February 2026

AI Now Writes Nearly One-Third of New Code on GitHub, Landmark Study Finds

A study published in Science finds that AI now generates nearly 30% of new Python code on GitHub in the United States, up from just 5% in 2022. The gains are real - but they flow almost entirely to experienced developers, not junior ones.

GPT-5.3 Codex vs. Claude Opus 4.6: Two Philosophies, One Problem

Inside Claude Opus 4.6: Anthropic's Most Capable and Scrutinized Model Yet

Anthropic's Claude Opus 4.6 system card documents sweeping capability gains alongside safety findings that are harder to dismiss than those of any previous generation. On cyber evaluations the model has hit a ceiling, on autonomous R&D it is approaching one, and the tools used to monitor it are struggling to keep pace.