The voice stayed consistent and understandable across the video.
What was measured
Voice quality
Natural-sounding voice that matches the avatar, with correct emphasis and a convincing real-creator feel.
decisive for this rankingtransformation
A convincing, natural voice is part of whether the ad feels like a real creator video rather than AI output. (3 of 3 judges)
What was given, what came back
Test input: Duolingo – Mobile App · mixed · group: ugc-style-video-ads
Input — what we sent
Input, verbatim
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 promo prompt for a consumer mobile app, designed to test whether the tool can explain app benefits simply and persuasively while generating a realistic AI-presenter video.
Why this input is hard
- · Mobile app understanding
- · Consumer app promotion
- · Script quality
- · Avatar realism
- · Voice quality
- · Caption quality
- · Overall ad readiness
Output — unretouched
Also checked on this input — same tool, 4 other criteria
Avatar realism◐ MixedThe avatar remains visible and moves slightly, but the report describes the presenter as more AI-like than premium tools.B-roll / product integration⚠ StruggledThe podcast-style output does not show the Duolingo app UI, so the ad lacks contextual app integration.Caption quality✓ WorkedCaptions were generated and readable.Script quality & persuasiveness◐ MixedThe app promo is clear, but the tone is flat and less engaging for a language-learning ad.
Provenance
- Observation
- 06a249c8-9fd8-43fe-925f-daff45d3329e
- Evidence run
- 9fdbb84b-4aa0-484d-8f89-5c46608019a5
- Study
- Generate UGC-Style Video Ads With AI Avatars
- Research task
- 86baxegpg
- Tested at
- not recorded
- Source
- first-party
- Evidence state
- verified
- Proof shown
- input + output shown
- 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: "topview-ai",
scenario: "ugc-style-video-ads"
})MCP · mcp.aidemos.com/api/mcp
Free with attribution.
Same input, same check — 3 other tools
measured on Voice quality
AKOOL✓ WorkedVoice output stays consistent and stable across the video.Synthesia✓ WorkedThe Duolingo voice was reported as clear and well-paced, with no technical issues during generation.Vidnoz AI✓ WorkedGenerates a stable voice performance that remains consistent across the clip and fits the educational-app style prompt.
This evidence is published in
Real inputs and real outputs, no retouching · every cell queryable via API & MCP · aidemos.com