Original: Simon Willison · 26/02/2026
Summary
Andrej Karpathy discusses the transformative impact of AI on programming, highlighting significant advancements in coding agents since December 2025.Key Insights
“coding agents basically didn’t work before December and basically work since” — Andrej Karpathy reflects on the sudden improvement in coding agents due to AI advancements.
“the models have significantly higher quality, long-term coherence and tenacity” — Karpathy emphasizes the enhanced capabilities of AI models in programming.
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Full Article
26th February 2026 It is hard to communicate how much programming has changed due to AI in the last 2 months: not gradually and over time in the “progress as usual” way, but specifically this last December. There are a number of asterisks but imo coding agents basically didn’t work before December and basically work since - the models have significantly higher quality, long-term coherence and tenacity and they can power through large and long tasks, well past enough that it is extremely disruptive to the default programming workflow. […] — Andrej KarpathyRelated Articles
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Originally published at https://simonwillison.net/2026/Feb/26/andrej-karpathy/#atom-everything.