Evidence · first-party tested

Across the benchmark, voice preservation was rated 4.3/10; speech stayed understandable, but the speaker's tone and character changed noticeably.

⚠ Struggled🧾 artifact-verified2.15 / 5Tested Jun 16, 2026Cleanvoice →
Output — unretouched
Cleanvoice — Cleanvoice's AI.mp4
Cleanvoice — Cleanvoice's AI.mp4
The observation

Across the benchmark, voice preservation was rated 4.3/10; speech stayed understandable, but the speaker's tone and character changed noticeably.

Criterion: Voice Preservation ·
Query this
get_evidence({
  tool: "cleanvoice"
})
MCP · mcp.aidemos.com/api/mcp
Free with attribution.
Real outputs, no retouching · every cell queryable via API & MCP · aidemos.com