The voice output was stable and natural with no major inconsistencies.
What was measured
Voice quality
Whether the generated voice sounds natural, matches the avatar, uses correct emphasis, and feels like a convincing real creator.
decisive for this rankingtransformation
A UGC ad depends on a natural-sounding creator voice; robotic delivery or bad emphasis directly undermines the ad’s effectiveness. (3 of 3 judges)
What was given, what came back
Test input: Duolingo – Mobile App · text
Input — what we sent
The exact prompt
Product URL: https://www.duolingo.com/ Exact Script Hook: Learning a new language has never been this easy. Script: I've been using Duolingo for a few minutes every day, and it's made language learning simple and fun. The short lessons are easy to follow, and the daily practice keeps me motivated. If you're planning to learn a new language, give Duolingo a try. Output Requirements - Vertical (9:16) - 20–30 seconds - UGC-style AI presenter - Natural AI voice - Captions enabled
A short-form UGC-style video ad prompt for a consumer mobile app, designed to test whether a tool can explain app benefits simply and persuasively in a social ad format.
Why this input is hard
- · mobile app understanding
- · consumer app promotion
- · script quality
- · avatar realism
- · voice quality
- · caption quality
- · overall ad readiness
Output — unretouched
No output artifact
The verdict rests on the tester's written observation alone — no file was captured for this cell.
Also checked on this input — same tool, 3 other criteria
Ad-readiness◐ MixedThe export was clean and usable for professional platforms, but the workflow still needed extra editing to make the video more engaging.Product understanding⚠ StruggledThe app interface was not automatically included, so the output lacked built-in contextual visuals for the product.Script quality & persuasiveness◐ MixedThe delivery matched educational content, but it could feel slightly formal rather than highly engaging.
Provenance
- Observation
- 6492839a-845c-431c-bea3-65a4157da78a
- Evidence run
- f91a51ec-b400-46fe-97f5-7e779fe17532
- Study
- Generate UGC-Style Video Ads With AI Avatars
- Research task
- 86baxegpg
- Tested at
- not recorded
- Source
- first-party
- Evidence state
- observed
- Proof shown
- input only
- Cost / latency
- not captured
- Repeat run
- not captured
- Tester
- not captured
The last three rows are honest blanks, not placeholders — our capture has no field for them yet.
Query this
get_evidence({
tool: "veed-io"
})MCP · mcp.aidemos.com/api/mcp
Free with attribution.
Same input, same check — 4 other tools
measured on Voice quality
Creatify.ai◐ MixedThe voice is simple and clean and fits educational/app promotion content, but the delivery is described as slightly neutral rather than highly engaging.Synthesia✓ WorkedThe voice stayed clear and well-paced, supporting easy comprehension.Topview AI◐ MixedThe voice stays stable across the video, but the tone is flat and neutral rather than engaging.Vidnoz AI✓ WorkedThe voice output stays consistent throughout the ad.
This evidence is published in
From the same study (page rebuilt from a later run)
Real inputs and real outputs, no retouching · every cell queryable via API & MCP · aidemos.com