chatterbox vs VibeVoice-1.5B
Specs, VRAM requirements and download trends — updated 20 September 2026.
Specification comparison
Differences are highlighted; identical values are muted.
| Specification | chatterbox | VibeVoice-1.5B |
|---|---|---|
| Parameters | — | 2.7 B |
| Architecture | — | VibeVoiceForConditionalGeneration |
| Context length | — | — |
| Licence | mit | mit |
| Commercial use | Allowed | Allowed |
| Languages | 23 | 2 |
| Downloads 30d | 1,849,950 | 482,056 |
| Downloads all time | 22.0 M | 3.3 M |
| Quantizations on the Hub | SAFETENSORS | SAFETENSORS |
| Gated | No | No |
| First seen on the Hub | 2025-04-24 | 2025-08-25 |
Download trend
Daily snapshots, last 55 days (28 Jul – 20 Sep)
2.6 M401 K
chatterbox
VibeVoice-1.5B
VRAM side by side
On RTX 4090 · 24 GB · 8K context unless noted
VibeVoice-1.5B · fp16
6.9 GB / 24 GB
chatterbox · fp16
12.2 GB / 24 GB