18/12/2025
Your eyes and ears will fail this test.
I built a digital twin with HeyGen + ElevenLabs.
This video is the training clip.
Burned-in captions included.
One sentence is spoken by my AI twin.
Three lessons from the build:
Support matters.
↳ HeyGen support replied within an hour, more than once.
↳ The UI for integrating ElevenLabs voice is not friendly.
Accent defaults matter.
↳ My voice kept drifting to a US accent.
↳ Fix: select “Original accent” in ElevenLabs.
Training matters.
↳ HeyGen wants 2–5 mins for a hyper-realistic avatar. I gave it 8 mins.
↳ ElevenLabs voice quality tracks clean audio. I’ve fed 45 mins so far.
Your mission:
Comment the exact sentence you think came from the twin.
Rule going forward:
Black outfit or black accessory means the twin speaks.
Shirt. Hat. Sunglasses.
Which sentence was AI?