AI Tutor

AI tutor for exam-prep and training companies

Short answer

It answers learners' questions only from your course material and shows which lesson or page the answer came from. When it does not know, it says "I don't know" and points the learner to a person. You start with a $750, one-week test.

Northstr is an AI consultancy that builds private AI assistants on a company's own material. This page is for US companies that sell exam-prep or certification courses, such as electrician, HVAC and contractor training, real estate, healthcare certificates and IT certificates.

What it does

Learners ask a question in plain English. The tutor looks only in your course material and replies from it.

  • It answers only from your own course material.
  • It shows the source, which lesson or page the answer came from.
  • When the material does not have the answer, it says "I don't know" instead of guessing, and points the learner to a person.
  • Your staff can see what learners ask. This helps you spot confusing lessons and gaps in your material.

The 3 steps

Step 1

Hundred Questions

$750
1 week

A working tutor on a sample of your course material. You send 100 real learner questions and a person checks every answer.

Read more →
Step 2

Full build

From $3,000
About 3 more weeks

The tutor built on all your course material and handed over to you.

Step 3 · Optional

Monthly support

On the call
Month by month

We keep it working after handover. The price is given on the call.

Your fixed build price is in your Hundred Questions report. The price goes up if your documents live in more than one system, include scanned pages or tables, need different access for different people, automatic updates, or more than one language.

It is fine to stop after step 1.

What is in and what is out

In

  • A tutor that answers from your course material
  • Sources shown with each answer
  • "I don't know" and a pointer to a person when the material does not say
  • A test on your own learner questions, checked by a person
  • Staff view of what learners ask
  • Handover to you

Out

  • Writing or grading your tests
  • Answers from outside your course material
  • Changing your course material
  • Anything not agreed on the call

Timeline

  1. Week 1: Hundred Questions

    Sample material in, working tutor built, 100 questions checked, report delivered.

  2. About 3 more weeks: full build

    The tutor is built on all your course material.

  3. Handover

    It is handed over to you. Optional monthly support can follow.

What you get

  • The Hundred Questions report: right, wrong and "I don't know" answers, each checked by a person, with what we would change.
  • A working AI tutor on all your course material.
  • Handover of the tutor to you.

Proof

Our proof so far is an AI tutor for an education company in a regulated industry. No made-up answers were seen in 150 test messages, each read by a person. Wrong "I don't know" replies went from 6 to 0 on 35 test messages about terms in the material. The AI fees were $2.52 for 684 AI answers, about $0.004 each (716 replies, 684 by the AI). Read the case study.

One tutor on one set of material is not a guarantee for yours. That is why we test first.

Questions

What is an AI tutor?

It is a tutor your learners can ask questions in plain English. It answers only from your course material and shows which lesson or page the answer came from.

What does it do when it does not know?

It says "I don't know" instead of guessing, and points the learner to a person. We test this on your own learners' questions in the Hundred Questions step.

Can our staff see what learners ask?

Yes. Your staff can see the questions learners ask. This helps you spot confusing lessons and gaps in your material.

What does it cost?

Hundred Questions: $750, 1 week. Full build: from $3,000, about 3 more weeks. Your fixed build price is in your Hundred Questions report.

Can we stop after the first step?

Yes. It is fine to stop after Hundred Questions. You keep the report.

Who builds it?

Vipul Mehra builds the systems and Priyanka, co-founder, does the model evaluation. We are based in Delhi NCR, India, and work with US companies.

Start with 100 questions

$750, 1 week. See how the tutor answers on your own course material before you commit to more.