https://aifaultline.com/authors/aaron-chatterji/New papers by Aaron Chatterji in the AI Fault Line guide, and news naming them. https://aifaultline.com/research/p/title-44241cbc59e57883/https://aifaultline.com/research/p/title-44241cbc59e57883/Thu, 25 Jun 2026 00:00:00 +0000Analyzing OpenAI Codex telemetry across personal, organizational, and internal-OpenAI users, the authors document active users growing more than fivefold in the first half of 2026 (fastest outside software developers), over 10% of users managing 3+ concurrent agents weekly, 26.6% using shareable skills, and a near-tenfold rise in the share of users submitting tasks estimated at 8+ human-hours. Inside OpenAI, Codex has largely displaced business ChatGPT use, offering an early look at what near-frontier agentic adoption implies for workflow restructuring — though external organizational uptake remains far more uneven, underscoring the diffusion gap central to AI-productivity forecasts.