GPT-5.3 Instant 显著降低幻觉率，意味着 Agent 在自主执行任务时少犯错；「AI 腔」的消退，意味着生成的邮件、文档读起来更贴合真人的阅读习惯。
While Fincke refrained from disclosing his diagnosis, he said the medical event that occurred on Jan. 7 — one day before he was scheduled to perform a spacewalk — required immediate attention from his crewmates.
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X Chat is X’s upgraded version of X’s existing DM (direct messages) feature, which the company claims is end-to-end encrypted. Security experts, however, have warned potential users that the X Chat service is less secure than other encrypted messaging apps, like Signal, and should not be trusted. It’s not clear whether the company has addressed the security community’s concerns in the standalone app.
Producers: Valerio Esposito and Cat Farnsworth
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