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用了 AI，感觉干活快了，实际却更慢了？ METR 的一项研究出现了这个反差：16 名资深开源开发者完成 246 项真实任务，每项任务随机决定是否允许使用 AI。 结果是，使用当时的 AI 工具，完成时间增加了约 19%。但实验结束后，开发者仍估计 AI 帮自己节省了约 20% 的时间。 推荐读这篇《Measuring the Impact of Early-2025 AI on Experienced Open-Source Developer Productivity》。它提醒我们：初稿出来得快，不代表任务完成得快。等待生成、检查结果、修改返工，都要算进总时间。 不过，别把它概括成“AI 让程序员变慢”。研究针对熟悉成熟项目的开发者，使用的是 2025 年初的工具，不能代表所有编程工作，更不能直接代表今天。 还有个值得一起读的后续：METR 在 2026 年更新中观察到一些加速信号，但也指出参与者选择和计时方式等问题，使新数据难以可靠估计提效幅度。 比起争论 AI 到底提不提效，更实用的办法是：选一项重复任务，记下从开始到真正交付的总用时，再看质量和返工有没有变化。 “用起来很顺”和“确实省了时间”，可以分别记录。

Back in 2012, AlexNet was trained on two NVIDIA gaming GPUs. Jensen understodd what that meant before almost anyone else, and bet the company on it. A couple weeks ago he spent a good chunk of a meeting with us nerding out on our little $400 open-source microrobot. Why it runs hot, which chip would get more FLOPs, how many watts it would draw 🤓 His latest big bet has been open models, his very first post on X 👇 If open models had only one champion, this week would have been the end. They have millions of builders, including plenty inside NVIDIA who’ve been messaging us the same thing: keep building in the open. We will.

A week ago, Chun (@satofishi) sold 6,200 $wstETH ($18.5M) when $ETH was trading at $2,400. Over the past 2 days, he has bought back 5,246 $ETH ($10.78M) at an average price of $2,054.

Gen AI website traffic share update – October 2026 🗓️ 12 months ago (November 2025): ChatGPT: 69.5% Gemini: 15.9% DeepSeek: 4.1% Grok: 3.3% Perplexity: 2.2% Claude: 2.1% Copilot: 2.0% 🗓️ 6 months ago (April 2026): ChatGPT: 53.7% Gemini: 26.7% Claude: 8.0% DeepSeek: 4.0% Grok: 3.2% Copilot: 2.0% Perplexity: 1.5% 🗓️ 3 months ago (August 2026): ChatGPT: 55.6% Gemini: 25.6% Claude: 9.3% DeepSeek: 3.5% Grok: 2.5% Copilot: 1.6% Perplexity: 0.9% 🗓️ 2 month ago (September 2026): ChatGPT: 56.4% Gemini: 25.0% Claude: 9.6% DeepSeek: 3.4% Grok: 2.3% Copilot: 1.5% Perplexity: 0.9% 🗓️ 1 month ago (October 2026): ChatGPT: 55.7% Gemini: 24.2% Claude: 11.5% DeepSeek: 3.4% Grok: 2.2% Copilot: 1.1% Perplexity: 0.8%

For more than six decades, 103-year-old Irvin Koch has been pouring drinks for customers out of the basement of his home in Maryland. His dive bar, legally zoned for commercial use, is a time capsule tucked away from the rest of the world above.