GPT-5.4 is billed as "our most capable and efficient frontier model for professional work." ...
The tool, offered by the recently-rebranded company Superhuman, gives feedback based on the work of famous dead and living writers—without their permission.
Apple said earlier this week that the “super” name change would retroactively apply to the regular-old Apple M5’s performance cores, too. And the macOS Tahoe 26.3.1 update released yesterday ...
GPT-5.4 is also more reliable, producing 18% fewer errors and 33% fewer false claims than GPT-5.2, according to OpenAI.
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