The model is not the product. The mechanism is.
Six deterministic Spaces that look like AI magic and contain no model at all. No accelerators, no weights, no hosted inference. Open one and inspect the arithmetic behind the answer.
THE SPACES
open a Space, inspect the arithmeticCount Every Prime
Sieve of Eratosthenes
One byte per candidate, exact for every bound, and no floating point in the hot loop.
Search Without a Vector
Okapi BM25
A visible inverted index, per-term score contributions, and a query trace.
The Next Word
Word n-gram
A finite transition table with seeded sampling and every decision printed.
Best Rank-k Image
Truncated SVD
The best low-rank approximation in the Frobenius norm, plus the residual.
Connect Four
Negamax / alpha-beta
Deterministic game search with a fixed node budget and zero learned weights.
Shortest Route
A* search
Clickable weighted terrain, with Dijkstra and greedy baselines on the same map.