SAVRN Model Hub · Comparisons
Qwen3-TTS-12Hz-1.7B-CustomVoice vs VibeVoice-1.5B
Qwen3-TTS-12Hz-1.7B-CustomVoice has 1.9B parameters and VibeVoice-1.5B has 2.7B parameters; Qwen3-TTS-12Hz-1.7B-CustomVoice is released under Apache License 2.0 and VibeVoice-1.5B under MIT License; at 16-bit, Qwen3-TTS-12Hz-1.7B-CustomVoice needs about 4.6 GB (1x MI300X from $1.85 an hour) and VibeVoice-1.5B about 6.5 GB (1x MI300X from $1.85 an hour).
| Field | Qwen3-TTS-12Hz-1.7B-CustomVoice Qwen/Qwen3-TTS-12Hz-1.7B-CustomVoice | VibeVoice-1.5B microsoft/VibeVoice-1.5B |
|---|---|---|
| Publisher | Qwen | Microsoft |
| Task | Text to speech | Text to speech |
| Modality | Audio | Audio |
| Parameters, as reported | 1.9B parameters | 2.7B parameters |
| Architecture | Qwen3TTSForConditionalGeneration | VibeVoiceForConditionalGeneration |
| Library | Not stated | transformers |
| Context length | Not stated | Not stated |
| Repository size | 4.5 GB | 5.4 GB |
| Artifact formats | safetensors | safetensors |
| License | apache-2.0 | mit |
| Access | Open weights, no gate | Open weights, no gate |
| Memory at 16-bit (weights and margin) | 4.6 GB | 6.5 GB |
| Cheapest GPUs at 16-bit, per hour | 1x MI300X, $1.85 | 1x MI300X, $1.85 |
| Memory at 4-bit (weights and margin) | 1.2 GB | 1.6 GB |
| Cheapest GPUs at 4-bit, per hour | 1x MI300X, $1.85 | 1x MI300X, $1.85 |
| Revision viewed | 0c0e3051f131 | c00898d257e6 |
| Downloads reported by the hub | 2.6M | 464k |
| Last observed | 2026-09-18 | 2026-09-18 |
An evaluation row appears only where at least two of these models report the same benchmark with the same stated configuration, metric, unit and setup. Different evaluators stay named in each cell. Values are shown as reported: no unit conversion, no ranking.
SAVRN's Notes on VibeVoice-1.5B
Podcast-style audio with several speakers is what Microsoft built VibeVoice for, and its acoustic and semantic tokenizers run at 7.5 Hz. The hardware ask is small: 6.5 GB of memory at 16-bit for 5.4 GB of bfloat16 weights, 3.2 GB at 8-bit, 1.6 GB at 4-bit. The cheapest slot we price is one MI300X with 192 GB at $1.85 an hour on-demand, so the sizing question is how many audio jobs you run in parallel, not whether the model fits.
MIT keeps the paperwork to a copyright and permission notice and permits commercial use, modification and redistribution. The name says 1.5B while the files hold 2.7B parameters, so budget from the 5.4 GB on disk, not the label. No context length is published, so test the script length you plan to synthesize. Nothing prices it per token on the Index, so you run it yourself.
Questions
Which is larger, Qwen3-TTS-12Hz-1.7B-CustomVoice or VibeVoice-1.5B?
VibeVoice-1.5B (2.7B parameters) is larger than Qwen3-TTS-12Hz-1.7B-CustomVoice (1.9B parameters), by the parameter counts their publishers report.
Which is cheaper to run, Qwen3-TTS-12Hz-1.7B-CustomVoice or VibeVoice-1.5B?
At 4-bit, Qwen3-TTS-12Hz-1.7B-CustomVoice fits on 1x MI300X from $1.85 an hour and VibeVoice-1.5B on 1x MI300X from $1.85 an hour, at the lowest on-demand prices the SAVRN Index lists.
Can I use Qwen3-TTS-12Hz-1.7B-CustomVoice commercially?
Yes. Qwen3-TTS-12Hz-1.7B-CustomVoice is released under Apache License 2.0. The Apache License 2.0 is a permissive open-source license. It permits commercial use, modification and redistribution. It requires keeping the license and copyright notices and any NOTICE file, stating significant changes, and it includes an express patent grant from contributors.
Can I use VibeVoice-1.5B commercially?
Yes. VibeVoice-1.5B is released under MIT License. The MIT License is a short permissive license. It permits commercial use, modification and redistribution, provided the copyright notice and permission notice are included.