chatterbox vs VibeVoice-Realtime-0.5B
Specs, VRAM requirements and download trends — updated 18 September 2026.
microsoft · B · Open weights
Params
1.0 B
Context
—
30d
385 K
mit · commercial OK
Specification comparison
Differences are highlighted; identical values are muted.
| Specification | chatterbox | VibeVoice-Realtime-0.5B |
|---|---|---|
| Parameters | — | 1.0 B |
| Architecture | — | VibeVoiceStreamingForConditionalGenerationInference |
| Context length | — | — |
| Licence | mit | mit |
| Commercial use | Allowed | Allowed |
| Languages | 23 | 1 |
| Downloads 30d | 2,399,737 | 384,773 |
| Downloads all time | 25.6 M | 5.8 M |
| Quantizations on the Hub | SAFETENSORS | SAFETENSORS |
| Gated | No | No |
| First seen on the Hub | 2025-04-24 | 2025-12-04 |
Download trend
Daily snapshots, last 90 days (13 Aug – 10 Nov)
2.4 M385 K
chatterbox
VibeVoice-Realtime-0.5B
VRAM side by side
On RTX 4090 · 24 GB · 8K context unless noted
VibeVoice-Realtime-0.5B · fp16
2.9 GB / 24 GB
chatterbox · fp16
12.2 GB / 24 GB