| McCulloch & Pitts model the neuron as logic | Research | Major |
| The first actual bug (medium) | Quotes & culture | Notable |
| Shannon’s maze-solving mouse (medium) | Research, Quotes & culture | Trivia |
| Turing asks: can machines think? | Research | Landmark |
| “Artificial intelligence” is coined | Research | Major |
| Logic Theorist proves theorems (medium) | Research | Major |
| The Dartmouth summer workshop (medium) | Research | Landmark |
| McCarthy designs LISP (medium) | Research | Notable |
| The Perceptron makes headlines | Research | Major |
| Samuel’s checkers player learns | Research | Notable |
| “The last invention that man need ever make” | Quotes & culture, Safety | Trivia |
| ELIZA, the first chatbot | Product | Major |
| Shakey the robot | Research | Notable |
| Minsky & Papert publish Perceptrons | Research | Major |
| “In from three to eight years…” (medium) | Quotes & culture | Trivia |
| MYCIN diagnoses infections (medium) | Research | Notable |
| The Lighthill Report | Policy | Landmark |
| Weizenbaum warns against delegating judgement | Quotes & culture, Safety | Notable |
| The Stanford Cart crosses a room (medium) | Research | Notable |
| XCON goes to work at DEC (medium) | Company & funding | Major |
| Japan’s Fifth Generation project | Policy | Major |
| Cyc begins encoding common sense | Research | Notable |
| Backpropagation, popularised | Research | Landmark |
| The LISP machine market collapses (medium) | Company & funding | Major |
| A neural network reads zip codes | Research | Notable |
| Deep Blue defeats Kasparov | Quotes & culture | Landmark |
| Long short-term memory | Research | Notable |
| Deep belief nets revive deep learning | Research | Major |
| ImageNet | Research | Major |
| Watson wins Jeopardy! | Quotes & culture | Major |
| Siri arrives on the iPhone 4S | Product, Agents & assistants | Major |
| The network that found cats (medium) | Research, Quotes & culture | Trivia |
| AlexNet wins ImageNet | Research | Landmark |
| word2vec: king − man + woman ≈ queen | Research | Notable |
| Google acquires DeepMind (medium) | Company & funding | Major |
| Generative adversarial networks | Research | Major |
| OpenAI is founded | Company & funding | Major |
| AlphaGo beats Lee Sedol | Research | Landmark |
| Tay is taken offline | Quotes & culture, Safety | Trivia |
| Attention Is All You Need | Research | Landmark |
| BERT | Model release | Major |
| GPT-2 and staged release | Model release, Safety | Major |
| GPT-3: few-shot learners | Model release | Landmark |
| AlphaFold 2 at CASP14 | Research | Landmark |
| Anthropic is founded (medium) | Company & funding, Safety | Notable |
| DALL·E and CLIP | Model release | Major |
| “Stochastic parrots” | Quotes & culture, Safety | Trivia |
| An engineer says LaMDA is sentient | Quotes & culture | Trivia |
| Stable Diffusion released openly | Model release | Major |
| ChatGPT launches | Product | Landmark |
| “The hottest new programming language is English” (medium) | Quotes & culture | Trivia |
| Bing’s “Sydney” misbehaves (medium) | Quotes & culture, Safety | Trivia |
| GPT-4, and Claude, on the same day | Model release | Landmark |
| The pause letter | Safety | Major |
| Hinton leaves Google to speak freely | Safety | Notable |
| Statement on AI Risk | Safety | Major |
| Bletchley Park AI Safety Summit | Policy, Safety | Major |
| OpenAI’s board fires, then rehires, Sam Altman | Company & funding | Landmark |
| Google Gemini 1.0 | Model release | Major |
| Sora previews text-to-video | Model release | Notable |
| Glue on pizza (medium) | Quotes & culture, Product | Trivia |
| Safe Superintelligence Inc. | Company & funding, Safety | Landmark |
| The EU AI Act enters into force | Policy | Landmark |
| OpenAI o1: models that reason | Model release | Major |
| Nobel prizes for AI | Quotes & culture, Research | Landmark |
| An AI uses a computer | Agents & assistants | Major |
| Model Context Protocol | Agents & assistants | Notable |
| “Superintelligence in the true sense of the word” (medium) | Quotes & culture | Trivia |
| DeepSeek-R1 | Model release | Landmark |
| The Stargate Project | Company & funding, Hardware | Major |
| Operator browses for you | Agents & assistants | Major |
| “Vibe coding” (medium) | Quotes & culture | Trivia |
| Claude 3.7 Sonnet and Claude Code | Agents & assistants, Model release | Major |
| “The Gentle Singularity” (medium) | Quotes & culture | Notable |
| Meta Superintelligence Labs (medium) | Company & funding | Major |
| Gold-medal level at the IMO | Research | Major |
| “Personal Superintelligence” (medium) | Quotes & culture | Major |
| GPT-5 | Model release | Major |
| California SB 53 | Policy | Notable |
| Statement on Superintelligence (low: sources disagree) | Safety | Major |
| Microsoft’s superintelligence team | Company & funding | Major |
| Claude Mythos and Project Glasswing (medium) | Model release, Safety | Landmark |
| Access to frontier models restricted, then restored (medium) | Policy | Major |
| GPT-6 Astra and “the AGI era” (medium) | Model release | Landmark |
| Meta Muse (medium) | Agents & assistants | Notable |
| “AI” becomes “Super Intelligence” | Policy | Landmark |
| OpenAI Dots (medium) | Agents & assistants | Major |