30 Months on the Exponential (in Charts)
My second book on AI, Co-Existence, is out today (and you can get it here), 30 months after the release of Co-Intelligence in early 2024.

Proof1 independent outlet
Key points
- Looking back across the gap between these books is a good way to get a sense of AI progress.
- In this case, I used Opus 5.5 in Claude Projects, which allows you to talk to a single “orchestrator” agent that then spins off additional agents as needed, giving them instructions and relaying information back to you.
- This was the AI model that most people remember from the first couple years of AI use, it was the one I thought about while writing Co-Intelligence, and it was the one that gave ChatGPT its status as the default AI for many people.
- We are living in an exponential
Sources (1)
- [1]30 Months on the Exponential (in Charts)One Useful Thing (Ethan Mollick) · Oct 20, 03:57 PM
My second book on AI, Co-Existence, is out today (and you can get it here), 30 months after the release of Co-Intelligence in early 2024.
Looking back across the gap between these books is a good way to get a sense of AI progress.
Extractive summary: sentences quoted from the sources.
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