pona
pona is a GPT learning to actually speak a language: Toki Pona — about 130 words, 14 letters, no inflection — is small enough that a studio-scale model can get it right, and “right” is machine-checked by a real grammar checker. The model is word-level, so its ~368-token vocabulary is the keyboard below: every word it knows is a key, and as you compose, the suggestion strip shows the five words it expects next. It speaks as ilo.
o toki tawa ilo! — say hi. Type below or tap the keys; the model answers word by word.
next wordtap a key or start typing — the model wakes on first touch
a sample of the keyboard — the released model's full vocabulary becomes the keys.