AI · Doubt Chatbot & Chat-with-PDF

Give every learner a 24/7 tutor who knows your syllabus by heart.

Vacademy's AI Doubt Chatbot answers learner questions from your own course material — chapter PDFs, lecture videos, notes, past Q&A — not generic internet content. It cites the source, opens to a practice mode, escalates to a human mentor when needed, and runs in 30+ languages.

  • Grounded in your PDFs · cites the page
  • Chat · voice · WhatsApp · in-course widget
  • Escalates to human mentor with full context
  • 30+ languages including Hinglish
Doubt Chatbot · Algebra · Sara (Class 9) · Hinglish
Grounded · v2.4
Sir, slope-intercept form ka equation kya hota hai? Ek example bhi bhejo.
Slope-intercept form is **y = mx + c**, where *m* is the slope and *c* is the y-intercept. **Example:** y = 2x + 3 — slope = 2, y-intercept = 3.
linear-equations.pdf · p.47
Practice problem do na, similar?
Sure! Find slope and y-intercept of: **y = −4x + 7**
Practice mode
Ask anything — chat or speak…Send
Conversation routing
  • Intentpractice-mode
  • Confidence94%
  • Escalate to mentor?No
  • ChannelIn-course widget
Top cohort doubts · last 7 days
  • What is slope?142×
  • y-intercept vs x-intercept98×
  • Parallel lines slope rule73×
⚡ 3rd-most-asked doubt isn't in your notes · flag for SME review.
Answered: 142 questions today · 6 escalated to mentors · 1 syllabus gap flagged · 0 hallucinated answers (all cited).

Why teams switch

The status quo is costing your team time and money

Doubt resolution is your worst SLA

Learners ask the same 15 questions a hundred times per cohort. Mentors spend evenings re-typing the same answer. By the time you reply, the learner has moved on or quit.

Sub-second response, 24/7, in any language

Generic AI chatbots hallucinate your syllabus

ChatGPT and Gemini don't know your specific syllabus, your past papers, or your notation. They invent confident-sounding wrong answers and erode trust.

Answers cite your PDF page — verifiable

WhatsApp doubt groups are unmanageable

A 200-learner WhatsApp group means 600+ messages a day, none of them searchable, all of them flooding your mentors' phones.

1:1 chatbot replaces noisy WhatsApp groups

Inside the chatbot

Grounded answers, cited sources, smart routing

Watch a real Hinglish doubt resolve with chapter-level citations, intent classification, and analytics — all on one screen.

Doubt Chatbot · Algebra · Sara (Class 9) · Hinglish
Grounded · v2.4
Sir, slope-intercept form ka equation kya hota hai? Ek example bhi bhejo.
Slope-intercept form is **y = mx + c**, where *m* is the slope and *c* is the y-intercept. **Example:** y = 2x + 3 — slope = 2, y-intercept = 3.
linear-equations.pdf · p.47
Practice problem do na, similar?
Sure! Find slope and y-intercept of: **y = −4x + 7**
Practice mode
Ask anything — chat or speak…Send
Conversation routing
  • Intentpractice-mode
  • Confidence94%
  • Escalate to mentor?No
  • ChannelIn-course widget
Top cohort doubts · last 7 days
  • What is slope?142×
  • y-intercept vs x-intercept98×
  • Parallel lines slope rule73×
⚡ 3rd-most-asked doubt isn't in your notes · flag for SME review.
Answered: 142 questions today · 6 escalated to mentors · 1 syllabus gap flagged · 0 hallucinated answers (all cited).

How it works

Your content becomes a personal tutor

Vacademy ingests your course material into a vector knowledge base, then runs a retrieval-augmented chat agent with intent classification, escalation routing, and structured citations.

01

Ingest your content

Upload chapter PDFs, lecture videos (transcribed), notes, past Q&A archives, and slide decks. Vacademy embeds and indexes everything per-institute.

02

Learner asks a question

Via the in-course chat widget, the standalone web app, WhatsApp, or voice. Intent classifier routes to doubt-mode, practice-mode, or human-escalation as appropriate.

03

Answer with citations

Retrieval-augmented generation answers from your content with explicit citations (page X of chapter Y). Math, code, and diagrams render inline. Hindi / Tamil / regional languages supported.

04

Escalate when stuck

If the AI's confidence drops below a configurable threshold — or the learner explicitly asks — the conversation routes to a human mentor with the full chat history pre-attached.

What's inside

An AI tutor designed for academies, not consumers

Map these to your workflow →

Grounded in your content

Answers come from your chapter PDFs, slide decks, lecture transcripts, and past Q&A — never generic web content. Citations to the source page are mandatory, not optional.

Doubt mode vs practice mode

Intent classifier detects whether the learner wants a quick answer, a worked example, a similar practice problem, or a step-by-step walkthrough — and adapts accordingly.

Multi-channel: chat · voice · WhatsApp

Web chat widget inside courses; standalone web app; WhatsApp two-way messaging; voice agent for hands-free study. Same answer, same source of truth.

Human-mentor escalation

When confidence drops or topic is sensitive, the AI hands off to a human mentor with the full transcript, current learning context, and suggested response.

Multilingual + code-switching

Hindi, Tamil, Bengali, Marathi, Arabic, Mandarin, Spanish — plus Hinglish-style code-switching. Math notation renders correctly in every language.

Conversation analytics

See the top 50 doubt patterns across the cohort. Spot content gaps in your syllabus from real learner questions, not surveys.

Why this changes the cohort economics

Doubt-resolution at scale, mentor time saved

24/7
Availability

Learners get answers at 2am during exam week, not 'next mentor call'.

−72%
Mentor doubt load

Avg drop in repetitive doubt-tickets handled by human mentors.

92%
First-touch resolution

Cohort questions resolved without escalation in production deployments.

+31%
Cohort completion

Learners with timely doubt-resolution finish more chapters than those without.

Wired into the platform

The chatbot is connected, not a separate widget

Every conversation is a structured signal — for syllabus gaps, mentor routing, and revenue. The chatbot doesn't just answer; it changes the next step.

If a learner asks the same question 3+ times, auto-trigger a remedial micro-course.

Surface the top 10 cohort-wide questions in next week's teacher planner.

Escalate paid-tier learners' doubts to senior mentors automatically.

Push WhatsApp summary of unresolved doubts to mentors at end of day.

Built for every team

How different roles use the Doubt Chatbot

Learners

  • Get answers at 2am during exam week
  • Ask in Hinglish; get answers with diagrams + steps
  • Skip the embarrassment of asking 'basic' questions in class

Teachers / Mentors

  • Stop answering 'what is slope?' for the 47th time
  • Focus on harder, escalated doubts with full context
  • See real cohort doubt patterns weekly

Operations

  • Cut mentor headcount need by 30–50% as cohorts scale
  • Replace WhatsApp doubt groups with a searchable workspace
  • Use the analytics to refine syllabus and notes

Customer spotlight

JEE coaching · 4,200 learner cohort

Doubt-resolution went from 'within 24 hours, hopefully' to '6 seconds, always'. Our mentors stopped retyping the same answers and started doing higher-value 1:1 sessions. The chatbot also surfaced a content gap in our Class 11 chemistry notes — we'd have never spotted it.

Academic Head, JEE Coaching Institute

Avg doubt-resolution time: 24 hrs → 6 seconds
Mentor weekly hours on repetitive doubts: 38 → 11
1 cohort-wide content gap surfaced from 14 days of chat analytics

Frequently asked

Common questions from buyers

How is this different from ChatGPT?+

Two things: (1) it's grounded only in *your* content — your chapter PDFs, lecture transcripts, past Q&A — not the open internet, so it can't hallucinate your syllabus; (2) it cites the exact page/slide where the answer came from, so learners and mentors can verify.

Will it answer outside the syllabus?+

By default the chatbot stays within your content. If a learner asks something genuinely off-syllabus, it can either say 'this isn't in our syllabus' or, with your config, fall back to general knowledge with a clear disclaimer. You control the policy.

Does it support voice?+

Yes — a voice agent answers spoken questions with spoken replies, useful for revision during commutes or for visually-impaired learners. Same knowledge base, same citations (read aloud).

Can mentors take over a chat?+

Yes. Mentors see all conversations in real time and can take over any chat with one click. The handoff preserves context — they don't have to ask the learner to re-explain.

What data does Vacademy store / train on?+

Your content is indexed only for your institute and never used to train shared models. Chat transcripts stay in your tenant. You control retention (default 90 days, configurable).

From WhatsApp chaos to 24/7 tutor

Send us one chapter — we'll spin up a chatbot you can question.

Bring a chapter PDF (in any language). In a 30-min session we'll ingest it and let you ask any question — you'll see grounded answers, citations, escalation flow, and analytics.