{"observation":{"id":"0f346770-a179-4bc3-b870-28b632e326a7","tool":"akool","tool_name":"AKOOL","criterion":"avatar-realism","criterion_name":"Avatar realism","criterion_definition":"How believable the presenter looks and how uncanny or AI-obvious the avatar appears, including lip-sync plausibility.","criterion_evidence_type":"transformation","criterion_rank_role":"decisive","criterion_rank_role_reason":"This ranking is about whether the avatar convincingly plays the creator in the ad; if it looks uncanny or AI-obvious, the core product has failed. (3 of 3 judges)","scenario":"duolingo-mobile-app","scenario_name":"Duolingo – Mobile App","group_tag":null,"scenario_description":"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.","modality":"text","input_text":"Product URL: https://www.duolingo.com/\n\nExact Script\nHook: Learning a new language has never been this easy.\nScript: 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.\n\nOutput Requirements\n- Vertical (9:16)\n- 20–30 seconds\n- UGC-style AI presenter\n- Natural AI voice\n- Captions enabled","input_artifact_refs":[],"stresses":["mobile app understanding","consumer app promotion","script quality","avatar realism","voice quality","caption quality","overall ad readiness"],"verdict":"struggled","score":null,"score_total":null,"note":"The presenter still reads as AI-generated compared with higher-end tools.","evidence_state":"verified","source":null,"artifacts":[{"url":"https://d3epheqghktydj.cloudfront.net/akool-akool-duolingo-output-mp4-0587504273b1.mp4","role":"output","alt":"akool output — duolingo brief"},{"url":"https://d3epheqghktydj.cloudfront.net/akool-akool-duolingo-3df5f0dabc28.mp4","role":null,"alt":null}],"run_id":"f91a51ec-b400-46fe-97f5-7e779fe17532","study_title":"Generate UGC-Style Video Ads With AI Avatars","study_kind":"generation","research_task":"86baxegpg","tested_at":null,"completeness":"input-and-output","input":{"state":"text","text":"Product URL: https://www.duolingo.com/\n\nExact Script\nHook: Learning a new language has never been this easy.\nScript: 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.\n\nOutput Requirements\n- Vertical (9:16)\n- 20–30 seconds\n- UGC-style AI presenter\n- Natural AI voice\n- Captions enabled","files":[],"modality":"text","stresses":["mobile app understanding","consumer app promotion","script quality","avatar realism","voice quality","caption quality","overall ad readiness"]},"tool_page_slug":"akool","tool_url":"https://aidemos.com/tools/akool","permalink":"https://aidemos.com/evidence/0f346770-a179-4bc3-b870-28b632e326a7","api_url":"https://ai.aidemos.com/v1/observations/0f346770-a179-4bc3-b870-28b632e326a7"},"peers":[{"id":"35a90460-b527-402d-91f7-1b1aca55a68c","tool":"creatify-ai","tool_name":"Creatify.ai","verdict":"worked","score":null,"score_total":null,"note":"The avatar looks realistic and holds attention well enough for a mobile-app ad, with speech and lip movements aligned naturally.","artifact_count":1,"thumbnail":"https://d3epheqghktydj.cloudfront.net/creatify-ai-creatify-duolingo-output-mp4-cd57ec72e856.mp4","evidence_url":"https://aidemos.com/evidence/35a90460-b527-402d-91f7-1b1aca55a68c"},{"id":"55a451f9-31f1-4231-abb6-35e43cc6eac9","tool":"synthesia","tool_name":"Synthesia","verdict":"worked","score":null,"score_total":null,"note":"The generated presenter delivered smoothly with maintained lip-sync, so the avatar reads as technically coherent in preview.","artifact_count":1,"thumbnail":"https://d3epheqghktydj.cloudfront.net/synthesia-synthesia-duolingo-output-mp4-0d456a3e7949.mp4","evidence_url":"https://aidemos.com/evidence/55a451f9-31f1-4231-abb6-35e43cc6eac9"},{"id":"422c1995-6ddd-4b50-9336-76d3c1f3a077","tool":"topview-ai","tool_name":"Topview AI","verdict":"struggled","score":null,"score_total":null,"note":"The presenter still looks AI-like, and minor lip-sync mismatches remain visible.","artifact_count":2,"thumbnail":"https://d3epheqghktydj.cloudfront.net/topview-ai-topview-duolingo-output-mp4-7d3696bd9cad.mp4","evidence_url":"https://aidemos.com/evidence/422c1995-6ddd-4b50-9336-76d3c1f3a077"},{"id":"b391a3f3-4771-430c-96c5-6fcef7c408ef","tool":"vidnoz-ai","tool_name":"Vidnoz AI","verdict":"struggled","score":null,"score_total":null,"note":"The presenter still looks AI-generated compared with higher-end tools, so the avatar does not fully pass as a natural human creator.","artifact_count":2,"thumbnail":"https://d3epheqghktydj.cloudfront.net/vidnoz-ai-vidnoz-duolingo-output-mp4-57c355c6055f.mp4","evidence_url":"https://aidemos.com/evidence/b391a3f3-4771-430c-96c5-6fcef7c408ef"}],"other_criteria":[{"id":"866983da-4c46-4f0b-b5df-b5334e10854e","criterion":"ad-readiness","criterion_name":"Ad-readiness","rank_role":"decisive","verdict":"mixed","score":null,"score_total":null,"note":"The platform exports a complete video, but the output remains generic enough that it would likely need polishing before paid use.","artifact_count":1,"evidence_url":"https://aidemos.com/evidence/866983da-4c46-4f0b-b5df-b5334e10854e"},{"id":"53d705e0-3026-42e6-ab29-910a6d9ca3c6","criterion":"editing-refinement","criterion_name":"Editing/refinement","rank_role":"context","verdict":"worked","score":null,"score_total":null,"note":"The project can be reopened after generation and the script/avatar settings edited in place, with updated generate settings visible before rerendering.","artifact_count":3,"evidence_url":"https://aidemos.com/evidence/53d705e0-3026-42e6-ab29-910a6d9ca3c6"},{"id":"30015a6b-7a7a-4320-a9bd-acfd6c148dd3","criterion":"platform-formats","criterion_name":"Platform formats","rank_role":"context","verdict":"worked","score":null,"score_total":null,"note":"Produced a vertical 9:16 short-form video export, matching the TikTok/Instagram Reels/YouTube Shorts format the report targets.","artifact_count":1,"evidence_url":"https://aidemos.com/evidence/30015a6b-7a7a-4320-a9bd-acfd6c148dd3"},{"id":"588e53d1-ae37-4beb-8884-7a32dae7d27f","criterion":"product-understanding","criterion_name":"Product understanding","rank_role":"decisive","verdict":"struggled","score":null,"score_total":null,"note":"For app ads, the generator can omit app UI and fall back to a generic background, weakening product-specific messaging.","artifact_count":1,"evidence_url":"https://aidemos.com/evidence/588e53d1-ae37-4beb-8884-7a32dae7d27f"},{"id":"324d4202-023d-460c-9041-c5b726250eef","criterion":"script-quality-persuasiveness","criterion_name":"Script quality & persuasiveness","rank_role":"decisive","verdict":"struggled","score":null,"score_total":null,"note":"The tool can keep an educational script easy to understand, but the delivery feels slightly flat and less engaging.","artifact_count":1,"evidence_url":"https://aidemos.com/evidence/324d4202-023d-460c-9041-c5b726250eef"}],"appears_in":[{"page_type":"tool","slug":"creatify-ai","title":null,"url":"https://aidemos.com/tools/creatify-ai","binding":"run"},{"page_type":"tool","slug":"synthesia","title":null,"url":"https://aidemos.com/tools/synthesia","binding":"run"},{"page_type":"tool","slug":"topview-ai","title":null,"url":"https://aidemos.com/tools/topview-ai","binding":"run"},{"page_type":"tool","slug":"vidnoz-ai","title":null,"url":"https://aidemos.com/tools/vidnoz-ai","binding":"run"},{"page_type":"ranking","slug":"ugc-video-ad-generators","title":"Best AI Tools for Generating UGC-Style Video Ads With AI Avatars","url":"https://aidemos.com/best/ugc-video-ad-generators","binding":"study"}],"same_scenario":[{"id":"35a90460-b527-402d-91f7-1b1aca55a68c","tool":"creatify-ai","tool_name":"Creatify.ai","verdict":"worked","score":null,"score_total":null,"note":"The avatar looks realistic and holds attention well enough for a mobile-app ad, with speech and lip movements aligned naturally."},{"id":"55a451f9-31f1-4231-abb6-35e43cc6eac9","tool":"synthesia","tool_name":"Synthesia","verdict":"worked","score":null,"score_total":null,"note":"The generated presenter delivered smoothly with maintained lip-sync, so the avatar reads as technically coherent in preview."},{"id":"422c1995-6ddd-4b50-9336-76d3c1f3a077","tool":"topview-ai","tool_name":"Topview AI","verdict":"struggled","score":null,"score_total":null,"note":"The presenter still looks AI-like, and minor lip-sync mismatches remain visible."},{"id":"b391a3f3-4771-430c-96c5-6fcef7c408ef","tool":"vidnoz-ai","tool_name":"Vidnoz AI","verdict":"struggled","score":null,"score_total":null,"note":"The presenter still looks AI-generated compared with higher-end tools, so the avatar does not fully pass as a natural human creator."}]}