PodVault – Private Q&A for podcast archives

Turn a podcast's episode transcripts into a high-quality Q&A site without a closed NoTeLLM API

Problem

A user wants to build a chat-interface site on top of a 300-episode podcast. They have transcribed 20+ episodes, but multi-host episodes make the text fragmented, and a generic LLM gives incomplete or missing answers. Trying Google NoTeLLM worked astonishingly well — but it has no external API, so the project stalled.

Solution

A self-hosted or small SaaS tool that ingests podcast audio or existing transcripts, does speaker separation and topical chunking, builds a timestamped index, and answers with citations and time points. The value is a solid retrieve-and-cite pipeline, not a new model.

Users

Heavy podcast listeners, creators building Q&A sites for their podcast or course, small online-education teams

MVP

Upload audio or VTT/SRT transcripts; speaker separation and topic chunking; timestamped retrieval and citations; one-shareable-channel Q&A page; skip multi-tenant and payments

Revenue

Creator subscription (hosted site) plus a self-hosted buyout; listener pages can carry light donations or brand placements

Why now

Podcast transcription is cheap enough to batch, RAG and vector retrieval are commodity, and creators are actively looking for open NoTeLLM alternatives — an indie dev can ship a usable version in a week