Built for the Education track
Read the sounds.
Not the pictures.
DecodeFirst gives early readers short, genuinely decodable passages. When a word gets sticky, it coaches each grapheme from left to right—without ever turning the answer into a guess.
No account needed for the demo. Microphone audio never leaves the browser.
Level 1 · s a t p i nTap a sticky word
Pat sat in a pit.
Sound it out
pit
/p/ · then /i/ · then /t/ · blend
A trustworthy generation loop
The model drafts. The code decides.
01
Constrain
GPT-5.6 gets the exact cumulative word bank—not a vague reading-level prompt.
02
Validate
Every token must be in the hand-verified bank or the small heart-word allowlist.
03
Coach
A miscue becomes a left-to-right sound routine, never a picture or context guess.