Transcreve.ai
AI transcription SaaS: +6,000 active users, ~10% Premium, Stripe checkout, and 100% automated sales/support agents — Vibe Code case study.
The Challenge
Transcreve.ai was born to solve a massive pain point in Brazil: hours wasted listening to WhatsApp audios, meetings, and videos. The challenge was not just to "build a website" — it was to launch a complete SaaS with accounts, plans, checkout, processing queue, transcription with Whisper optimized for PT-BR, and operations that scale without a human team on every ticket.
We needed a product in production with AI agents (sales, support, and Stripe checkout) running 100% automatically — from acquisition to payment and customer service.
The Solution
With Vibe Code (Kaizen Labs), we built the end-to-end product at transcreve.ai:
- Landing + app: upload, YouTube, folders, history, and Free / Basic / Pro plans
- Email transcription: forward to
agente@transcreve.aiand receive a ZIP with the text - Product AI: Whisper optimized for Brazilian Portuguese (~98% accuracy)
- AI agents: sales, support, and online consultant — operation without human queue
- Stripe checkout: subscriptions and premium upgrades 100% automated
Result: a live SaaS with thousands of active users and recurring monetization — the anchor case of Vibe Code's potential at Kaizen.
Services Provided:
The Results
Product in real scale, not a prototype:
- +6,000 active users
- ~10% on the Premium plan (recurring monetization via Stripe)
- +10,000 audios already transcribed on the platform
- Operation 100% automated with AI agents (sales, support, and checkout)
- Differential: unique direct transcription flow via email + native WhatsApp OPUS
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Transcreve.ai Home — AI transcription optimized for PT-BR
Transcreve.ai
Want a SaaS with AI agents like Transcreve.ai?
From landing to Stripe checkout and automatic support: a product in production with thousands of users. Talk to Kaizen.