Brain Has ~150 Trillion Synapses vs ~10 Trillion Parameters in Frontier Models
chris_j_paxton · x · 2026-10-31
Researcher chrisjpaxton offers a back-of-envelope scale comparison: the human brain has roughly 150 trillion synapses (excluding the cerebellum), while top frontier models sit around 10 trillion parameters — only about an order of magnitude apart. He argues the gap may be even smaller if you restrict the comparison to brain regions with a clear LLM equivalent, like language and reasoning circuits.
More from AGI Musings
- Nathan Young proposes prediction markets and AI reporting for AI-community accountability — NathanpmYoung · 2026-10-31
- NYC Marathon apps hit 240,000 — Delip Rao jokes agents freed researchers to run — deliprao · 2026-10-31
- The AlphaZero moment for AI coding: bespoke system designs humans can't reason about — mobileraj · 2026-10-31
- Tech debate reignites over 'uplifting' monkeys, an idea Palmer Luckey has floated — Darpinian · 2026-10-31
- Lawyers use writing as a check on their own reasoning — and LLMs threaten that — TuhinChakr · 2026-10-31
- Why AI workers should unionize now: leverage peaks early, safety is the wedge — GarrisonLovely · 2026-10-31