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On October 29, 2026, Vaibhav Srivastav reminded users not to casually switch Codex's default model. In response to suggestions to change the default model of Codex's Dreaming V3 memory system to gpt-6-luna and gpt-6.1-terra, he said that unless one truly knows what one is doing, one should not switch, because these models' prompts are carefully calibrated for the default model. There have been no subsequent developments.
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Vaibhav warns against casually switching Codex's default modelsDevelopments
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Oct 29
Vaibhav Srivastav
Vaibhav warns against casually switching Codex's default models
In response to suggestions to switch the Codex Dreaming V3 memory system's default models to gpt-6-luna and gpt-6.1-terra, Vaibhav Srivastav warns: unless you truly know what you're doing, don't switch the models, because the prompts for these models are carefully calibrated for the default models.