Under the Hood — Vol. 01
So, what's it thinking?
Under the Hood is a biweekly session by FastCode AI for people who use AI daily and are done pretending they know how it works. This time: how a language model actually turns your prompt into an answer.
- Date
- Saturday, 26 September 2026
- Time
- 6:00–7:30 PM IST · doors 5:45 PM
- Format
- Talk + live walkthrough + Q&A · 90 min
- Where
- Bengaluru · venue to be announced
- Cost
- ₹299 · 150 seats
- Cadence
- Every alternate week, twice a month
About the series
One thing you use every day. Fully opened up.
Under the Hood is FastCode AI's biweekly session for the AI-curious — people who prompt, build, or manage with AI constantly, and want to actually understand the thing they're using, not just get better at asking it questions.
No buzzwords, no "10x your workflow" energy. We pick one thing everyone uses and take it apart, live, until it stops feeling like magic.
Who shows up
A glimpse of the room
- PMs who ship AI features and got tired of nodding through engineering syncs
- Engineers who use LLMs daily but have never opened up what's inside one
- Founders building AI products who want to out-think, not just out-prompt, competitors
- Students figuring out if AI/ML is actually for them, before committing to a degree
- The friend who explains AI news to your group chat and wants to actually be right
Who this is for
You should come if
- You use AI tools daily but couldn't sketch how one actually produces an answer
- You're done with LinkedIn AI takes and want the version with no marketing in it
- You're weighing a move into AI/ML and want a real starting point, not a course ad
- You've shipped an AI feature and want to understand what's happening past the API call
- You just want a room full of people who ask "wait, but how" instead of nodding along
Vol. 01 — What's covered
Your prompt just went in. Here's what happened next.
We'll trace one real prompt through an entire language model — tokens in, tokens out — and stop at each part long enough for it to actually make sense.
- 5:45 PM
Doors open
- 6:00 PM
Why this exists
A quick, honest framing: what 'understanding AI' means once you strip out the hype.
- 6:10 PM
Turning words into numbers
Tokenization and embeddings — how your sentence becomes something a model can compute on.
- 6:30 PM
What attention is actually doing
A plain walkthrough of the mechanism every modern model runs on, with a live visualization on real text.
- 6:55 PM
From next-word guesses to a full answer
How the model goes from predicting one token to producing the reply you actually read.
- 7:15 PM
Open floor
Bring your own "wait, but how does it—" questions. This part usually runs long, on purpose.
Presented by
FastCode AI
Your friendly neighbourhood AI lab · fastcode.ai
- Built AI systems for Mercedes-Benz, Bosch and Aramco
- Runs AI MasterClass, an 8-week applied AI course
Session led by Dr. Arjun Jain, Chief Scientist
Where
Bengaluru
Venue to be announced. Registered attendees get the address by email before the session.
Reserve a seat
₹299 to get in. 150 seats.
First come, first in. Your ticket arrives by email the moment you've paid, and the venue address follows before the session.
Ticket policy
- Tickets are non-refundable.
- Can't make it? Reply to your ticket email at least 24 hours before the session with the name and email of the person taking your seat, and we'll move the ticket to them.
- If we cancel or reschedule, you get a full refund.