Evidence · first-party tested
On the clean-input test, the third output was described as around 80% human-like but still had occasional imperfections and some synthetic characteristics, so the naturalness ceiling was good but not fully human.
The observation
On the clean-input test, the third output was described as around 80% human-like but still had occasional imperfections and some synthetic characteristics, so the naturalness ceiling was good but not fully human.
Criterion: Naturalness · Scenario: High-Quality Voice Sample (group: voice-cloning-inputs)
Query this
get_evidence({
tool: "heygen",
scenario: "voice-cloning-inputs"
})MCP · mcp.aidemos.com/api/mcp
Free with attribution.
Free with attribution.
Same input, other tools
Real outputs, no retouching · every cell queryable via API & MCP · aidemos.com