Every major AI breakthrough in recent years has pushed the expert prediction earlier. Here's why.
2017
Transformer architecture invented at Google
The paper "Attention Is All You Need" changed everything. Every powerful AI system today — GPT-4, Claude, Gemini — is built on this. Before this, AI had a memory problem. After it, scale became the strategy.
2020
GPT-3 shows AI can generalise
For the first time, a single model could write poetry, answer legal questions, and debug code — without being specifically trained for any of them. Expert predictions shifted from "maybe never" to "probably this century."
2022
ChatGPT: 100 million users in 60 days
The fastest product adoption in history. This wasn't just a technology milestone — it was a signal that AI was ready for general use. Forecasts shifted again: the median prediction moved from 2055 to 2048.
2023
GPT-4 passes the bar exam — top 10%
Not a party trick. A model that passes a professional exam at expert level is performing at the level of a trained human in a high-stakes domain. The "Sparks of AGI" paper from Microsoft triggered serious academic debate.
2024
o1 reasoning: AI learns to think before it speaks
OpenAI's o1 model showed that giving AI time to reason through a problem — before answering — dramatically improved accuracy on hard problems. Performance on PhD-level science benchmarks exceeded most human experts.
Now — Aug 2026
AI completing multi-day software projects autonomously
Claude Code, Devin, and similar agentic systems are completing entire software projects without step-by-step human instruction. AI is beginning to assist in novel scientific discovery. The forecast median sits at 2031 — down from 2060 in 2019.
~2027–28 (predicted)
AI researchers working at human expert level
Anthropic's internal framing and OpenAI's published roadmaps both point to this window for AI that can autonomously conduct scientific research. Not full AGI — but the line starts to blur.
~2031 (median forecast)
Economic AGI threshold
The Metaculus community and multiple academic surveys converge around this date for AI that can substitute for the majority of remote knowledge work. Uncertainty range is wide: optimists say earlier, sceptics say later.