Ben Todd: AI's five eras halve in length, showing super-exponential growth

Ben Todd divides AI history into five eras—60 years pre-deep learning, 9 years deep learning, 4 years LLMs, and just 2 years of reasoning models—arguing each era halves in length, making super-exponential growth look like a chain of exponential phases.

2026-11-07 ~ 2026-11-07 · 2 related posts

• Ben Todd: AI's five eras each half as long, a superexponential looks like a series of exponentials — ben_j_todd · 2026-11-07
• The five eras of AI: deep learning took 9 years, LLMs 4, reasoning models just 2 — ben_j_todd · 2026-11-07