45M CNN. Phases: SFT -> SF Distill -> On-Policy -> Endgame Self-Play.
Runs On
What it takes to serve Test-S4 (45M parameters): the memory its weights need at each precision, and the cheapest way to rent enough data-center GPUs to hold them.
| Precision | Weights | Memory needed | Cheapest setup | Per hour | Also fits |
|---|---|---|---|---|---|
| 16-bit | 0.1 GB | 0.1 GB | 1x MI300X (192 GB) Vultr |
$1.85 | 1x H100 $1.99 · 1x MI325X $2.00 |
| 8-bit | 0.0 GB | 0.1 GB | 1x MI300X (192 GB) Vultr |
$1.85 | 1x H100 $1.99 · 1x MI325X $2.00 |
| 4-bit | 0.0 GB | 0.0 GB | 1x MI300X (192 GB) Vultr |
$1.85 | 1x H100 $1.99 · 1x MI325X $2.00 |
Memory is the weights at that precision plus 20% for the runtime and a short context; a long context needs more. Prices are the lowest on-demand hourly rates in the SAVRN Index, read Sep 18, 2026.
Model Card
45M CNN. Phases: SFT -> SF Distill -> On-Policy -> Endgame Self-Play.
Excerpt from the card by Mr. Black Beard.
Configuration
- Architecture
- ChessNet
- Model type
- chessnet
Identity and Version
- Repository
- CyanMonkey/Test-S4
- Publisher
- Mr. Black Beard
- Task
- Not stated by the source
- Modality
- Other
- Library
- Not stated by the source
- Parameters
- 45M parameters
- Languages
- Not stated by the source
- Revision
- 300ec326a2c2950d66282ea7986d7f2bcfdd4e38
- First published
- 2026-09-17
- Last updated
- 2026-09-18
Files and Weights
8 files, 719.8 MB in total. The weights are 3 files totalling 719.8 MB in pt, safetensors.
Every file
| File | Type | Size | SHA-256 |
|---|---|---|---|
| checkpoints/model.safetensors | Weights | 179.9 MB | 19b2b84cc946 |
| checkpoints/optimizer.pt | Weights | 359.9 MB | d15e2cc0562b |
| model.safetensors | Weights | 179.9 MB | 19b2b84cc946 |
| checkpoints/training_state.json | Configuration | 298 B | — |
| config.json | Configuration | 162 B | — |
| modeling_chessnet.py | Configuration | 8.6 KB | — |
| README.md | Documentation | 88 B | — |
| .gitattributes | Repository | 1.5 KB | — |
License and Download
- License
- Not stated by the source
- Access
- Open weights, no gate
- Download size
- 719.8 MB
Released by Mr. Black Beard through its official repository on Hugging Face.
Memory Requirements
| Precision | Weights in memory |
|---|---|
| As published | 719.8 MB |
| 16-bit | 0.1 GB |
| 8-bit | 0.0 GB |
| 4-bit | 0.0 GB |
Weights only, from the published parameter count; the key-value cache and runtime add to this.
Questions About Test-S4
How much GPU memory does Test-S4 need?
About 0.1 GB at 16-bit and 0 GB at 4-bit: the weights (45M parameters) plus a working margin. A long context needs more.
What is the cheapest GPU to run Test-S4 on?
At 16-bit, 1x MI300X from $1.85 an hour; at 4-bit, 1x MI300X from $1.85 an hour, at the lowest on-demand prices the SAVRN Index lists.