A Day That Will Go Down in History for AI

An AI Breakthrough That Will Go Down in History(John T. Barr/AFP via Getty Images)If you think artificial intelligence has been advancing fast, just watch what happens as AIs start building their own code.--:----:--Upgrade to Listen5 minsProduced by ElevenLabs using AI narration195128Last week brought a day that will go down in history. February 5 saw the release of Anthropic’s Claude Opus 4.6 and OpenAI’s GPT-5.3-Codex. That may not seem especially exciting to the non-expert eye, but behind these arcane names is a new reality.What makes these new models so important is the fact that much of the programming work behind them was done by artificial intelligence rather than humans. Anthropic insiders are claiming, for instance, that effectively 100 percent of the code behind their products is written by Claude itself. You can debate exactly how much human guidance and oversight goes into that, but other major AI labs all seem to be on the same trajectory. (Disclosure: I am on the Anthropic Economic Advisory Council.)Start Your Free Trial to Unlock This StorySupport our journalism and unlock all of our investigative stories and provocative commentary about the world as it actually is. Get your first 7 days free.Annual$8.33/monthBilled as $100 yearlyMonthly$10/monthBilled as $10 monthlyAlready have an account?Sign In