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Labs

Find what works. Share it with everyone.

We measure everything that tells us whether people learn: what they knew, what they know now, and what they can do with it. Then we publish what we find, so everyone can build on it.

Two researchers lean over printed charts on a shared desk, one marking a curve in pencil.
IProducts

Measure the learning.
Not the clicks.

Three tools that tell us, and everyone else, whether a product helps people learn.

Labs · Open benchmark

Delta

Most evaluations reward the right answer. Delta measures the student: what they knew before, and what they know after.

  • Scores any AI tutor, on any model.
  • Rewards teaching, not answering.
  • Open method, open test sets, open scores.
Read the announcement
Two copies of the same quiz on a desk, before and after, with a pencil between them.

  • Cohort

    Simulated and real students

    Simulated students to test tutors at scale, and panels of real students from around the world, of every age and background, to check the results.

  • Proof

    Research

    Tests every product against the research on learning, and runs new studies where the research is missing.

    Used inHomeSchoolCampusWorkServiceField
IIHow we work

What can you do now
that you could not do before?

  1. 01

    Learning is the measure

    Not time on screen, not clicks, not smiles. What a person can do after, that they could not do before.

  2. 02

    Publish everything

    Methods, data and results are public, so anyone can check them and build on them.

  3. 03

    Built on research

    Proof connects every product to decades of learning science, and adds to it.

IIIWhere it runs

Labs in every place.

Education is freedom.
We’re making it free.
Join us.

Researchers and engineers who want their work measured in learning gains, and universities that want to study what works in the open.