{"observation":{"id":"7e43c5e4-07e8-4b3b-8141-9f792f225667","tool":"heygen","tool_name":"HeyGen","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":"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.","evidence_state":"verified","source":null,"artifacts":[{"url":"https://cdn.futuresmart.ai/public/aidemos/e1595503067242cdbfafa0a9676f1a5a.mp4?v=1","role":"output","alt":null},{"url":"https://cdn.futuresmart.ai/public/aidemos/a0b2311baf1448ae92d376cb35e9dd75.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":"heygen","tool_url":"https://aidemos.com/tools/heygen","permalink":"https://aidemos.com/evidence/7e43c5e4-07e8-4b3b-8141-9f792f225667","api_url":"https://ai.aidemos.com/v1/observations/7e43c5e4-07e8-4b3b-8141-9f792f225667"},"peers":[{"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"},{"id":"f410dd67-fcba-4ee3-ac8e-1336e9dd7204","tool":"synthesia","tool_name":"Synthesia","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.","artifact_count":1,"thumbnail":"https://cdn.futuresmart.ai/public/aidemos/ea4c634e3873477ba8e836f199738bcc.mp4?v=1","evidence_url":"https://aidemos.com/evidence/f410dd67-fcba-4ee3-ac8e-1336e9dd7204"}],"other_criteria":[{"id":"9012a876-7dac-4276-89c3-aa9dc9ebcf9d","criterion":"avatar-realism","criterion_name":"Avatar realism","rank_role":"decisive","verdict":"worked","score":null,"score_total":null,"note":"The 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.","artifact_count":2,"evidence_url":"https://aidemos.com/evidence/9012a876-7dac-4276-89c3-aa9dc9ebcf9d"},{"id":"1dd03c75-de2c-4a5b-99da-30920f49b10d","criterion":"b-roll-product-integration","criterion_name":"B-roll / product integration","rank_role":"decisive","verdict":"failed","score":null,"score_total":null,"note":"The supporting footage is not product-integrated because the cutaway uses the wrong app entirely, so the B-roll does not match the Duolingo testimonial being spoken.","artifact_count":2,"evidence_url":"https://aidemos.com/evidence/1dd03c75-de2c-4a5b-99da-30920f49b10d"},{"id":"563c5021-098b-4a1f-b449-465d7e93d46c","criterion":"caption-quality","criterion_name":"Caption quality","rank_role":"decisive","verdict":"mixed","score":null,"score_total":null,"note":"Captions are present, but around 0:04-0:05 they overlap with a leftover badge graphic and become garbled, creating hard-to-read double-exposed text.","artifact_count":2,"evidence_url":"https://aidemos.com/evidence/563c5021-098b-4a1f-b449-465d7e93d46c"},{"id":"8c0a2025-1a9c-4901-bf4c-6a1dc599c348","criterion":"product-understanding","criterion_name":"Product understanding","rank_role":"decisive","verdict":"failed","score":null,"score_total":null,"note":"Product understanding breaks in the B-roll cutaway: the phone screen shows a shopping app ('NEW YORK BAG $219, ADD TO CART') instead of Duolingo or any language-learning interface.","artifact_count":2,"evidence_url":"https://aidemos.com/evidence/8c0a2025-1a9c-4901-bf4c-6a1dc599c348"},{"id":"64e1c84b-48cc-4206-a23d-413108d746c3","criterion":"script-quality-persuasiveness","criterion_name":"Script quality & persuasiveness","rank_role":"decisive","verdict":"worked","score":null,"score_total":null,"note":"The script is delivered verbatim from start to finish and lands on a natural CTA, ending correctly on 'give Duolingo a try.'","artifact_count":2,"evidence_url":"https://aidemos.com/evidence/64e1c84b-48cc-4206-a23d-413108d746c3"}],"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":"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."},{"id":"f410dd67-fcba-4ee3-ac8e-1336e9dd7204","tool":"synthesia","tool_name":"Synthesia","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."}]}