S// LABSVERIFIED
PROJECT DOSSIER REF: S//FV-2026
★ OpenAI × NIAT Buildathon Finalist & Runner-Up

FOUNDER
VOICE.

An AI investor that pressure-tests startup pitches before the real room does.

BUILD STATUS:● SHIPPED & TESTED
SANDESH'S ROLE:Lead Architecture, Voice AI & Full-Stack
END-TO-END TARGET:Sub-450ms Latency
SECTION 01 //THE PAIN POINT

WHY DO FOUNDERS FAIL IN VENTURE MEETINGS?

Founders spend weeks refining pitch decks with friends, advisors, and colleagues. But polite practice creates dangerous false confidence: people who care about you rarely ask brutal questions about market size, churn assumptions, or defensive moats.

When founders finally step in front of institutional venture partners, they get blindsided within the first three minutes by difficult unit-economics questions they have never rehearsed out loud.

SECTION 02 //THE MECHANISM

THE NON-SYCOPHANTIC AI INVESTOR

Founder Voice removes sycophancy entirely. By tuning system prompts and reasoning temperatures, the AI partner behaves like a partner at a top-tier venture firm: polite, articulate, but aggressively probing every vulnerability in the founder's thesis.

INTERACTIVE PITCH CRITIQUE SIMULATORSELECT SCENARIO:
FOUNDER SPOKEN PITCH:?

“We are building an autonomous agent for hospital billing workflows that cuts billing cycle delay by 60%.”

AI INVESTOR RETORT (VOICE STREAM):

“Healthcare billing has 9-to-12-month enterprise procurement cycles and draconian HIPAA audits. Your CAC will easily exceed $8,000 before your first pilot renewal. How does an early team survive that cash burn?”

FLAGGED RISK: Procurement Cycle & High CAC-20 pts on Cash Runway
SECTION 03 //ENGINEERING ARCHITECTURE

SUB-400MS STREAMING PIPELINE

Human conversations break immersion if pauses between turns exceed 500 milliseconds. To solve this, we decoupled the architecture into concurrent streaming micro-pipes.

01. CLIENT & AUDIO INGESTIONNext.js 15 · Web Audio API · MediaRecorder

Streams 16kHz PCM audio chunks over low-latency WebSockets while parsing PDF slides via PDF.js into structured text and tabular data.

02. REAL-TIME SPEECH-TO-TEXTDeepgram Nova-2 API

Performs real-time streaming speech transcription with sub-150ms word-level latency, punctuated sentence boundaries, and filler-word normalization.

03. ADVERSARIAL REASONING ENGINEGroq Cloud · Llama 3.3 70B Versatile

Executes a multi-phase system prompt instructing the model to act as a seasoned, adversarial venture partner with zero sycophancy, seeking unaddressed risks at >300 tokens/sec.

04. STREAMING SPEECH SYNTHESISDeepgram Aura (Asteria Voice)

Streams human-quality conversational audio directly back to the founder's earphones, delivering responses before natural human conversational turn-taking timeouts.

05. PERSISTENCE & SCORECARDSupabase · PostgreSQL · Row Level Security

Stores pitch transcripts, extracted slide embeddings, question history, and outputs an audit scorecard ranking Market Size, Moat, and Team Conviction.

SECTION 04 //OUTCOMES & LESSONS

WHAT THE BUILDATHON TAUGHT ME

01. STREAMING OVER BATCHING

Waiting for the LLM to generate an entire paragraph before sending it to text-to-speech guarantees a 2-second delay. Feeding sentences to the TTS synthesizer as tokens arrive is essential for conversational reality.

02. TOUGH GUARDRAILS REQUIRE CONTEXT

If the model only knows general venture principles, its critiques become cliché. Extracting the real deck metrics (TAM, pricing, acquisition channel) gives the critic legitimate teeth.

03. PRESSURE ACCELERATES SHIPPING

Shipping in a 48-hour buildathon forces ruthless prioritization. Every feature that doesn’t directly serve the core audio loop gets cut, resulting in a cleaner, more focused product.

04. BUILDATHON RECOGNITION

Selected as the Finalist (Runner-Up) in the OpenAI × NIAT Buildathon, validating both the technical execution and the emotional urgency of the user problem.