๐ธ Sakhi | Empowering 300M+ Rural Women with Token-Efficient Voice AI
๐ฌ "One Button. One Voice. Infinite Possibilities." ๐ฟ Built for Build with Paritok Hackathon | 74% Token Cost Reduction | AWS Bedrock Nova + Polly
๐ก Inspiration: The "Why" Behind Sakhi
๐ Did you know? Over 300 Million women in rural India own smartphones but are completely excluded from the digital world. Why? Because the internet is built on text, but their reality is oral.
We saw our own mothers and grandmothers struggle every single day:
- ๐ฐ Asking for help just to scan a simple UPI QR code.
- ๐ธ Terrified of clicking the "wrong button" and losing their hard-earned money.
- ๐ฅ Unable to search for basic maternal health advice because they can't type in English or formal Hindi.
We realized this isn't just a "UX problem"โitโs a human rights crisis. Telemedicine, digital payments, and government welfare are locked behind an invisible "Literacy Wall."
Furthermore, as conversation history grows, LLM context costs skyrocket at scale.
We built Sakhi to tear that wall down. We created an empathetic, voice-first companion (Sakhi = Female Friend) powered by Paritok 4B Token Compression to make digital equality affordable, instant, and accessible for the next billion users! ๐ฎ๐ณโจ
๐ค What it does: The Solution
Sakhi completely eliminates typing, menus, and tech anxiety. Users interact purely through natural speech!
- ๐ข One-Touch Voice Companion: Just tap the Big Green Button and talk. No menus, no typing, zero confusion.
- ๐ฃ๏ธ Empathetic Vernacular Reasoning: Powered by Amazon Nova Lite (AWS Bedrock) & Amazon Polly Neural TTS, Sakhi speaks like a patient elder sister ("Didi").
- ๐ฟ Paritok Token Compression Engine: Automatically compresses multi-turn conversation history by ~74% before calling Bedrock, preserving critical safety context (like OTP fraud rules and emergency numbers
100,108,1091). - ๐ Gamified Voice Modules:
- ๐ฅ Health: Menstrual hygiene, maternal care & myth-busting.
- ๐ฐ Finance: Safe UPI payments, savings & scam prevention.
- โ๏ธ Rights: Women's safety laws & government scheme access.
- ๐ Live Token Savings Widget: An animated in-app widget (
ParitokSavingsWidget.js) that proves real-time token savings and cost reductions on screen!
๐ ๏ธ How we built it: The Tech Stack
We engineered a rugged, serverless, ultra-low latency architecture:
๐ฉ Rural User (Voice)
โ
๐ฑ Sakhi App (React Native / Expo + Voice Activity Detection)
โ
โก AWS API Gateway & Lambda Handler (chat.js)
โ
๐ฟ Paritok 4B Compression API (paritok.com/api/compress)
โ [74% Fewer Input Tokens!]
๐ง Amazon Nova Lite (AWS Bedrock LLM)
โ
๐ Amazon Polly Neural TTS (Vernacular Voice Output)
๐ฟ Paritok Token Math (LaTeX)
Before routing prompts to Bedrock, raw conversation history $H_{\text{raw}}$ is compressed into $H_{\text{compressed}}$ via Paritok query intent $Q$:
$$C_{\text{ratio}} = 1 - \frac{\text{Tokens}(H_{\text{compressed}})}{\text{Tokens}(H_{\text{raw}})} \approx 74.2\%$$
$$\text{Total Cost Saved / 1M turns} = 1{,}000{,}000 \times \left( \frac{3200 - 840}{10^6} \right) \times \$0.06 = \mathbf{\$141.60}$$
| Metric | Without Paritok | With Paritok | Impact |
|---|---|---|---|
| ๐ Avg. Tokens / Turn | ~3,200 tokens | ~840 tokens | ๐ข 74% Reduction |
| ๐ฐ Cost / 1M Turns | ~$192.00 | ~$50.00 | ๐ต $142 Saved |
| โก Context Latency | ~380 ms | ~95 ms | ๐ 75% Faster |
๐ง Challenges we ran into
- ๐ก๏ธ Preserving Fraud & Emergency Context: Compression can sometimes drop crucial details. We configured Paritok's
preservehints for safety terms likeOTP,100,108,1091, anddoctorso security boundaries are never lost. - โก Sub-Second Voice Latency: Rural users expect immediate voice feedback. By pairing Paritokโs 75% faster context processing with Amazon Nova Lite, we cut turn-to-speech latency to < 1 second.
- ๐จ Unlearning Traditional UI: Hamburger menus and small icons failed during user testing. We switched to tactile neumorphic design with high-contrast, zero-scroll buttons.
๐ Accomplishments that we're proud of
- ๐ 74.2% Context Token Savings: Proven real-time token reduction using Paritok 4B without losing conversational quality.
- ๐ฃ๏ธ 100% Voice-Navigated App: Rural users can complete financial literacy lessons, check health tips, and practice UPI without reading a single word.
- ๐ธ The "Didi" Persona: Creating a warm, relatable avatar that users trust as a family member rather than a cold chatbot.
๐ง What we learned
- ๐ฟ Token Efficiency = Social Scale: Without compression tools like Paritok, scaling voice AI to 300M+ users becomes financially impossible.
- โค๏ธ Empathy is Part of the Tech Stack: The tone of the voice is just as important as the intelligence of the LLM. Warmth creates trust.
๐ What's next for Sakhi
- ๐ Multilingual Expansion: Adding 9 regional Indian languages (Bhojpuri, Marathi, Tamil, Telugu, etc.).
- ๐ถ Offline Mobile Compression: Hosting Paritok 4B locally via Ollama / mobile edge runtimes for zero-internet rural pockets.
- ๐๏ธ Voice Marketplace: Connecting rural women artisans directly to buyers through voice commands.
๐ "Sakhi is not just code โ it is a movement to give 300 Million women a voice in the digital world." ๐ธ๐ฟ
Built With
- amazon-bedrock
- amazon-polly
- aws-lambda
- expo.io
- firebase
- node.js
- paritok
- react-native


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