About Lexablocks

Lexablocks is a project meant to help people learn languages in a compartmentalized way. You paste a sentence, and the tool breaks it into clickable blocks — one for each meaningful piece. Tap any block and you get an in-context grammar explanation in plain English: what this word is, what role it's playing in this sentence, and how it connects to what comes before and after it.

The mental model is play blocks. Each block is small enough to hold in your head on its own. Once you understand each one, they slot together and the whole sentence makes sense — not as a translation memorized, but as a structure you can see.

Under the hood, Lexablocks uses a large language model to do the grammar work. The model reads the sentence, segments it into meaningful pieces, labels each piece by its grammatical role, and generates an explanation tailored to the surrounding context. The result is not a dictionary lookup; it's a tutor-style breakdown where context matters — the same piece can mean different things in different sentences, and the explanation adapts.

The site starts with Japanese because that's where the learning friction is sharpest for English speakers — particles, conjugations, and word order all behave differently. The pipeline is language-agnostic, though, and the plan is to add Korean, Mandarin, and other languages as the project grows.

Lexablocks is free. There's a daily limit per visitor to keep costs sustainable. If you have feedback, ideas, or want to say hi, use the contact page.