// MiniCPM / VoxCPM · Text-to-speech / audio
VoxCPM1.5: VRAM & local deployment
802M parameters. About 1.0 GB at 4-bit and 2.3 GB at BF16.
released 2025-12-05licence: Commercial OKmemory figures are estimates
01Specs
| Publisher | OpenBMB · openbmb |
|---|---|
| Family / series | MiniCPM / VoxCPM · VoxCPM1.5 |
| Type | Text-to-speech / audio (text-to-speech) |
| Parameters | 802M Source: counted from official safetensors weights |
| Released weights | BF16 · 1.6 GBdownload |
| Licence | Apache-2.0 · Commercial OKPermissive licence (Apache-2.0 / MIT / CC-BY / OpenMDW): commercial use allowed. |
| Released | 2025-12-05 (Hugging Face repo created) |
02How much VRAM it needs (estimate)
Audio models are small; the weight size is close to the total memory needed.
| Precision | Weights | Weights + overhead | Smallest GPU | Mac |
|---|---|---|---|---|
| BF16 / FP16 (original) | 1.6 GB | 2.3 GB | 8GB GPU | Mac 16GB |
| FP8 / INT8 / Q8_0 | 0.8 GB | 1.4 GB | 8GB GPU | Mac 16GB |
| 4-bit (Q4_K_M / AWQ / GPTQ-Int4) | 0.5 GB | 1.0 GB | 8GB GPU | Mac 16GB |
Bits per weight: BF16 16, FP8 8.5, 4-bit 4.85. “Fits” = total ≤ 90% of memory; Mac GPU can use ~2/3 of unified memory (≤36GB) or ~3/4 (larger). For MoE, all experts must be in memory, so size by total parameters. Method →
03How to run it
Only runtimes the publisher or the runtime’s official library names for this model.
The official card does not name a runtime; see the repository.
04Official repositories & quantised builds
1 official repo(s) from openbmb.
- VoxCPM1.5 main
05Other MiniCPM / VoxCPM models
All 23 →| Model | Params | 4-bit total | Released |
|---|---|---|---|
| MiniCPM-V-4.7-35B-A3B | 35.2B / 3B | 24.2 GB | 2026-10-07 |
| MiniCPM-V-4.7-1B | 1.55B | 1.6 GB | 2026-10-06 |
| MiniCPM5-2B | 2.52B | 2.5 GB | 2026-09-06 |
| MiniCPM5-1B | 1.08B | 1.4 GB | 2026-05-21 |
| MiniCPM-V-4.6-Thinking | 1.3B | 1.5 GB | 2026-05-08 |
| MiniCPM-V-4.6 | 1.3B | 1.5 GB | 2026-04-13 |
| VoxCPM2 | 2.29B | 2.0 GB | 2026-04-03 |
| MiniCPM-SALA | 9.48B | 7.1 GB | 2026-02-11 |
06Sources
Data checked 2026-08-18. Parameters, context and licence are copied from the official repository; memory figures are our estimates.