{"observation":{"id":"f410dd67-fcba-4ee3-ac8e-1336e9dd7204","tool":"synthesia","tool_name":"Synthesia","criterion":"platform-formats","criterion_name":"Platform formats","criterion_definition":"Correct aspect ratios and lengths for each channel or short-form platform.","criterion_evidence_type":"transformation","criterion_rank_role":"context","criterion_rank_role_reason":"Aspect ratios and length presets are delivery convenience; they matter, but they do not by themselves make the ad better or worse. (3 of 3 judges)","scenario":"duolingo-mobile-app","scenario_name":"Duolingo – Mobile App","group_tag":"ugc-style-video-ads","scenario_description":"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.","modality":"mixed","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":"failed","score":null,"score_total":null,"note":"The Duolingo output was generated in landscape rather than the requested vertical 9:16 short-form format.","evidence_state":"verified","source":null,"artifacts":[{"url":"https://cdn.futuresmart.ai/public/aidemos/ea4c634e3873477ba8e836f199738bcc.mp4?v=1","role":"output","alt":null}],"run_id":"9fdbb84b-4aa0-484d-8f89-5c46608019a5","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":"mixed","stresses":["Mobile app understanding","Consumer app promotion","Script quality","Avatar realism","Voice quality","Caption quality","Overall ad readiness"]},"tool_page_slug":"synthesia","tool_url":"https://aidemos.com/tools/synthesia","permalink":"https://aidemos.com/evidence/f410dd67-fcba-4ee3-ac8e-1336e9dd7204","api_url":"https://ai.aidemos.com/v1/observations/f410dd67-fcba-4ee3-ac8e-1336e9dd7204"},"peers":[{"id":"7e43c5e4-07e8-4b3b-8141-9f792f225667","tool":"heygen","tool_name":"HeyGen","verdict":"worked","score":null,"score_total":null,"note":"This is the only run that delivers the requested full-bleed vertical 9:16 frame with no letterboxing.","artifact_count":2,"thumbnail":"https://cdn.futuresmart.ai/public/aidemos/e1595503067242cdbfafa0a9676f1a5a.mp4?v=1","evidence_url":"https://aidemos.com/evidence/7e43c5e4-07e8-4b3b-8141-9f792f225667"},{"id":"f84f33f2-0eea-4a05-a0fb-4f7ed2dd4041","tool":"joggai","tool_name":"JoggAI","verdict":"mixed","score":null,"score_total":null,"note":"The export format is correct at full-bleed vertical 9:16 (1080×1920), but the clip is only 13.5 seconds long, below the requested 20–30 second range.","artifact_count":2,"thumbnail":"https://cdn.futuresmart.ai/public/aidemos/abcbc5e48bb14dc99f8490b2808cf261.mp4?v=1","evidence_url":"https://aidemos.com/evidence/f84f33f2-0eea-4a05-a0fb-4f7ed2dd4041"}],"other_criteria":[{"id":"579419d7-0f47-43cb-8d1b-1536ddea14c4","criterion":"ad-readiness","criterion_name":"Ad-readiness","rank_role":"decisive","verdict":"failed","score":null,"score_total":null,"note":"The Duolingo ad was not runnable as-is because downloading required an upgraded plan and the output stayed landscape instead of vertical.","artifact_count":2,"evidence_url":"https://aidemos.com/evidence/579419d7-0f47-43cb-8d1b-1536ddea14c4"},{"id":"a822e15b-a091-4f92-8344-d0bf07c19660","criterion":"avatar-realism","criterion_name":"Avatar realism","rank_role":"decisive","verdict":"worked","score":null,"score_total":null,"note":"The Duolingo output used a smooth, centered talking-head avatar, and the report says lip-sync accuracy was maintained.","artifact_count":1,"evidence_url":"https://aidemos.com/evidence/a822e15b-a091-4f92-8344-d0bf07c19660"},{"id":"b90aa48d-0aa8-4205-a720-db42358970da","criterion":"script-quality-persuasiveness","criterion_name":"Script quality & persuasiveness","rank_role":"decisive","verdict":"mixed","score":null,"score_total":null,"note":"The Duolingo script explained the app benefits clearly, but the report says the presentation felt less engaging for UGC ads and had limited emotional expressiveness.","artifact_count":1,"evidence_url":"https://aidemos.com/evidence/b90aa48d-0aa8-4205-a720-db42358970da"},{"id":"b2ef26b2-2972-4c88-96b0-547d48165f9f","criterion":"voice-quality","criterion_name":"Voice quality","rank_role":"decisive","verdict":"worked","score":null,"score_total":null,"note":"The Duolingo voice was reported as clear and well-paced, with no technical issues during generation.","artifact_count":1,"evidence_url":"https://aidemos.com/evidence/b2ef26b2-2972-4c88-96b0-547d48165f9f"}],"appears_in":[{"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":"run"}],"same_scenario":[{"id":"7e43c5e4-07e8-4b3b-8141-9f792f225667","tool":"heygen","tool_name":"HeyGen","verdict":"worked","score":null,"score_total":null,"note":"This is the only run that delivers the requested full-bleed vertical 9:16 frame with no letterboxing."},{"id":"f84f33f2-0eea-4a05-a0fb-4f7ed2dd4041","tool":"joggai","tool_name":"JoggAI","verdict":"mixed","score":null,"score_total":null,"note":"The export format is correct at full-bleed vertical 9:16 (1080×1920), but the clip is only 13.5 seconds long, below the requested 20–30 second range."}]}