{"observation":{"id":"4e66dea4-9062-482f-b46b-ef96f5c6cfeb","tool":"heygen","tool_name":"Heygen","criterion":"naturalness","criterion_name":"Naturalness & Human Quality","criterion_definition":"How realistic and human-like the output sounds, including pacing, breathing, and micro-pauses.","criterion_evidence_type":"transformation","criterion_rank_role":"decisive","criterion_rank_role_reason":"A voiceover tool has to sound human and listenable; unnatural pacing or robotic delivery undermines the main job. (3 of 3 judges)","scenario":"multilingual-voice-sample-hindi","scenario_name":"Multilingual Voice Sample (Hindi)","group_tag":"voice-cloning","scenario_description":"A Hindi-language generation prompt applied to the already-cloned voice to test cross-language speaker preservation, pronunciation accuracy, and multilingual consistency across tools.","modality":"text","input_text":null,"input_artifact_refs":[{"alt":null,"url":"https://d3epheqghktydj.cloudfront.net/research-media-heygen-hindi-script-input-fe71b875f774.txt","role":"input","filename":"heygen_hindi_script_input.txt"},{"alt":null,"url":"https://d3epheqghktydj.cloudfront.net/research-media-topmediai-hindi-script-input-446f5191928a.txt","role":"input","filename":"topmediai_hindi_script_input.txt"},{"alt":null,"url":"https://d3epheqghktydj.cloudfront.net/clone-your-voice-and-generate-voiceover--vocalai-hindi-input-268187bdf25d.txt","role":"input","filename":"vocalai_hindi_input.txt"},{"alt":null,"url":"https://d3epheqghktydj.cloudfront.net/clone-your-voice-and-generate-voiceover--aiclonevoicefree-hindi-input-43755ffcd760.txt","role":"input","filename":"aiclonevoicefree_hindi_input.txt"},{"alt":null,"url":"https://d3epheqghktydj.cloudfront.net/clone-your-voice-and-generate-voiceover--elevenlabs-hindi-input-626ee5e1316f.txt","role":"input","filename":"elevenlabs_hindi_input.txt"},{"alt":null,"url":"https://d3epheqghktydj.cloudfront.net/clone-your-voice-and-generate-voiceover--minimax-hindi-input-3f25c2e82e07.txt","role":"input","filename":"minimax_hindi_input.txt"},{"alt":null,"url":"https://d3epheqghktydj.cloudfront.net/clone-your-voice-and-generate-voiceover--inworld-hindi-input-1d7bed5dd782.txt","role":"input","filename":"inworld_hindi_input.txt"},{"alt":null,"url":"https://d3epheqghktydj.cloudfront.net/clone-your-voice-and-generate-voiceover--fishaudio-hindi-input-3c6701eea64d.txt","role":"input","filename":"fishaudio_hindi_input.txt"},{"alt":null,"url":"https://d3epheqghktydj.cloudfront.net/research-media-uberduck-hindi-input-2eac37eaf4b8.txt","role":"input","filename":"uberduck_hindi_input.txt"}],"stresses":["Multilingual voice generation","Cross-language speaker preservation","Pronunciation accuracy in Hindi","Tone, pitch, and pacing consistency across languages","Long-form multilingual reliability"],"verdict":"struggled","score":null,"score_total":null,"note":"The Hindi output contained robotic artifacts and did not sound completely natural or smooth.","evidence_state":"verified","source":null,"artifacts":[{"url":"https://d3epheqghktydj.cloudfront.net/research-media-heygen-output-multilingual-9b4cbddb338d.wav","role":"output","alt":null}],"run_id":"46222c41-0046-41cc-bfaa-5f7ba6aa4933","study_title":"Clone Your Voice and Generate Voiceover from Text","study_kind":"generation","research_task":"86ba42bx1","tested_at":null,"completeness":"input-and-output","input":{"state":"files","text":null,"files":[{"url":"https://d3epheqghktydj.cloudfront.net/research-media-heygen-hindi-script-input-fe71b875f774.txt","filename":"heygen_hindi_script_input.txt","alt":"Multilingual Voice Sample (Hindi)","role":"input"},{"url":"https://d3epheqghktydj.cloudfront.net/research-media-topmediai-hindi-script-input-446f5191928a.txt","filename":"topmediai_hindi_script_input.txt","alt":"Multilingual Voice Sample (Hindi)","role":"input"},{"url":"https://d3epheqghktydj.cloudfront.net/clone-your-voice-and-generate-voiceover--vocalai-hindi-input-268187bdf25d.txt","filename":"vocalai_hindi_input.txt","alt":"Multilingual Voice Sample (Hindi)","role":"input"},{"url":"https://d3epheqghktydj.cloudfront.net/clone-your-voice-and-generate-voiceover--aiclonevoicefree-hindi-input-43755ffcd760.txt","filename":"aiclonevoicefree_hindi_input.txt","alt":"Multilingual Voice Sample (Hindi)","role":"input"},{"url":"https://d3epheqghktydj.cloudfront.net/clone-your-voice-and-generate-voiceover--elevenlabs-hindi-input-626ee5e1316f.txt","filename":"elevenlabs_hindi_input.txt","alt":"Multilingual Voice Sample (Hindi)","role":"input"},{"url":"https://d3epheqghktydj.cloudfront.net/clone-your-voice-and-generate-voiceover--minimax-hindi-input-3f25c2e82e07.txt","filename":"minimax_hindi_input.txt","alt":"Multilingual Voice Sample (Hindi)","role":"input"},{"url":"https://d3epheqghktydj.cloudfront.net/clone-your-voice-and-generate-voiceover--inworld-hindi-input-1d7bed5dd782.txt","filename":"inworld_hindi_input.txt","alt":"Multilingual Voice Sample (Hindi)","role":"input"},{"url":"https://d3epheqghktydj.cloudfront.net/clone-your-voice-and-generate-voiceover--fishaudio-hindi-input-3c6701eea64d.txt","filename":"fishaudio_hindi_input.txt","alt":"Multilingual Voice Sample (Hindi)","role":"input"},{"url":"https://d3epheqghktydj.cloudfront.net/research-media-uberduck-hindi-input-2eac37eaf4b8.txt","filename":"uberduck_hindi_input.txt","alt":"Multilingual Voice Sample (Hindi)","role":"input"}],"modality":"text","stresses":["Multilingual voice generation","Cross-language speaker preservation","Pronunciation accuracy in Hindi","Tone, pitch, and pacing consistency across languages","Long-form multilingual reliability"]},"tool_page_slug":"heygen","tool_url":"https://aidemos.com/tools/heygen","permalink":"https://aidemos.com/evidence/4e66dea4-9062-482f-b46b-ef96f5c6cfeb","api_url":"https://ai.aidemos.com/v1/observations/4e66dea4-9062-482f-b46b-ef96f5c6cfeb"},"peers":[{"id":"617d4257-a6ba-48bb-bda5-0ab891830d59","tool":"aiclonevoicefree-com","tool_name":"AICloneVoiceFree.com","verdict":"struggled","score":null,"score_total":null,"note":"The Hindi output sounds robotic, with weak natural speech flow and largely absent human-like qualities compared with the English cloning results.","artifact_count":1,"thumbnail":"https://d3epheqghktydj.cloudfront.net/research-media-aiclonevoicefree-output-multilingual-445effae1957.mp3","evidence_url":"https://aidemos.com/evidence/617d4257-a6ba-48bb-bda5-0ab891830d59"},{"id":"288eccd6-1e12-483d-b556-6778fe8e292b","tool":"elevenlabs","tool_name":"ElevenLabs","verdict":"worked","score":null,"score_total":null,"note":"Still sounds natural, human-like, and pleasant in Hindi even though the cloned identity is weak.","artifact_count":3,"thumbnail":"https://d3epheqghktydj.cloudfront.net/research-media-elevenlabs-hindi-script-input-8cffd5de94b9.txt","evidence_url":"https://aidemos.com/evidence/288eccd6-1e12-483d-b556-6778fe8e292b"},{"id":"a68ff8c6-0b46-41a5-9262-cadc50fa78e1","tool":"fish-audio","tool_name":"Fish Audio","verdict":"worked","score":null,"score_total":null,"note":"Sounds human in Hindi as well: pacing, pitch, and pauses came through well in both Hindi outputs, and neither was described as robotic.","artifact_count":2,"thumbnail":"https://d3epheqghktydj.cloudfront.net/research-media-multilingual-input-output-1-680f6ea7a739.mp3","evidence_url":"https://aidemos.com/evidence/a68ff8c6-0b46-41a5-9262-cadc50fa78e1"},{"id":"572fda50-1c84-4b1d-bd17-6af1d72557ed","tool":"inworld","tool_name":"Inworld","verdict":"worked","score":null,"score_total":null,"note":"The Hindi output still sounded human, with natural pauses and phrasing and no robotic quality.","artifact_count":1,"thumbnail":"https://d3epheqghktydj.cloudfront.net/research-media-inworld-output-multilingual-fc9ec68a818b.mp3","evidence_url":"https://aidemos.com/evidence/572fda50-1c84-4b1d-bd17-6af1d72557ed"},{"id":"9a8d0205-e010-486e-ad27-46bcb2cbb7ea","tool":"minimax","tool_name":"MiniMax","verdict":"worked","score":null,"score_total":null,"note":"The Hindi output still sounded human-like with natural pauses rather than robotic.","artifact_count":1,"thumbnail":"https://d3epheqghktydj.cloudfront.net/research-media-minimax-output-multilingual-52e4d0b98a2d.wav","evidence_url":"https://aidemos.com/evidence/9a8d0205-e010-486e-ad27-46bcb2cbb7ea"},{"id":"98d2b6f3-b071-46c8-bbc4-796afbff21b0","tool":"topmediai-voice-cloning","tool_name":"TopMediai Voice Cloning","verdict":"worked","score":null,"score_total":null,"note":"Gen+ sounds human-like in Hindi and remains understandable and natural, even though the flow is slightly slower than the other outputs.","artifact_count":2,"thumbnail":"https://d3epheqghktydj.cloudfront.net/research-media-topmediai-hindi-script-input-446f5191928a.txt","evidence_url":"https://aidemos.com/evidence/98d2b6f3-b071-46c8-bbc4-796afbff21b0"},{"id":"97cb175b-8fd8-4f6a-9adf-2f7b0b8d71d2","tool":"uberduck","tool_name":"Uberduck","verdict":"failed","score":null,"score_total":null,"note":"The Hindi output was robotic and disjointed, even more so than the English runs.","artifact_count":1,"thumbnail":"https://d3epheqghktydj.cloudfront.net/research-media-uberduck-multilingual-output-4d84e3518dae.wav","evidence_url":"https://aidemos.com/evidence/97cb175b-8fd8-4f6a-9adf-2f7b0b8d71d2"},{"id":"69df860a-164f-491d-a752-2cb8d9f236e5","tool":"vocalai","tool_name":"VocalAI","verdict":"struggled","score":null,"score_total":null,"note":"The Hindi output sounded more robotic than the English runs, with weaker human-like qualities and a less natural speech flow.","artifact_count":1,"thumbnail":"https://d3epheqghktydj.cloudfront.net/research-media-vocalai-output-multilingual-f02d3b493f30.wav","evidence_url":"https://aidemos.com/evidence/69df860a-164f-491d-a752-2cb8d9f236e5"}],"other_criteria":[{"id":"096671ca-2c94-4e19-9ae7-f353eba9f1b2","criterion":"long-form-consistency","criterion_name":"Long-Form Consistency","rank_role":"decisive","verdict":"struggled","score":null,"score_total":null,"note":"The multilingual output was not reliable for long passages, and the report says quality degraded during extended speech.","artifact_count":1,"evidence_url":"https://aidemos.com/evidence/096671ca-2c94-4e19-9ae7-f353eba9f1b2"},{"id":"7bc3435b-8588-41f2-b2ba-9181d4b56ed9","criterion":"multilingual-output-quality","criterion_name":"Multilingual Output Quality","rank_role":"decisive","verdict":"mixed","score":null,"score_total":null,"note":"The tool does support multilingual voice generation, but the Hindi result was not production-ready because pronunciation accuracy was the biggest limitation.","artifact_count":1,"evidence_url":"https://aidemos.com/evidence/7bc3435b-8588-41f2-b2ba-9181d4b56ed9"},{"id":"55c6d740-9144-4be8-a149-683b69185420","criterion":"pronunciation-accuracy","criterion_name":"Pronunciation Accuracy","rank_role":"decisive","verdict":"failed","score":null,"score_total":null,"note":"Hindi words were frequently mispronounced in the multilingual output.","artifact_count":2,"evidence_url":"https://aidemos.com/evidence/55c6d740-9144-4be8-a149-683b69185420"},{"id":"17a1e524-2563-42f3-9019-bfa76234548d","criterion":"voice-match-accuracy","criterion_name":"Voice Match Accuracy","rank_role":"decisive","verdict":"mixed","score":null,"score_total":null,"note":"The Hindi clone preserved some of the original speaker's vocal characteristics, but it was not a close match overall when compared against the English best-variant reference output.","artifact_count":2,"evidence_url":"https://aidemos.com/evidence/17a1e524-2563-42f3-9019-bfa76234548d"}],"appears_in":[{"page_type":"ranking","slug":"voice-cloning-tools","title":"Best AI Tools to Clone Your Voice and Generate Voiceovers from Text","url":"https://aidemos.com/best/voice-cloning-tools","binding":"run"}],"same_scenario":[{"id":"617d4257-a6ba-48bb-bda5-0ab891830d59","tool":"aiclonevoicefree-com","tool_name":"AICloneVoiceFree.com","verdict":"struggled","score":null,"score_total":null,"note":"The Hindi output sounds robotic, with weak natural speech flow and largely absent human-like qualities compared with the English cloning results."},{"id":"288eccd6-1e12-483d-b556-6778fe8e292b","tool":"elevenlabs","tool_name":"ElevenLabs","verdict":"worked","score":null,"score_total":null,"note":"Still sounds natural, human-like, and pleasant in Hindi even though the cloned identity is weak."},{"id":"a68ff8c6-0b46-41a5-9262-cadc50fa78e1","tool":"fish-audio","tool_name":"Fish Audio","verdict":"worked","score":null,"score_total":null,"note":"Sounds human in Hindi as well: pacing, pitch, and pauses came through well in both Hindi outputs, and neither was described as robotic."},{"id":"572fda50-1c84-4b1d-bd17-6af1d72557ed","tool":"inworld","tool_name":"Inworld","verdict":"worked","score":null,"score_total":null,"note":"The Hindi output still sounded human, with natural pauses and phrasing and no robotic quality."},{"id":"9a8d0205-e010-486e-ad27-46bcb2cbb7ea","tool":"minimax","tool_name":"MiniMax","verdict":"worked","score":null,"score_total":null,"note":"The Hindi output still sounded human-like with natural pauses rather than robotic."},{"id":"98d2b6f3-b071-46c8-bbc4-796afbff21b0","tool":"topmediai-voice-cloning","tool_name":"TopMediai Voice Cloning","verdict":"worked","score":null,"score_total":null,"note":"Gen+ sounds human-like in Hindi and remains understandable and natural, even though the flow is slightly slower than the other outputs."},{"id":"97cb175b-8fd8-4f6a-9adf-2f7b0b8d71d2","tool":"uberduck","tool_name":"Uberduck","verdict":"failed","score":null,"score_total":null,"note":"The Hindi output was robotic and disjointed, even more so than the English runs."},{"id":"69df860a-164f-491d-a752-2cb8d9f236e5","tool":"vocalai","tool_name":"VocalAI","verdict":"struggled","score":null,"score_total":null,"note":"The Hindi output sounded more robotic than the English runs, with weaker human-like qualities and a less natural speech flow."}]}