| 1950s–60s (Foundations) | Alan Turing proposes the Turing Test. Logic Theorist by Newell & Simon. MIT, Stanford start AI labs. |
| 1970s–80s (First Winters) | Funding dries up; limited progress. Symbolic AI stagnates. |
| 1990s–2000s (ML Awakens) | Rise of statistical ML, IBM’s Deep Blue beats Kasparov. SVMs, decision trees, basic NLP. |
| 2010s (Deep Learning Boom) | GPUs, big data, AlexNet (2012) triggers the deep learning revolution. Google DeepMind, OpenAI, etc. |
| 2020s–Now (Foundation Models & AGI Aspirations) | Transformers, LLMs (e.g., GPT), diffusion models, multi-modal AI, AGI research, open-source explosion. |