Why Notion AI Agent V3 Ditched Complex Code for Plain English

Complexity was the enemy of progress. When Notion first started experimenting with LLMs, they went heavy on advanced code generation and rigid schemas. It didn't work. Now, the team has pivoted to a startlingly simple approach: talking to AI like a human. Ryan Nystrom, Notion's AI engineering lead, says this "rewiring" is exactly what led to their most successful AI launch ever.

How Notion Rewired its AI Agent Architecture

Engineers are trained to love deterministic systems, but LLMs thrive on intuition. Nystrom's team abandoned "pretty complicated rendering" like JSON or XML in favor of Markdown. By representing Notion pages as plain text, they allowed the model to read, search, and edit content just as a person would. The results were immediate. Released in September 2025, Notion V3 and its customizable AI agents have seen usage patterns that Nystrom calls a "step function improvement."

The 150,000 Token Sweet Spot

More data isn't always better. The team discovered that stuffing the context window leads to a "slippery slope" of latency and inaccuracy. They found the golden ratio at 100,000 to 150,000 tokens. Beyond this, the model's performance degrades significantly. To keep the AI sharp, they also limited the "menu" of tools available to the agents, preventing the paradox of choice that often confuses complex models.