5.5 xhigh requests going to 5.4

Hi @JS-Prod,

That does look unusual.

Just to narrow it down: was gpt-5.5 xhigh explicitly pinned in the configuration for the affected tasks or was it selected only through the model picker?

Also, were any subagents involved? If so, do you know which models those subagents were configured to use? In some setups, subagents can run with different model and reasoning settings than the primary agent, which could explain why GPT-5.4 appears in the analytics.

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Subagents – Codex | OpenAI Developers

How subagent workflows keep Codex focused and how to choose models for different agents