GPT-5.4 is also more reliable, producing 18% fewer errors and 33% fewer false claims than GPT-5.2, according to OpenAI.

Error logs and GitHub pull requests hint at GPT-5.4 quietly rolling out in Codex, signaling faster iteration cycles and continuous AI model deployment.

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Add Yahoo as a preferred source to see more of our stories on Google. Mike Kimmel, who goes by Python Cowboy on social media, leads guided hunts for invasive green iguanas. The annals of Florida's ...