<img width="150" height="150" src="https://i0.wp.com/jack-clark.net/wp-content/uploads/2026/07/https3A2F2Fsubstack-post-media.s3.amazonaws.com2Fpublic2Fimages2Fd6d17996-2bef-40a4-abe3-be72a0e8a227_258x258-MrVmhb.png?resize=150%2C150&amp;ssl=1" class="attachment-thumbnail size-thumbnail wp-post-image" alt="" decoding="async" srcset="https://i0.wp.com/jack-clark.net/wp-content/uploads/2026/07/https3A2F2Fsubstack-post-media.s3.amazonaws.com2Fpublic2Fimages2Fd6d17996-2bef-40a4-abe3-be72a0e8a227_258x258-MrVmhb.png?w=258&amp;ssl=1 258w, https://i0.wp.com/jack-clark.net/wp-content/uploads/2026/07/https3A2F2Fsubstack-post-media.s3.amazonaws.com2Fpublic2Fimages2Fd6d17996-2bef-40a4-abe3-be72a0e8a227_258x258-MrVmhb.png?resize=150%2C150&amp;ssl=1 150w, https://i0.wp.com/jack-clark.net/wp-content/uploads/2026/07/https3A2F2Fsubstack-post-media.s3.amazonaws.com2Fpublic2Fimages2Fd6d17996-2bef-40a4-abe3-be72a0e8a227_258x258-MrVmhb.png?resize=200%2C200&amp;ssl=1 200w" sizes="(max-width: 150px) 100vw, 150px" data-attachment-id="3200" data-permalink="https://jack-clark.net/2026/07/27/import-ai-466-the-bitter-lesson-for-robotics-ais-complete-week-long-programming-tasks-and-openais-accidental-ai-hacker/import-ai-466-the-bitter-lesson-for-robotics-ais-complete-week-long-programming-tasks-and-openais-accidental-ai-hacker-2/" data-orig-file="https://i0.wp.com/jack-clark.net/wp-content/uploads/2026/07/https3A2F2Fsubstack-post-media.s3.amazonaws.com2Fpublic2Fimages2Fd6d17996-2bef-40a4-abe3-be72a0e8a227_258x258-MrVmhb.png?fit=258%2C258&amp;ssl=1" data-orig-size="258,258" data-comments-opened="1" data-image-meta="{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;,&quot;alt&quot;:&quot;&quot;}" data-image-title="Import AI 466: The bitter lesson for robotics, AIs complete week-long programming tasks; and OpenAI&amp;#8217;s accidental AI hacker" data-image-description="" data-image-caption="" data-large-file="https://i0.wp.com/jack-clark.net/wp-content/uploads/2026/07/https3A2F2Fsubstack-post-media.s3.amazonaws.com2Fpublic2Fimages2Fd6d17996-2bef-40a4-abe3-be72a0e8a227_258x258-MrVmhb.png?fit=258%2C258&amp;ssl=1" />Welcome to Import AI, a newsletter about AI research. Import AI runs on arXiv, cappuccinos, and feedback from readers. If you’d like to support this, please subscribe. Subscribe now Epoch and METR release MirrorCode, a benchmark for seeing how well AI systems can do long-horizon programming tasks:…AI systems can’t solve the hardest tasks yet (good!)&#8230;Epoch [&#8230;]