pricing

Free forever for one person. Pay when you're ready to fine-tune.

for one person, any age

Understand how AI thinks. Then teach one yourself.

You assemble the four blocks into a working language model and watch it reason, step by step. Everything else — the practice packs, Blockswork, Richard — sits on top of that. The Builder itself is free forever, and it is the whole thing, not a trial.

Free

Builder

$0/ forever

No account required to try it.

All four blocks — watch a sentence become an answer, one step at a time
One Build, kept forever, and a 6,000-word bank to build it from
Every answer traces back to the step that produced it
Full accessibility settings — palette, sound, custom labels
Glossary & concept docs
Works on web and mobile

Paid

Fine-Tune

$3.99/ month

or $29.99/year — includes every new concept module as they ship

Everything in Free
Fine-tuning — set how much your build leans on what you taught it
Before / after output comparison
New concept modules as the field evolves — included, not sold separately
Richard — 50 conversations / month
Live human support

Pro

$29.99/ month

or $299.99/year — Richard is trained exclusively for YDABlocks, not a general-purpose chatbot

Everything in Fine-Tune
Multiple Builds — run more than one model at once and compare how they reason
Richard — a chat companion trained on YDABlocks itself, for asking why your build answered the way it did
300 Richard conversations / month (up from 50)
Also included: 26 subject packs — Math, Science, ELA, coding, arts, test prep, and 13 full languages
Also included: Blockswork — 33,500+ skills across 8 subjects, taught before tested, with your level worked out rather than assumed and wrong answers that say what was misunderstood

Households

Family

$59.99/ month

or $599.99/year — one plan for up to 7 people

Everything in Pro
5,000 Richard conversations / month, shared across everyone on the plan
Multiple Builds each
All 26 subject packs and Blockswork, with each person's own skills and levels

for schools & institutions

The AI literacy your curriculum is missing — not another practice tool.

Students build a working language model and watch it reason, so “how does AI decide that?” stops being a thing adults guess at. The subject packs and Blockswork come with it. Start with one school and grow to the district whenever you're ready.

Small School

Custom pricing

Per-student, billed annually

Every teacher and student at one school. Admin dashboard, school-wide completion view, metered Richard access. Live human support included.

Best for: a school under ~500 students.

District Standard

Custom pricing

Per-student, billed annually

District-wide rollout, one subject band, Richard access included. Live human support included.

Best for: multi-school districts standardizing on one tool.

District Premium

Custom pricing

Per-student, billed annually

Full subject library, unlimited Richard access, custom branding, priority support.

Best for: districts making YDABlocks a cross-curricular platform, not a supplemental tool.

Talk to us about pricing →