The presenter reads as a consistent human avatar with a clean UGC look throughout the clip, with no obvious flicker or identity break reported.
What was measured
Avatar realism
Believable presenter; accurate lip-sync; how uncanny or AI-obvious the presenter looks.
decisive for this rankingtransformation
If the presenter looks fake or lip-sync is off, the ad fails at the core UGC avatar job. (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, 5 other criteria
Ad-readiness◐ MixedThe clip is branded and complete, but the generic b-roll and non-clickable end card make it less action-ready as a paid ad without another review pass.B-roll / product integration◐ MixedThe clip adds a timed phone-and-coffee cutaway, but the screen content is blurred and generic instead of product-specific, so the supporting footage does not fully reinforce the app.Caption quality◐ MixedThe captions visibly advance across the clip and support the CTA line, but the report does not separately validate timing or styling beyond the sampled frame progression.Product understanding◐ MixedThe output gets the brand right in the outro card, but the mid-script phone b-roll is generic message-bubble UI rather than an actual Duolingo lesson screen, so product specificity is only partial.Script quality & persuasiveness✓ WorkedThe script is reproduced verbatim and reaches the closing CTA line without truncation, so the testimonial structure and call-to-action remain intact.
Provenance
- Observation
- 7161f9f6-898f-46f1-907c-50a97ff79b05
- 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: "invideo-ai",
scenario: "ugc-style-video-ads"
})MCP · mcp.aidemos.com/api/mcp
Free with attribution.
Same input, same check — 7 other tools
measured on Avatar realism
AKOOL◐ MixedThe presenter is serviceable, but the avatar still looks moderately AI-generated rather than high-end realistic.DreamFace◐ MixedThe Duolingo avatar has good facial realism and natural gestures/weight shifting, but the right hand turns into a smooth mitten-like blob around 0:11.HeyGen✓ WorkedThe Duolingo output reads as a casual creator-style presenter rather than an AI-obvious stock avatar, with the report calling the setting genuinely UGC-authentic.JoggAI✓ WorkedGenerates a strong-looking photorealistic avatar with no visible artifacts; the report says the face, hair, and teeth look natural even in a wide smile.Synthesia✓ WorkedThe Duolingo output used a smooth, centered talking-head avatar, and the report says lip-sync accuracy was maintained.Topview AI◐ MixedThe avatar remains visible and moves slightly, but the report describes the presenter as more AI-like than premium tools.Vidnoz AI◐ MixedProduces a believable talking-head presenter, but the report still describes the avatar as moderately AI-generated compared with higher-end tools.
This evidence is published in
Real inputs and real outputs, no retouching · every cell queryable via API & MCP · aidemos.com