What your model never saw.

A model stops learning on a fixed date and cannot tell you so; it answers confidently about the months it missed. Pick a cutoff and this returns the days recorded since, as structured data rather than a search result.

Your model

Cutoff

0choose a cutoff to see what your model missed

Cutoff dates are approximate and vendor-stated. The archive spans 2025-11-01 to 2026-08-25, 298 days. Get the same answer as JSON.

Patch your own context

const cutoff = '2026-05-01';
const gap = await fetch(
  `https://28081999.me/api/since/${cutoff}.json`
).then(r => r.json());

// gap.days        -> recorded days the model never saw
// gap.attention   -> what the most people looked up in that window
// gap.frontier    -> what developers discussed
// gap.research_count