{"observation":{"id":"2a8a152a-b374-43d8-a9ce-6509de4c10ea","tool":"topmediai-voice-cloning","tool_name":"TopMediai Voice Cloning","criterion":"long-form-consistency","criterion_name":"Long-Form Consistency","criterion_definition":"Whether voice quality, pacing, and pronunciation stay consistent over longer passages instead of degrading after a few sentences.","criterion_evidence_type":"transformation","criterion_rank_role":"decisive","criterion_rank_role_reason":"For text-to-voiceover work, the voice must stay stable across longer scripts; degradation means the output is not reliable. 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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 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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":"topmediai-voice-cloning","tool_url":"https://aidemos.com/tools/topmediai-voice-cloning","permalink":"https://aidemos.com/evidence/2a8a152a-b374-43d8-a9ce-6509de4c10ea","api_url":"https://ai.aidemos.com/v1/observations/2a8a152a-b374-43d8-a9ce-6509de4c10ea"},"peers":[{"id":"921eab3c-274a-407a-b303-a4eba0dbec01","tool":"elevenlabs","tool_name":"ElevenLabs","verdict":"struggled","score":null,"score_total":null,"note":"Becomes less consistent over longer Hindi passages, with quality fluctuations becoming more noticeable than in the English runs.","artifact_count":3,"thumbnail":"https://d3epheqghktydj.cloudfront.net/research-media-elevenlabs-hindi-script-input-8cffd5de94b9.txt","evidence_url":"https://aidemos.com/evidence/921eab3c-274a-407a-b303-a4eba0dbec01"},{"id":"096671ca-2c94-4e19-9ae7-f353eba9f1b2","tool":"heygen","tool_name":"Heygen","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,"thumbnail":"https://d3epheqghktydj.cloudfront.net/research-media-heygen-output-multilingual-9b4cbddb338d.wav","evidence_url":"https://aidemos.com/evidence/096671ca-2c94-4e19-9ae7-f353eba9f1b2"},{"id":"14d0420b-6b5f-416d-830b-6162388f08c3","tool":"inworld","tool_name":"Inworld","verdict":"mixed","score":null,"score_total":null,"note":"Over the longer Hindi passage, the output stayed reasonably usable, but the report still frames it as mainly suitable for general voice generation rather than exact identity preservation.","artifact_count":2,"thumbnail":"https://d3epheqghktydj.cloudfront.net/research-media-inworld-hindi-script-input-d69c2e60241a.txt","evidence_url":"https://aidemos.com/evidence/14d0420b-6b5f-416d-830b-6162388f08c3"},{"id":"e2d376a3-c706-4b32-a63c-cd1b26e7b1a9","tool":"minimax","tool_name":"MiniMax","verdict":"mixed","score":null,"score_total":null,"note":"At the generated clip length, the Hindi output stayed structurally stable, but the report did not test any longer Hindi passage.","artifact_count":1,"thumbnail":"https://d3epheqghktydj.cloudfront.net/research-media-minimax-output-multilingual-52e4d0b98a2d.wav","evidence_url":"https://aidemos.com/evidence/e2d376a3-c706-4b32-a63c-cd1b26e7b1a9"},{"id":"44c61bd5-f555-4d5a-bc96-3dbf1aa47a2c","tool":"uberduck","tool_name":"Uberduck","verdict":"struggled","score":null,"score_total":null,"note":"The output was already too poor at the outset to judge whether quality would degrade further over length.","artifact_count":1,"thumbnail":"https://d3epheqghktydj.cloudfront.net/research-media-uberduck-multilingual-output-4d84e3518dae.wav","evidence_url":"https://aidemos.com/evidence/44c61bd5-f555-4d5a-bc96-3dbf1aa47a2c"},{"id":"c4aeccf7-e6da-4b05-8913-fc8708c68754","tool":"vocalai","tool_name":"VocalAI","verdict":"mixed","score":null,"score_total":null,"note":"Long-form consistency was acceptable but not fully reliable, with occasional quality fluctuations that made the output better suited to shorter multilingual content than extended narration.","artifact_count":1,"thumbnail":"https://d3epheqghktydj.cloudfront.net/research-media-vocalai-output-multilingual-f02d3b493f30.wav","evidence_url":"https://aidemos.com/evidence/c4aeccf7-e6da-4b05-8913-fc8708c68754"}],"other_criteria":[{"id":"c4f6b3d9-a2ad-499c-8142-bd6138f0f31e","criterion":"multilingual-output-quality","criterion_name":"Multilingual Output Quality","rank_role":"decisive","verdict":"worked","score":null,"score_total":null,"note":"Gen+ reproduces Hindi accurately even though voice similarity is lower, so multilingual generation quality remains strong.","artifact_count":2,"evidence_url":"https://aidemos.com/evidence/c4f6b3d9-a2ad-499c-8142-bd6138f0f31e"},{"id":"800ae111-66ae-4cb1-8b05-214662fb2292","criterion":"multilingual-output-quality","criterion_name":"Multilingual Output Quality","rank_role":"decisive","verdict":"worked","score":null,"score_total":null,"note":"Gen handles Hindi pronunciation and language adaptation effectively, showing strong multilingual performance.","artifact_count":3,"evidence_url":"https://aidemos.com/evidence/800ae111-66ae-4cb1-8b05-214662fb2292"},{"id":"4d966a9e-a945-465a-9eb8-7ec33933cd3b","criterion":"naturalness","criterion_name":"Naturalness & Human Quality","rank_role":"decisive","verdict":"worked","score":null,"score_total":null,"note":"HD sounds human-like in Hindi with better flow and delivery than Gen+, plus a natural conversational rhythm.","artifact_count":2,"evidence_url":"https://aidemos.com/evidence/4d966a9e-a945-465a-9eb8-7ec33933cd3b"},{"id":"db6cb618-6b9b-4e1f-9831-51032e62ed7f","criterion":"naturalness","criterion_name":"Naturalness & Human Quality","rank_role":"decisive","verdict":"worked","score":null,"score_total":null,"note":"Gen delivers natural speech flow in Hindi, with smooth pacing and pleasant, human-like delivery.","artifact_count":2,"evidence_url":"https://aidemos.com/evidence/db6cb618-6b9b-4e1f-9831-51032e62ed7f"},{"id":"98d2b6f3-b071-46c8-bbc4-796afbff21b0","criterion":"naturalness","criterion_name":"Naturalness & Human Quality","rank_role":"decisive","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,"evidence_url":"https://aidemos.com/evidence/98d2b6f3-b071-46c8-bbc4-796afbff21b0"},{"id":"fca6a899-4704-412d-8b29-b73f132a07aa","criterion":"pronunciation-accuracy","criterion_name":"Pronunciation Accuracy","rank_role":"decisive","verdict":"worked","score":null,"score_total":null,"note":"Gen+ keeps Hindi pronunciation and language reproduction accurate despite weak identity matching.","artifact_count":3,"evidence_url":"https://aidemos.com/evidence/fca6a899-4704-412d-8b29-b73f132a07aa"},{"id":"eb4e5df5-dc49-4267-a7db-d348767f0d6f","criterion":"voice-match-accuracy","criterion_name":"Voice Match Accuracy","rank_role":"decisive","verdict":"mixed","score":null,"score_total":null,"note":"In Hindi, Gen retains about 50–60% of the original speaker identity, so it sounds recognizably close but not exact.","artifact_count":3,"evidence_url":"https://aidemos.com/evidence/eb4e5df5-dc49-4267-a7db-d348767f0d6f"},{"id":"e25a1802-093c-4026-b1bd-e61efdc6de60","criterion":"voice-match-accuracy","criterion_name":"Voice Match Accuracy","rank_role":"decisive","verdict":"failed","score":null,"score_total":null,"note":"In Hindi, Gen+ preserves only about 10–20% of the original speaker identity, with most of the voice sounding significantly different from the English reference.","artifact_count":3,"evidence_url":"https://aidemos.com/evidence/e25a1802-093c-4026-b1bd-e61efdc6de60"},{"id":"e5d749b1-909d-4e87-a6b4-da6bd464217d","criterion":"voice-match-accuracy","criterion_name":"Voice Match Accuracy","rank_role":"decisive","verdict":"mixed","score":null,"score_total":null,"note":"In Hindi, HD preserves speaker identity inconsistently: some sections stay close to the original voice while others sound noticeably different.","artifact_count":3,"evidence_url":"https://aidemos.com/evidence/e5d749b1-909d-4e87-a6b4-da6bd464217d"}],"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":"921eab3c-274a-407a-b303-a4eba0dbec01","tool":"elevenlabs","tool_name":"ElevenLabs","verdict":"struggled","score":null,"score_total":null,"note":"Becomes less consistent over longer Hindi passages, with quality fluctuations becoming more noticeable than in the English runs."},{"id":"096671ca-2c94-4e19-9ae7-f353eba9f1b2","tool":"heygen","tool_name":"Heygen","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."},{"id":"14d0420b-6b5f-416d-830b-6162388f08c3","tool":"inworld","tool_name":"Inworld","verdict":"mixed","score":null,"score_total":null,"note":"Over the longer Hindi passage, the output stayed reasonably usable, but the report still frames it as mainly suitable for general voice generation rather than exact identity preservation."},{"id":"e2d376a3-c706-4b32-a63c-cd1b26e7b1a9","tool":"minimax","tool_name":"MiniMax","verdict":"mixed","score":null,"score_total":null,"note":"At the generated clip length, the Hindi output stayed structurally stable, but the report did not test any longer Hindi passage."},{"id":"44c61bd5-f555-4d5a-bc96-3dbf1aa47a2c","tool":"uberduck","tool_name":"Uberduck","verdict":"struggled","score":null,"score_total":null,"note":"The output was already too poor at the outset to judge whether quality would degrade further over length."},{"id":"c4aeccf7-e6da-4b05-8913-fc8708c68754","tool":"vocalai","tool_name":"VocalAI","verdict":"mixed","score":null,"score_total":null,"note":"Long-form consistency was acceptable but not fully reliable, with occasional quality fluctuations that made the output better suited to shorter multilingual content than extended narration."}]}