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?

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. Curator 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. Curator 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. Limitations: Cards/code read 2026-10-22; nothing run or downloaded; not legal advice. Evidence 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"
    }
  ]
}