Vibe(?) coded this AI podcast tool with 10K lines of code in one month

A walkthrough of building an AI‑powered podcast tool in a month, covering design, Gemini/Claude models, transcript generation, speaker editing, and contextual chatbot integration.

Overview

1.What I learned in this vibe coding journey:

To build a product not demo: vibe coding is not there yet but could definitely save time
Best model and tool: Gemini 2.5 pro and Claude 3.5+, I used Sublime + Chatbot, not Cursor or Windsurf because of token limit
Some useful tips: Using templates from Vercel, AI SDK is great to add a built-in chatbot (3 files and maybe ~100 lines of code)

2.About this AI podcast tool:

designed for long, conversational podcasts
key features:
Search episodes by name or paste URL
Generate speaker-separated transcripts from audio
Edit speaker names and filter by speaker
Auto-scroll and highlight transcript while playing
Click any timestamp to jump and play
AI chatbot with full podcast context to answer any question

Links

Tech stack