🕰️ History of AI
Seventy-five years from the Imitation Game to humanoid robots — every milestone that mattered, and why, in one line each.
- 1950
Turing proposes the Imitation Game
Frames "can machines think?" as a testable question.
- 1956
Dartmouth workshop coins “artificial intelligence”
The field gets its name and founding agenda.
- 1958
Rosenblatt builds the Perceptron
First trainable neural network — and first AI hype cycle.
- 1969
Minsky & Papert publish “Perceptrons”
Exposes single-layer limits; helps trigger the first AI winter.
- 1986
Backpropagation popularized (Rumelhart, Hinton, Williams)
Makes training multi-layer networks practical — the engine of everything since.
- 1997
Deep Blue defeats Kasparov
A machine beats the world chess champion; search + compute wins.
- 1998
LeCun’s LeNet reads checks with CNNs
Convolutional networks prove themselves in production.
- 2012
AlexNet wins ImageNet
GPUs + deep CNNs crush the field — the deep-learning era begins.
- 2014
GANs invented (Goodfellow)
Machines learn to generate; seeds today’s image generation.
- 2015
OpenAI founded; DeepMind’s DQN masters Atari
Reinforcement learning + the lab that would ship ChatGPT.
- 2016
AlphaGo defeats Lee Sedol
Intuition-like play in Go, a decade ahead of expectations.
- 2017
“Attention Is All You Need” — the transformer
The architecture behind every modern frontier model.
- 2018
BERT and GPT-1
Pretraining on raw text becomes the dominant paradigm.
- 2020
GPT-3 (175B)
Scale produces few-shot abilities nobody explicitly programmed.
- 2021
GitHub Copilot; DALL·E
AI starts writing code and making images for normal users.
- 2022
Stable Diffusion open-sourced; ChatGPT launches
Image gen for everyone, then the fastest-growing app in history.
- 2023
GPT-4, Claude, LLaMA leaks/open weights
Frontier reasoning arrives; the open-weights movement explodes.
- 2024
Multimodal frontier models; o1 reasoning; Nobel Prizes for AI
Models see/hear/speak, think step-by-step; Hinton & Hassabis honored.
- 2025
Agents go mainstream — coding agents, MCP, computer use
AI stops just answering and starts doing multi-step work.
- 2026
Reasoning models commoditize; video generation matures; humanoids ship
Frontier capability spreads to open models; AI enters the physical world.
For what happened this month instead of this century, see Model Releases and the Heat Board.