voice_audio_multi/docs/model_licenses.md
Fabio c36510c21e
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Initial import: audio.cpp with Orange Pi documentation
2026-11-04 19:05:22 +01:00

34 KiB

Model Licenses

audio.cpp is licensed under Apache-2.0. That license does not cover the model weights it loads: each model keeps the license of its original release, and a GGUF conversion keeps the license of the model it was converted from.

This page lists, per model family, where the original weights are published, their license, and whether that license allows commercial use. The license text at the source is what counts. This page is a summary to help you find it, not legal advice.

Licenses change. If a row is wrong or out of date, please open a PR.

Commercial use

Value Meaning
Yes The license allows commercial use. Attribution, notice, share-alike or use-policy terms may apply.
Conditional Commercial use is allowed only under a condition, such as a revenue or user limit, a territory, registration, or a notice in the product. Notes names the condition.
No Research or non-commercial use only.
Unclear The sources conflict, or no license is stated. Notes says why.

Families

Family Original weights License Commercial use Notes Checked
ace_step ACE-Step/Ace-Step1.5 MIT Yes 2026-09-21
apollo JusperLee/Apollo CC-BY-SA-4.0 Yes 2026-09-21
ast_audioset MIT/ast-finetuned-audioset-10-10-0.4593 BSD-3-Clause Yes 2026-09-26
audio8_asr Edge0/Audio8-ASR-0.1B CC-BY-NC-4.0 No 2026-09-21
audio8_tts Edge0/Audio8-TTS-Preview-0.6b Apache-2.0 Yes 2026-09-21
audio_flamingo nvidia/audio-flamingo-3-hf, nvidia/audio-flamingo-next-hf, nvidia/music-flamingo-2601-hf NVIDIA OneWay Noncommercial No Upstream model-card licenses and terms apply. SpotSound adapter is MIT; base-model terms still apply. 2026-10-26
audiosr haoheliu/audiosr_basic Apache-2.0 Yes 2026-09-21
auk tencent/AuK
tencent/AuK-Flash
MIT Yes 2026-09-21
breeze_tts BreezeBlue/Breeze-TTS-2 BreezeBlue Research and Non-Commercial License No 2026-09-21
bs_roformer Not linked Apache-2.0, as listed in the audio.cpp GGUF repo Unclear The source of the ep368 checkpoint is not documented. 2026-09-21
builtin_audio_utils xiph/rnnoise
Rikorose/DeepFilterNet
BSD-3-Clause (RNNoise); MIT or Apache-2.0 (DeepFilterNet) Yes Weights are downloaded separately. 2026-09-21
canary_asr nvidia/canary-180m-flash CC-BY-4.0 Yes 2026-09-21
ced mispeech/ced-tiny, ced-mini, ced-small, ced-base Apache-2.0 Yes Checkpoint license; the separate upstream training repository is GPL-3.0. 2026-10-09
chatterbox ResembleAI/chatterbox MIT Yes 2026-09-21
chatterbox_turbo ResembleAI/chatterbox-turbo MIT Yes 2026-09-21
citrinet_asr nvidia/stt_en_citrinet_256_ls CC-BY-4.0 Yes 2026-09-21
cohere_asr CohereLabs/cohere-transcribe-03-2026 Apache-2.0 Yes 2026-09-21
confucius4_r2t2 netease-youdao/Confucius4-R2T2 NetEase Youdao Model License Conditional A separate license is needed above RMB 1 billion yearly revenue or 100 million monthly users. The model and its outputs may not be used to improve other commercial AI models. 2026-09-21
confucius4_tts netease-youdao/Confucius4-TTS Apache-2.0 Yes 2026-09-21
controlfoley YJX-Xiaomi/ControlFoley CC-BY-NC-4.0 No 2026-09-21
cosyvoice3 FunAudioLLM/Fun-CosyVoice3-0.5B-2512 Apache-2.0 Yes 2026-09-21
crisperwhisper nyralabs/CrisperWhisper2.0_large nyra health Non-Commercial Research License No The upstream license also restricts generated outputs; inference software is MIT. 2026-09-29
dots_tts dots-studio/dots.tts-soar
dots-studio/dots.tts-mf
dots-studio/dots.tts.edit
Apache-2.0 Yes The dots.tts.edit card defers to the dots.tts project, which is Apache-2.0. 2026-09-21
dramabox ResembleAI/Dramabox LTX-2 Community License Conditional A paid license is needed from USD 10M yearly revenue. Generated content must be disclosed as machine-generated. Not for products that compete with Lightricks'. The Gemma 3 text encoder falls under the Gemma Terms of Use. 2026-09-21
earshot_vad pykeio/earshot MIT OR Apache-2.0 Yes Bundled in assets/framework/models; converted from the 1.2.2 crate. 2026-10-26
echo_tts jordand/echo-tts-base
jordand/fish-s1-dac-min
CC-BY-NC-SA-4.0 No 2026-09-21
f5_tts SWivid/F5-TTS
SWivid/Habibi-TTS
CC-BY-NC-4.0 (F5-TTS); CC-BY-NC-SA-4.0 (Habibi-TTS) No 2026-09-21
firered_audio FireRedTeam/FireRedAudio Apache-2.0 Yes 2026-09-21
firered_vad FireRedTeam/FireRedVAD Apache-2.0 Yes VAD and Stream-VAD checkpoints. 2026-10-07
fireredtts3 FireRedTeam/FireRedTTS3 Apache-2.0 Yes 2026-09-21
fish_audio fishaudio/s2-pro Fish Audio Research License No Commercial use needs a separate license from Fish Audio. 2026-09-21
fish_drama3 fishaudio/drama-3 Fish Audio Community License v1.0 Conditional Community commercial use has a revenue threshold; hosted services and other uses may require a separate license. See the source terms. 2026-10-14
fun_asr_nano FunAudioLLM/Fun-ASR-Nano-2512 Apache-2.0 Yes 2026-09-21
gigaam_asr ai-sage/GigaAM-v3, ai-sage/GigaAM-Multilingual MIT Yes 2026-09-25
glm_tts zai-org/GLM-TTS MIT Yes 2026-09-21
gradium_phonon gradium/phonon-31m-en
gradium/phonon-31m-en-audiocpp
Apache-2.0 Yes Both packages come from Gradium's repositories: the Q8_0 GGUF and the published safetensors checkpoint, each with its default voice. The 40m checkpoints (gradium/phonon-40m-en and other languages) are CC-BY-NC-4.0 and gated, and are not packaged. 2026-10-21
granite5asr ibm-granite/granite-speech-5.0-470m-turboctc Apache-2.0 Yes 2026-09-21
haas_asr third-intelligence/Haas-ja-v1.0 Apache-2.0 Yes Japanese ASR variant with a Kimi Delta Attention predictor. Upstream states that both code and model weights are Apache-2.0. 2026-11-03
heartmula HeartMuLa/HeartMuLa-oss-3B
HeartMuLa/HeartCodec-oss-20260123
Apache-2.0 Yes 2026-09-21
higgs_audio_stt bosonai/higgs-audio-v3-stt Apache-2.0 Yes 2026-09-21
higgs_audio_tts bosonai/higgs-tts-3-4b Boson Higgs TTS 3 Research and Non-Commercial License No 2026-09-21
htdemucs facebookresearch/demucs MIT Yes 2026-09-21
htdemucs_6stems facebookresearch/demucs 5c90dfd2 MIT Yes 2026-09-26
hviske_asr syvai/hviske-v5.3 CC-BY-NC-4.0 No 2026-09-21
hviske_asr_v6 syvai/hviske-v6 CC-BY-NC-4.0 No Retain upstream NOTICE and third-party license notices. 2026-10-07
index_echo IndexTeam/Index-Echo-S2TT-2B
IndexTeam/Index-Echo-S2TT-9B
Apache-2.0 Yes S2TT checkpoints only. 2026-10-01
index_tts2 IndexTeam/IndexTTS-2
IndexTeam/IndexTTS-2.5
bilibili Model Use License Conditional A separate license is needed above RMB 1 billion yearly revenue or 100 million monthly users. The model and its outputs may not be used to improve other commercial AI models. 2026-09-21
inflect_v2 owensong/Inflect-Micro-v2
owensong/Inflect-Nano-v2
Apache-2.0 Yes 2026-09-21
irodori_tts Aratako/Irodori-TTS-500M-v3
Aratako/Irodori-TTS-600M-v3-VoiceDesign
Aratako/Irodori-TTS-v4.1-Small
MIT Yes 2026-09-21
kitten_tts KittenML/kitten-tts-mini-0.8 Apache-2.0 Yes 2026-09-21
kitten_tts2 KittenML/kitten-tts-2 Stellon Labs Community License Conditional Commercial registration and revenue/funding limits; distribution and product attribution requirements apply. Decoder components retain their upstream terms. 2026-10-02
kokoro_tts hexgrad/Kokoro-82M Apache-2.0 Yes 2026-09-21
kroko_asr Banafo/Kroko-ASR CC-BY-SA Yes Stated in the model card text only: the LICENSE file is empty and no version is named. Applies to the community models; Kroko's commercial models are licensed separately. 2026-09-21
kugelaudio kugelaudio/kugelaudio-0-open MIT Yes Includes the upstream preset voice features. 2026-09-28
lfm2_audio LiquidAI/LFM2.5-Audio-1.5B
LiquidAI/LFM2.5-Audio-1.5B-JP
LFM Open License v1.0 Conditional Commercial use is licensed only to organizations with less than USD 10M yearly revenue. The audio encoder is based on canary-180m-flash (CC-BY-4.0). 2026-09-25
lfm3_audio LiquidAI/LFM3-Audio-2B
LiquidAI/LFM3-Audio-2B-GGUF
LFM Open License v1.0 Conditional Commercial use is licensed only to organizations with less than USD 10M yearly revenue. 2026-10-27
latentsync ByteDance/LatentSync-1.6
InsightFace buffalo_l
Apache-2.0 (LatentSync); non-commercial research (InsightFace weights) No Combined package includes face detection and landmark weights with separate restrictions. 2026-09-30
liveavatar Quark-Vision/Live-Avatar
Wan-AI/Wan2.2-S2V-14B
Apache-2.0 Yes 2026-09-21
magenta_realtime_2 google/magenta-realtime-2 CC-BY-4.0 Yes Retain attribution and the upstream usage terms. 2026-10-27
magpie_tts nvidia/magpie_tts_multilingual_357m NVIDIA Open Model License Yes 2026-09-21
marblenet_vad Not linked Not stated Unclear Bundled in assets/framework/models; the checkpoint's source is not documented. 2026-09-21
maya1 maya-research/maya1
hubertsiuzdak/snac_24khz
Apache-2.0 (Maya1); MIT (SNAC) Yes The combined GGUF contains weights from both projects. 2026-09-25
meanvc2 ASLP-lab/MeanVC2 Apache-2.0 Yes 2026-09-21
mel_band_roformer mlx-community/mel-roformer-mlx MIT Yes 2026-09-21
micro_wake_word ESPHome Okay Nabu Apache-2.0 Yes Default checkpoint. Upstream license scope explicitly includes model weights and manifests; retain LICENSE and NOTICE. Other user-supplied models may have different terms. 2026-10-14
midashenglm_gen mispeech/midashenglm-gen Apache-2.0 Yes 2026-09-21
minimax_h3 MiniMaxAI/MiniMax-H3 MiniMax H3 Community License Conditional Grants no rights in the EU, the UK, South Korea or the USA. Elsewhere, written authorization is needed above USD 20M yearly revenue, and "MiniMax H3" must be shown in the product's user interface. 2026-09-21
minimax_music3 MiniMaxAI/MiniMax-Music3 MiniMax-Music3 Community License Conditional "MiniMax-Music3" must be shown in the product's user interface. Written authorization is needed above USD 20M yearly revenue. Content published in public must be disclosed as machine-generated. 2026-09-21
miocodec Aratako/MioCodec-25Hz-44.1kHz-v2 MIT Yes 2026-09-21
ming3_audio inclusionAI/Ming-3.0-audio-tiny MIT Yes Includes the Thinker, Talker, audio VAE, and CAMPPlus speaker encoder. Retain the upstream MIT notice. 2026-10-21
ming3_tts inclusionAI/Ming-3.0-tts-0.5B MIT Yes Retain the inclusionAI MIT notice; the official package includes its audio VAE and CAMPPlus speaker encoder. 2026-10-20
miotts Aratako/MioTTS-1.7B Apache-2.0 Yes 2026-09-21
mira_tts YatharthS/MiraTTS CC-BY-NC-SA-4.0 No 2026-09-21
mms_forced_aligner MahmoudAshraf/mms-300m-1130-forced-aligner CC-BY-NC-4.0 No 2026-09-21
moonshine_asr moonshine-ai/moonshine-streaming-tiny
moonshine-ai/moonshine-streaming-small
moonshine-ai/moonshine-streaming-medium
MIT Yes 2026-09-21
moss_transcribe_diarize OpenMOSS-Team/MOSS-Transcribe-Diarize Apache-2.0 Yes 2026-09-21
moss_tts_local OpenMOSS-Team/MOSS-TTS-Local-Transformer-v1.5 Apache-2.0 Yes 2026-09-21
moss_tts_nano OpenMOSS-Team/MOSS-TTS-Nano-100M Apache-2.0 Yes 2026-09-21
moss_tts_v15 OpenMOSS-Team/MOSS-TTS-v1.5 Apache-2.0 Yes 2026-09-22
moss_ttsd OpenMOSS-Team/MOSS-TTSD-v1.0 Apache-2.0 Yes License declared on the official model card; bundled MOSS-Audio-Tokenizer is also Apache-2.0. 2026-10-13
moss_voicegen OpenMOSS-Team/MOSS-VoiceGenerator Apache-2.0 Yes 2026-09-21
mossformer2 alibabasglab/MossFormer2_SS_16K Apache-2.0 Yes Two-speaker separation checkpoint from ClearerVoice-Studio. 2026-10-04
muscriptor MuScriptor/muscriptor-small CC-BY-NC-4.0 No 2026-09-21
nemotron_3_diar nvidia/Nemotron-3-Diarization OpenMDW-1.1 Yes 2026-09-24
nemotron_asr nvidia/nemotron-3.5-asr-streaming-0.6b OpenMDW-1.1 Yes 2026-09-21
nemotron_transcribe nvidia/NVIDIA-Nemotron-3.5-Transcribe-30B-A4B OpenMDW-1.1 Yes Preserve the checkpoint and component notices in converted packages. 2026-10-29
neutts neuphonic/neutts-2e NeuTTS Open License v1.0 Conditional Commercial use is licensed only while yearly revenue stays under USD 5M. 2026-09-21
niagara_asr abr-ai/niagara-19m-batch.en
abr-ai/niagara-38m-batch.en
Applied Brain Research Open License v1.1 Conditional Any use while yearly gross revenue, including affiliates, stays under USD 1M; above that, non-commercial research only. 2026-09-21
omnivoice k2-fsa/OmniVoice
mohammedaly22/VoiceTut-TTS
CC-BY-NC No Changed from Apache-2.0 on 2026-07-03, "due to constraints from its training data (e.g., Emilia)". The code is Apache-2.0. The audio tokenizer, bosonai/higgs-audio-v2-tokenizer, is under the Boson Higgs Audio 2 Community License. VoiceTut-TTS is a fine-tune of OmniVoice that its model card declares as Apache-2.0; it reuses the OmniVoice audio tokenizer unchanged. 2026-10-04
open_wake_word OpenWakeWord Alexa v0.1 CC-BY-NC-SA-4.0 No Upstream pretrained-model license; the Apache-2.0 code license does not cover these weights. 2026-10-17
outetts OuteAI/Llama-OuteTTS-1.0-1B CC-BY-NC-SA-4.0 No 2026-09-21
owsm espnet/owsm_v4_base_102M
espnet/owsm_v4_small_370M
espnet/owsm_v4_medium_1B
CC-BY-4.0 Yes Attribution required. 2026-10-02
owsm_ctc espnet/owsm_ctc_v4_1B CC-BY-4.0 Yes Attribution required. 2026-10-02
parakeet_tdt nvidia/parakeet-tdt-0.6b-v3 CC-BY-4.0 Yes 2026-09-21
parakeet_tdt oruk/orukeet CC-BY-SA-4.0 Yes The Orukeet r3 weight variant. 2026-09-21
phonon2_asr FermionResearch/Phonon-2 CC-BY-4.0 Yes English-only weight variant; retain upstream NOTICE and attribution when converting/distributing. 2026-10-09
personaplex nvidia/personaplex-7b-v1 NVIDIA Open Model License Yes 2026-09-21
piper_tts rhasspy/piper-voices (en_US-lessac-medium) MIT Unclear The voice's model card points to the Lessac Blizzard 2013 dataset license, which allows non-commercial use only. 2026-09-21
plapre syvai/plapre-3 CC-BY-4.0 Yes Includes Kanade (MIT), WavLM and CosyVoice2 HiFT components; retain their upstream notices as well. 2026-10-17
pocket_tts kyutai/pocket-tts, including French CC-BY-4.0 Yes Packaged language checkpoints, including the six-layer French model, share the upstream model-card license. Attribution required. 2026-10-14
pocket_tts_small kyutai/pocket-tts CC-BY-4.0 Yes English 18M, 7M and 2M checkpoints, including ReFL variants. Attribution required. 2026-11-03
pulsevad AydinAdnan/PulseVAD MIT Yes 2026-09-21
qwen3_asr Qwen/Qwen3-ASR-0.6B
Qwen/Qwen3-ASR-1.7B-hf
mohammedaly22/QwenCleo-ASR
Apache-2.0 Yes 2026-10-04
qwen3_forced_aligner Qwen/Qwen3-ForcedAligner-0.6B Apache-2.0 Yes 2026-09-21
qwen3_tts Qwen/Qwen3-TTS-12Hz-0.6B-Base
Qwen/Qwen3-TTS-12Hz-1.7B-Base
Qwen/Qwen3-TTS-12Hz-1.7B-CustomVoice
Qwen/Qwen3-TTS-12Hz-1.7B-VoiceDesign
Apache-2.0 Yes 2026-09-21
realtime_reuse nvidia/Real-time_RE-USE NVIDIA One-Way Noncommercial License (NSCLv1) No Causal checkpoint with exit-layer and lookahead controls. 2026-11-02
reuse nvidia/RE-USE NVIDIA One-Way Noncommercial License (NSCLv1) No Research and noncommercial use only. 2026-09-27
rvc lj1995/VoiceConversionWebUI MIT Unclear The base models (HuBERT, RMVPE) are MIT. The packaged voices (manthos, chocola, fraise) have no documented source or license. 2026-09-21
sam_audio facebook/sam-audio-small SAM License Yes The packaged Google T5 Base text encoder retains its Apache-2.0 license. 2026-09-26
samsone SamsungLabs/samsone Not stated Unclear The upstream repository and v1.0.0 release do not publish model-weight license terms. 2026-09-26
sanotts ampixa/sanoTTS GPL-3.0 Yes Copyleft. 2026-09-21
seed_vc Plachta/Seed-VC
mlx-community/SeedVC-MLX
GPL-3.0 Yes Copyleft. 2026-09-21
sense_asr FunAudioLLM/SenseVoiceSmall FunASR Model Open Source License v1.1 Yes Credit the source and authors, and keep the model names. 2026-09-21
sheetsage2 m-a-p/SheetSage2 CC-BY-NC-4.0 No 2026-09-21
sherpa_kws Zipformer zh-en 3M, 2025-12-20 Apache-2.0 Yes Default Chinese-English checkpoint; model author confirmed the license. Other user-supplied exports may have different terms. 2026-10-14
sidon sarulab-speech/sidon-v0.1 MIT Yes 2026-09-28
silero_vad snakers4/silero-vad MIT Yes Bundled in assets/framework/models. 2026-09-21
smart_turn pipecat-ai/smart-turn BSD-2-Clause Yes Smart Turn v3.2. 2026-09-30
soprano_tts ekwek/Soprano-1.1-80M Apache-2.0 Yes 2026-09-21
sopro_tts samuel-vitorino/sopro-v2-turbo Apache-2.0 Yes 2026-09-21
sortformer_diar nvidia/diar_sortformer_4spk-v1 CC-BY-NC-4.0 No 2026-09-21
sortformer_diar_v2 nvidia/diar_streaming_sortformer_4spk-v2.1 NVIDIA Open Model License Yes 2026-09-21
stable_audio stabilityai/stable-audio-3-small-sfx
stabilityai/stable-audio-3-small-music
stabilityai/stable-audio-3-medium
Stability AI Community License Conditional Free while the yearly revenue of you and your affiliates stays under USD 1M; above that an enterprise license is needed. Register commercial use with Stability AI, and display "Powered by Stability AI". The Gemma text encoder falls under the Gemma Terms of Use. 2026-09-21
supertonic Supertone/supertonic-3 BigScience OpenRAIL-M Yes Its use restrictions apply and must be passed on. 2026-09-21
tf_gridnet ESPnet WSJ0-2mix checkpoint Not stated Unclear The checkpoint archive does not specify a weight license; ESPnet code is Apache-2.0. 2026-10-03
tone_color_vc myshell-ai/OpenVoiceV2 MIT Yes Standalone V2 converter. 2026-09-27
underdog_bark3 ConwayResearch/Underdog-Bark-3.0-Pro CC-BY-4.0 Yes English-only ASR variant; converted GGUFs retain the upstream NOTICE, full license, and conversion provenance. Credit Conway Research, NVIDIA and Moondream. 2026-10-29
underdog_bark3 ConwayResearch/Underdog-Bark-3.0-Plus CC-BY-4.0 Yes English-only compressed ASR checkpoint; native GGUF expansion retains NOTICE/license and conversion/rounding provenance. Credit Conway Research, NVIDIA and Moondream. 2026-10-29
underdog_bark3 ConwayResearch/Underdog-Bark-3.0 CC-BY-4.0 Yes Standard English-only compressed ASR checkpoint; converted GGUFs retain NOTICE/license and conversion provenance. Credit Conway Research, NVIDIA and Moondream. 2026-10-29
universr woongzip1/universr-audio
woongzip1/universr-speech
CC-BY-4.0 Yes 2026-09-21
vevo2 RMSnow/Vevo2 CC-BY-NC-ND-4.0 No 2026-09-21
vibeasr microsoft/VibeVoice-ASR-BitNet MIT Yes 2026-09-21
vibevoice microsoft/VibeVoice-1.5B
vibevoice/VibeVoice-7B
MIT Yes 2026-09-21
vibevoice_asr microsoft/VibeVoice-ASR MIT Yes 2026-09-21
vibevoice_asr_streaming microsoft/VibeVoice-ASR-Streaming-7B
microsoft/VibeVoice-ASR-Streaming-1.5B
MIT Yes 2026-09-21
vietneu_tts pnnbao-ump/VieNeu-TTS-v3-Turbo Apache-2.0 Yes 2026-09-21
voxcpm1 openbmb/VoxCPM-0.5B Apache-2.0 Yes 2026-09-21
voxcpm2 openbmb/VoxCPM2 Apache-2.0 Yes 2026-09-21
voxtral_realtime mistralai/Voxtral-Mini-4B-Realtime-2602 Apache-2.0 Yes 2026-09-21
voxtral_tts mistralai/Voxtral-4B-TTS-2603 CC-BY-NC-4.0 No Includes the upstream preset voice embeddings, which share the model's non-commercial license. 2026-10-07
whistle_asr Cactus-Compute/whistle Apache-2.0 Yes Pinned release includes the tokenizer, mel filterbank, and Hadamard permutations; the converter embeds its LICENSE. Independent asset provenance remains unverified. No reference code is bundled; see provenance. 2026-10-06
yue2 m-a-p/YuE2-3B CC-BY-NC-4.0 No 2026-09-21
zipvoice k2-fsa/ZipVoice Not stated Unclear The model card states no license; the code is Apache-2.0. 2026-09-21

Adding or updating a row

  • Keep one row per family, in alphabetical order. Split a family into several rows only when its models carry different licenses.
  • Link the original weights, not a GGUF conversion: the conversion keeps the original's license.
  • Read the license on the original model card and in its LICENSE file. Use the SPDX identifier where one exists (Apache-2.0, MIT, CC-BY-4.0). Otherwise use the license's own name, linked to its text.
  • Pick one of the four values under Commercial use. Put any condition in Notes, in one or two short sentences: the limit, what must be shown, or where the license does not apply.
  • Name bundled parts under a different license, such as a codec, tokenizer or text encoder, in Notes.
  • Set Checked to the date you read the license.