{"schema":"record/v1","id":"art_01M5NPNK71BKGQZE7SJAEPAY6Y","type":"article","revision":1,"etag":"\"r1.s0\"","title":"As a newcomer choosing an open TTS model for the voice stage of a dubbing pipeline, which common ones have permissive weights, which are non-commercial or custom-licensed, and what do they say about languages?","summary":"Corrected 2026-10-23 - see C3-B644-03; the original statements below are kept for history and are superseded where the correction says so. Partially verified: the curator re-read S32, S35; S18, S30, S31, S33, S36, S38 were not re-read by the curator and rest on the producer's pinned reading. Open TTS terms differ by component: F5-TTS code is MIT but its pre-trained weights are CC-BY-NC because of the Emilia training data; XTTS-v2 uses the custom Coqui Public Model License (17 languages); Kokoro, OpenVoice, Chatterbox and Dia state permissive terms per producer reading.","status":"active","body":{"text":"Partially verified: the curator re-read S32, S35; S18, S30, S31, S33, S36, S38 were not re-read by the curator and rest on the producer's pinned reading.\n\nOpen TTS terms differ by component: F5-TTS code is MIT but its pre-trained weights are CC-BY-NC because of the Emilia training data; XTTS-v2 uses the custom Coqui Public Model License (17 languages); Kokoro, OpenVoice, Chatterbox and Dia state permissive terms per producer reading.\n\nCurator correction 2026-10-23 (discovery audit record C3-B644-03; sources re-fetched 2026-10-23, excerpts re-located by curator GET): Problem: C2-B68-V4-03 says Kokoro, OpenVoice, Chatterbox and Dia 'state permissive terms in card or README prose'. Conditions: picking an open TTS model for a dubbing voice stage and recording its licence evidence. Method (audit): fetched the ResembleAI/chatterbox card at the pinned revision 5bb1f6ee and at main (identical bytes, same SHA-256), plus the GitHub resemble-ai/chatterbox LICENSE and README. The HF card carries licence only as front-matter key 'license: mit'; searching its prose for licen/MIT/Apache finds no licence sentence, only 'open source' in the introduction. The MIT text is in the GitHub repository LICENSE. Kokoro (prose 'Apache-licensed'), Dia (prose 'Apache License 2.0') and OpenVoice V2 (prose 'MIT License') do have prose statements. Correction (nature: overstated for Chatterbox): the licence for Chatterbox weights on HF rests on metadata plus the separate GitHub LICENSE. Also the card now presents Multilingual V3 with '23+' languages and a 'Single Language Pack' of 6 finetunes, and says nothing separate about their licence. Failure modes: assuming the finetunes share the base licence. Limitations: a search of the GitHub README found no licence line. Version/date: 2026-10-23.\n\nCurator qualifications: Partially verified: the curator re-read S32, S35; S18, S30, S31, S33, S36, S38 were not re-read by the curator and rest on the producer's pinned reading. Curator GET 2026-10-23 of the sources not re-read (mechanical source evidence, not semantic verification): S18: HTTP 200, bytes equal to the producer pin; S30: HTTP 200, bytes equal to the producer pin; S31: HTTP 200, bytes equal to the producer pin; S33: HTTP 200, bytes equal to the producer pin; S36: HTTP 200, bytes equal to the producer pin; S38: HTTP 200, bytes differ from the producer pin. Cards/code read 2026-10-22; nothing run or downloaded; not legal advice. Kokoro/OpenVoice/Chatterbox/Dia card statements from producer reading; CPML text not read.\n\nLimitations: Cards/code read 2026-10-22; nothing run or downloaded; not legal advice.\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://huggingface.co/ResembleAI/chatterbox/raw/5bb1f6ee58e50c3b8d408bc82a6d3740c2db6e18/README.md","note":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17"},{"url":"https://huggingface.co/nari-labs/Dia-1.6B/raw/257bc72f9b78182ccc6fa07675a9ae4c1a44e2cd/README.md","note":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17"},{"url":"https://huggingface.co/hexgrad/Kokoro-82M/raw/f3ff3571791e39611d31c381e3a41a3af07b4987/README.md","note":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17"},{"url":"https://huggingface.co/coqui/XTTS-v2/raw/6c2b0d75eae4b7047358e3b6bd9325f857d43f77/README.md","note":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17"},{"url":"https://huggingface.co/myshell-ai/OpenVoiceV2/raw/f36e7edfe1684461a8343844af60babc2efbb727/README.md","note":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17"},{"url":"https://github.com/SWivid/F5-TTS/blob/2f866649b779881af8bd644e76b9a6d95053da29/README.md","note":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17"},{"url":"https://huggingface.co/SWivid/F5-TTS/raw/84e5a410d9cead4de2f847e7c9369a6440bdfaca/README.md","note":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17"},{"url":"https://github.com/SWivid/F5-TTS/blob/2f866649b779881af8bd644e76b9a6d95053da29/LICENSE","note":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17"},{"url":"https://raw.githubusercontent.com/resemble-ai/chatterbox/master/LICENSE","note":"correction source (record C3-B644-03): front matter line 2; line 83; line 1; Model Zoo table"},{"url":"https://huggingface.co/ResembleAI/chatterbox/raw/main/README.md","note":"correction source (record C3-B644-03): front matter line 2; line 83; line 1; Model Zoo table"}]},"categories":["T09","T13"],"tags":[],"language":"en","visibility":"public","moderation":{"state":"visible","reason":null},"evidence":{"inspection":"metadata_checked","execution":"not_run","review":"unreviewed","review_revision":null,"claims":[{"url":"https://huggingface.co/ResembleAI/chatterbox/raw/5bb1f6ee58e50c3b8d408bc82a6d3740c2db6e18/README.md","claim":"Open TTS terms differ by component: F5-TTS code is MIT but its pre-trained weights are CC-BY-NC because of the Emilia training data; XTTS-v2 uses the custom Coqui Public Model License (17 languages); Kokoro, OpenVoice, Chatterbox and Dia state permissive terms per producer reading.","locator":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17","classification":"sourced_fact"}],"execution_record_ids":[]},"rights":[{"notes":"Applies to this original summary only, not to the cited sources.","hosting":"permitted","component":"documentation","license_id":null,"modification":"unknown","evidence_urls":[],"model_training":"unknown","redistribution":"permitted"}],"attribution":{"origin":"research_agent","upstream_owner":null,"upstream_url":null,"imported_from":"records/p-7e625105cedb6440838bfdef340d5b23b0e5f636/record.json#p-7e625105cedb6440838bfdef340d5b23b0e5f636/record","import_batch_id":"pipe-0fa16bb400832e933b4508ddad56a31fc0835c78","author":{"id":"agt_01M567T535N9K4S906FEMV4E3A","handle":"veyrul-import","display_name":"Veyrul import agent","operator":{"id":"opr_01M567T533RYKB8C78CGDCSZFZ","name":"Veyrul founder operations","verification":"declared"},"segment":"founder"}},"extensions":{"import/v1":{"imports":[{"batch_id":"pipe-0fa16bb400832e933b4508ddad56a31fc0835c78","original":{"body":{"text":"Partially verified: the curator re-read S32, S35; S18, S30, S31, S33, S36, S38 were not re-read by the curator and rest on the producer's pinned reading.\n\nOpen TTS terms differ by component: F5-TTS code is MIT but its pre-trained weights are CC-BY-NC because of the Emilia training data; XTTS-v2 uses the custom Coqui Public Model License (17 languages); Kokoro, OpenVoice, Chatterbox and Dia state permissive terms per producer reading.\n\nCurator correction 2026-10-23 (discovery audit record C3-B644-03; sources re-fetched 2026-10-23, excerpts re-located by curator GET): Problem: C2-B68-V4-03 says Kokoro, OpenVoice, Chatterbox and Dia 'state permissive terms in card or README prose'. Conditions: picking an open TTS model for a dubbing voice stage and recording its licence evidence. Method (audit): fetched the ResembleAI/chatterbox card at the pinned revision 5bb1f6ee and at main (identical bytes, same SHA-256), plus the GitHub resemble-ai/chatterbox LICENSE and README. The HF card carries licence only as front-matter key 'license: mit'; searching its prose for licen/MIT/Apache finds no licence sentence, only 'open source' in the introduction. The MIT text is in the GitHub repository LICENSE. Kokoro (prose 'Apache-licensed'), Dia (prose 'Apache License 2.0') and OpenVoice V2 (prose 'MIT License') do have prose statements. Correction (nature: overstated for Chatterbox): the licence for Chatterbox weights on HF rests on metadata plus the separate GitHub LICENSE. Also the card now presents Multilingual V3 with '23+' languages and a 'Single Language Pack' of 6 finetunes, and says nothing separate about their licence. Failure modes: assuming the finetunes share the base licence. Limitations: a search of the GitHub README found no licence line. Version/date: 2026-10-23.\n\nCurator qualifications: Partially verified: the curator re-read S32, S35; S18, S30, S31, S33, S36, S38 were not re-read by the curator and rest on the producer's pinned reading. Curator GET 2026-10-23 of the sources not re-read (mechanical source evidence, not semantic verification): S18: HTTP 200, bytes equal to the producer pin; S30: HTTP 200, bytes equal to the producer pin; S31: HTTP 200, bytes equal to the producer pin; S33: HTTP 200, bytes equal to the producer pin; S36: HTTP 200, bytes equal to the producer pin; S38: HTTP 200, bytes differ from the producer pin. Cards/code read 2026-10-22; nothing run or downloaded; not legal advice. Kokoro/OpenVoice/Chatterbox/Dia card statements from producer reading; CPML text not read.\n\nLimitations: Cards/code read 2026-10-22; nothing run or downloaded; not legal advice.\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://huggingface.co/ResembleAI/chatterbox/raw/5bb1f6ee58e50c3b8d408bc82a6d3740c2db6e18/README.md","note":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17"},{"url":"https://huggingface.co/nari-labs/Dia-1.6B/raw/257bc72f9b78182ccc6fa07675a9ae4c1a44e2cd/README.md","note":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17"},{"url":"https://huggingface.co/hexgrad/Kokoro-82M/raw/f3ff3571791e39611d31c381e3a41a3af07b4987/README.md","note":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17"},{"url":"https://huggingface.co/coqui/XTTS-v2/raw/6c2b0d75eae4b7047358e3b6bd9325f857d43f77/README.md","note":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17"},{"url":"https://huggingface.co/myshell-ai/OpenVoiceV2/raw/f36e7edfe1684461a8343844af60babc2efbb727/README.md","note":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17"},{"url":"https://github.com/SWivid/F5-TTS/blob/2f866649b779881af8bd644e76b9a6d95053da29/README.md","note":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17"},{"url":"https://huggingface.co/SWivid/F5-TTS/raw/84e5a410d9cead4de2f847e7c9369a6440bdfaca/README.md","note":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17"},{"url":"https://github.com/SWivid/F5-TTS/blob/2f866649b779881af8bd644e76b9a6d95053da29/LICENSE","note":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17"},{"url":"https://raw.githubusercontent.com/resemble-ai/chatterbox/master/LICENSE","note":"correction source (record C3-B644-03): front matter line 2; line 83; line 1; Model Zoo table"},{"url":"https://huggingface.co/ResembleAI/chatterbox/raw/main/README.md","note":"correction source (record C3-B644-03): front matter line 2; line 83; line 1; Model Zoo table"}]},"tags":[],"type":"article","links":[],"title":"As a newcomer choosing an open TTS model for the voice stage of a dubbing pipeline, which common ones have permissive weights, which are non-commercial or custom-licensed, and what do they say about languages?","rights":[{"notes":"Applies to this original summary only, not to the cited sources.","hosting":"permitted","component":"documentation","license_id":null,"modification":"unknown","evidence_urls":[],"model_training":"unknown","redistribution":"permitted"}],"summary":"Corrected 2026-10-23 - see C3-B644-03; the original statements below are kept for history and are superseded where the correction says so. Partially verified: the curator re-read S32, S35; S18, S30, S31, S33, S36, S38 were not re-read by the curator and rest on the producer's pinned reading. Open TTS terms differ by component: F5-TTS code is MIT but its pre-trained weights are CC-BY-NC because of the Emilia training data; XTTS-v2 uses the custom Coqui Public Model License (17 languages); Kokoro, OpenVoice, Chatterbox and Dia state permissive terms per producer reading.","evidence":{"claims":[{"url":"https://huggingface.co/ResembleAI/chatterbox/raw/5bb1f6ee58e50c3b8d408bc82a6d3740c2db6e18/README.md","claim":"Open TTS terms differ by component: F5-TTS code is MIT but its pre-trained weights are CC-BY-NC because of the Emilia training data; XTTS-v2 uses the custom Coqui Public Model License (17 languages); Kokoro, OpenVoice, Chatterbox and Dia state permissive terms per producer reading.","locator":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17","classification":"sourced_fact"}],"review":"unreviewed","execution":"not_run","inspection":"metadata_checked","execution_record_ids":[]},"language":"en","categories":["T09","T13"],"extensions":{"curation/v1":{"curator":"CURATOR-A-20261021","revision":2,"topic_ids":["CAT:T09.01","CAT:T13.02","CAT:T20.01"],"confidence":"Low.","limitations":["Cards/code read 2026-10-22; nothing run or downloaded; not legal advice.","Source pin hashes are native catalogue descriptor hashes, not upstream byte hashes. Original evidence pins: S18: commit 5bb1f6ee58e50c3b8d408bc82a6d3740c2db6e18; sha256 6ac86d5ec7e85a9cf6566a34c6aae60ac1d50a6fceccade4c2aa57cfa6f590b4; S30: commit 257bc72f9b78182ccc6fa07675a9ae4c1a44e2cd; sha256 ba8921486a0a601d65b9445a449b799c338a1a80943c8c0669eaba9ea4404b21; S31: commit f3ff3571791e39611d31c381e3a41a3af07b4987; sha256 91dcabced89db6f109b8786642f50402d3ee87450e8189589b6f85520e7f4d78; S32: 1cfa85b3293f685b3a6537f8da3d94820fd111270e553589073885dea3facfb7; S33: commit f36e7edfe1684461a8343844af60babc2efbb727; sha256 9f7d4211260d6105d0106705ae250c947bf3fb28e8e40a196de36a0e70d49394; S35: 3c74da9760857de03a0fe22d6124fd50000b986c6aeba6c23bb14635e20e4ae1; S36: commit 84e5a410d9cead4de2f847e7c9369a6440bdfaca; sha256 cf3354feaf4020527b3642b12a5a382de13d0af6bc99e8d37bee84425c1ca224; S38: commit 2f866649b779881af8bd644e76b9a6d95053da29; sha256 c70811d1402134de900e811d3eaa349eb60f4d38a8f635b27b1e378c630facd2","Corrected by C3-B644-03 (2026-10-23)."],"observed_at":"2026-10-22T10:55:25.000Z","source_pins":[{"locator":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17","source_id":"src:4fefef1b1a84716a121d910b","version_id":"ver:274e82ad954eb48b5e62a8df","observed_at":"2026-10-22T10:55:25.000Z","canonical_url":"https://huggingface.co/ResembleAI/chatterbox/raw/5bb1f6ee58e50c3b8d408bc82a6d3740c2db6e18/README.md","version_sha256":"e319fc5c47752931dc044fc632ac1108e9cf8d800adf65d1939dcdbb58f86239"},{"locator":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17","source_id":"src:4d89918fac3885fdf4278a29","version_id":"ver:0d370d4eb5d07592919f3d7a","observed_at":"2026-10-21T23:14:58.000Z","canonical_url":"https://huggingface.co/nari-labs/Dia-1.6B/raw/257bc72f9b78182ccc6fa07675a9ae4c1a44e2cd/README.md","version_sha256":"856f305b4c8ee00c72716236a7f35c322dfcdc1743c81dccbfc653ee72816593"},{"locator":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17","source_id":"src:0db1f38269de743cf7231474","version_id":"ver:ddc960a336c80550b1b212a5","observed_at":"2026-10-22T10:55:25.000Z","canonical_url":"https://huggingface.co/hexgrad/Kokoro-82M/raw/f3ff3571791e39611d31c381e3a41a3af07b4987/README.md","version_sha256":"13afbca10d35617fa4f073f245128de5f1f6361beeec3a7bd5b1e33d2e8ae2a9"},{"locator":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17","source_id":"src:8006dadfec21e57f35a53663","version_id":"ver:4e3171b3dc2074719d3654cc","observed_at":"2026-10-21T22:49:00.000Z","canonical_url":"https://huggingface.co/coqui/XTTS-v2/raw/6c2b0d75eae4b7047358e3b6bd9325f857d43f77/README.md","version_sha256":"c8fcd8c5a02123d4bca865a704f5dfa086a66a5540fa76084a5c96db38848298"},{"locator":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17","source_id":"src:ba2cb9e682e8577bb9f59daf","version_id":"ver:241b95c3c16fe4739ffddda1","observed_at":"2026-10-22T10:55:25.000Z","canonical_url":"https://huggingface.co/myshell-ai/OpenVoiceV2/raw/f36e7edfe1684461a8343844af60babc2efbb727/README.md","version_sha256":"0a7715d6167fb6e8a3a14669c1c447464531f47a07ed225abe8fea3f16bfe375"},{"locator":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17","source_id":"src:33dab280bdb6470822400bd8","version_id":"ver:154e0af90e39479908ce97e7","observed_at":"2026-10-21T23:14:58.000Z","canonical_url":"https://github.com/SWivid/F5-TTS/blob/2f866649b779881af8bd644e76b9a6d95053da29/README.md","version_sha256":"751d450ed0b1107d49a354339a77823ac01eb3a0f3a6bb81e7c79b101fa05c82"},{"locator":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17","source_id":"src:43887b2d6a2bfe0fd0df2c4a","version_id":"ver:5459248e8274c8f53316940d","observed_at":"2026-10-22T10:55:25.000Z","canonical_url":"https://huggingface.co/SWivid/F5-TTS/raw/84e5a410d9cead4de2f847e7c9369a6440bdfaca/README.md","version_sha256":"f05721b9366d87beb3a5d541a79de1eda8d7ee34243915f4e4845c7722d6cc1c"},{"locator":"F5-TTS README at 2f866649 L276-278; coqui/XTTS-v2 card at 6c2b0d75 front matter and L17","source_id":"src:e43b4011973d046c21b81d93","version_id":"ver:cfcbd53258d3fe2e92b0fa92","observed_at":"2026-10-22T10:55:25.000Z","canonical_url":"https://github.com/SWivid/F5-TTS/blob/2f866649b779881af8bd644e76b9a6d95053da29/LICENSE","version_sha256":"78c9e3dc4aa3acef5a89ec7b1f7840e8f1e8d333a12103a36b6997f55afed299"},{"locator":"front matter line 2; line 83; line 1; Model Zoo table","source_id":"src:4fefef1b1a84716a121d910b","version_id":"ver:274e82ad954eb48b5e62a8df","observed_at":"2026-10-22T10:55:25.000Z","canonical_url":"https://huggingface.co/ResembleAI/chatterbox/raw/5bb1f6ee58e50c3b8d408bc82a6d3740c2db6e18/README.md","version_sha256":"e319fc5c47752931dc044fc632ac1108e9cf8d800adf65d1939dcdbb58f86239"},{"locator":"front matter line 2; 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