"Andrej Karpathy is one of AI's guiding figures. He was a founding member of OpenAI and later served as Tesla's director of AI. He also coined the term "vibe coding," the AI-assisted coding movement that has taken software engineering by storm and was named Collins Dictionary's word of the year. In his "random notes from Claude Coding" - which are over 1,000 words long - Karpathy wrote about the changes to his own coding style."
"Karpathy name-dropped both Anthropic's Claude Code and OpenAI's Codex as having significant improvements. Claude Opus 4.5, the model that has garnered much love from engineers online, came out at the tail end of November. The AI leader's workflow has changed as a result of the AI tools. From November to December, Karpathy's 80/20 ratio flipped. He once used 80% manual coding and 20% agents; now, it's 80% agents and 20% manual code editing."
Agentic coding tools crossed a threshold of coherence around December 2025 and produced a phase shift in software engineering. Coding workflows shifted from predominantly manual coding with autocomplete toward agent-driven development using English prompts. Many practitioners moved from roughly 80% manual and 20% agent usage to roughly 80% agent-driven work with 20% manual edits and touchups. Models such as Anthropic's Claude Code, Claude Opus 4.5, and OpenAI's Codex showed notable improvements that accelerated adoption. The term 'vibe coding' describes this AI-assisted, prompt-first programming approach. Engineers across xAI, Anthropic, and other teams shared varied takes on agentic coding dynamics.
Read at Business Insider
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