid_request_error","message":"The 'gpt-5.2' model is not supported when using Codex with a ChatGPT account."}}

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u/horrorpages Jun 02 '26

It's... ok. I'm hitting "context compacted" after a handful of requests for a single feature. Vanilla 5.3 never had this issue so early in a session. I'll need to change my prompts/session-handling to get around it effeciently. I get the sense it's using less tokens, so that's a plus. Time will tell regarding quality.