NextLeap AI PM Fellowship (Top Fellow) capstone
Blinkit Flash: AI Shopping Assistant
A situation-first AI layer that turns a one-line need into a ready basket
Product Strategy | 0 → 1 Building
Flash in the live prototype
- Role
- Product Manager, built end to end
- Context
- NextLeap AI PM Fellowship (Top Fellow) capstone on Blinkit
- Research
- 3,776 customer reviews + 6 user interviews
- Built with
- Claude API, Next.js, Supabase, Vercel
3,776
customer reviews mined
92%
classifier agreement with human labels (κ = 0.89)
6
user interviews across 4 cities
1
clarifying question, at most
The problem
Blinkit owns the urgent, low-effort grocery trip, but customers don't think of it the moment a purchase needs reviews, comparison or return assurance.
What I did
Mined 3,776 customer reviews with an AI classification pipeline, ran 6 interviews, wrote the PRD and KPI framework, and shipped a live prototype of Flash.
The result
Found that consideration, not awareness, is the real bottleneck, and built a situation-first assistant that turns one line into a ready basket.
The tension
Blinkit has won the replenishment habit, and that same habit may limit category expansion. The better it gets at helping people retrieve what they already need, the less reason they have to explore.
Familiar purchase: low effort
Know the need → search → add → checkout. Fast, habitual, solved.
New category: high effort
Recognise → explore → evaluate → build confidence → purchase.
The target segment: high-frequency customers with narrow baskets. They already trust the platform and order often, but their purchases stay in familiar aisles.
Evidence, not assumptions
Instead of guessing where category expansion breaks, I combined public customer conversations, AI-assisted retrieval, structured behavioural tagging and human synthesis.
- 01
Collect
~3,776 public conversations: Play Store, App Store, YouTube, competitor reviews
- 02
Retrieve
Custom engine finds discovery and consideration talk: 711 candidates
- 03
Classify
AI tags stage, barrier, JTBD, category and confidence: 38 signals
- 04
Synthesise
Human review of high-confidence signals: 3 opportunity areas
The classifier agreed with 50 human labels 92% of the time (Cohen's κ = 0.89). The schema allows "unknown" when evidence is thin. Code is on GitHub ↗.
What the reviews showed
Only ~1.2% of conversations touch category discovery, but that thin signal is strikingly consistent. It lines up with three barriers: know ("I didn't know they sold this"), consider ("I know, but it's not where I'd buy it") and confidence ("I can see it, but I can't choose confidently").
Public data can see two of the three barriers. Consider barely shows up, because nobody reviews a platform they never thought of. That made it the priority question for interviews.
What interviews changed
Six in-depth interviews with high-frequency, narrow-basket customers in Bengaluru, Mumbai, Hyderabad and Delhi (~35 minutes each).
- 5 of 6
Went elsewhere
For their last non-grocery need, and 3 of them already knew Blinkit carried it.
- 4 of 6
Underestimated the range
Named fewer than half the non-grocery categories Blinkit sells.
- 4 of 6
Needed confidence
Wanted reviews, comparisons or return assurance before trying beauty or electronics.
The problem
High-frequency Blinkit customers order 4+ times a week, but their baskets stay in one or two categories. The moment a purchase needs reviews, comparison or return assurance, Blinkit isn't in the consideration set. It owns the urgent, low-decision trip, but it isn't yet the platform customers consider when a purchase takes thought.
Three options
- Option 1
Awareness campaigns
Push category ads. Solves know, but not consider: 3 of 6 already knew and still opened Amazon.
- Option 2
Discovery rails
Top picks and an AI next-product rail. Only reaches people already in the app, before consideration.
- Option 3 · Recommended
Flash
A situation-first AI layer. Describe the moment in one line and get a ready basket. Solves know, consider and confidence, with the highest build effort.
Nobody shops for a category; they shop for a situation. For products, Amazon is the default. For situations, there's no default yet, and that's the consideration set Blinkit can own.
The experience
- No searching. Describe a situation instead of hunting for products one by one.
- No decision fatigue. At most one clarifying question, then a complete basket.
- No forgotten items. Flash remembers what the situation needs.
Flash understands Hinglish too: "bacche ko bukhar hai", "my kid is burning up" and "fever 102 what do I do" all lead to the same fever kit. A child's fever leads to pharmacy, a new puppy to pet care, an exam tomorrow to stationery. The customer never picks a new category. The category comes with the solution.
How Flash works
Grounded, not guessed
Only real, in-stock SKUs. Responses follow a strict schema, so free text can't break the UI.
Confidence-aware
60%+ match builds the basket directly, 30 to 60% asks one question, under 30% shows suggestions.
Safe by design
Prompt-injection safe, medical caution, no upsell, no sensitive inference, and the customer always starts the conversation.
Cold start is easy: the grocery basket is already the signal. Shaving gel suggests razors, a thermometer suggests a fever kit. Built with Next.js, Supabase and the Claude API, deployed on Vercel.
Measuring success
- 01
Conversation successPilot target ≥70%
Users get a relevant basket with 0 to 1 clarifications.
- 02
New-category buyersTarget +20%
vs a control group of non-Flash users.
- 03
AOVTarget +₹125
Incremental value per order.
- 04
Repeat Flash useTarget >30%
Users come back to Flash.
- 05
AI qualityTargets
Intent accuracy ≥90%, grounding ≥95%, 0% hallucinated SKUs, under 3 seconds.
All targets are projections for a pilot, not shipped results.
Roadmap
- 0 to 3 months
Pilot
10 high-intent situations, 5% of users in one city. Validate impact and unit economics.
- 4 to 9 months
Expansion
50+ situations, voice input, 25% of users across more cities.
- 10 to 12+ months
Platform
Flash becomes the default discovery layer, with personalisation and cross-category intelligence.
NextLeap AI PM Fellowship (Top Fellow) capstone