This model is a fine-tuned version of JetLM/SDAR-8B-Chat-b8 on the sdarwebshopbs4eighthreason dataset. The following hyperparameters were used during training: - learningrate: 1e-05 - trainbatchsize: 1 - evalbatchsize: 8 - distributedtype: multi-GPU - numdevices: 4 - totaltrainbatchsize: 4 - totalevalbatchsize: 32 - lrschedulertype: constantwithwarmup - lrschedulerwarmupratio: 0.03 - numepochs: 1.0 - Transformers 4.52.4 - Pytorch 2.9.1+cu129 - Datasets 3.6.0 - Tokenizers 0.21.1
matilda-jev-v1 is an open-weight model for feature extraction from Maincode, released under Apache License 2.0. It has 26.1B parameters and a 262,144-token context. At 16-bit it needs about 62.6 GB of GPU memory, which fits on 1x MI300X from $1.85 an hour, at the lowest prices in the SAVRN Index. It draws 225 downloads a month.
Matilda-Jev is Maincode's one-pass decision model. It scores the options supplied in a choice, noul (yes/no), or ordered score question. It accepts text or JSON state and optional images.
Runs On
What it takes to serve matilda-jev-v1 (26.1B 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 | 52.2 GB | 62.6 GB | 1x MI300X (192 GB) Vultr |
$1.85 | 1x H100 $1.99 · 1x MI325X $2.00 |
| 8-bit | 26.1 GB | 31.3 GB | 1x MI300X (192 GB) Vultr |
$1.85 | 1x H100 $1.99 · 1x MI325X $2.00 |
| 4-bit | 13.0 GB | 15.7 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 Oct 7, 2026.
matilda-jev-v1 on every accelerator the SAVRN Index prices, at every precision
Model Card
By Maincode, published under apache-2.0, revision 3dd1a9db4c33.
Matilda-Jev by Maincode
Matilda-Jev is Maincode's one-pass decision model. It scores the options supplied in a choice, noul (yes/no), or ordered score question. It accepts text or JSON state and optional images. This is a decision checkpoint with a 255-option readout, not a text-generation checkpoint.
This configuration edition uses MatildaJevModel, MatildaJevConfig, and MATILDA tokenizer/processor classes. Use the bundled runtime below, or load the custom AutoClasses with trust_remote_code=True. The package includes the backbone weights, decision readout, tokenizer, preprocessing configuration and calibrated temperature.
Validation
On AMD MI355X with Python 3.12, Transformers 5.17.0 and PyTorch 2.14.0:
- 25/25 smoke-test questions passed, including six product-identity questions and an image question.
- All 23 requests matched the original checkpoint's answer probabilities exactly (maximum difference 0).
- Tokenization, image preprocessing, configuration save/reload and architecture-parameter comparisons passed.
- A real forward/backward pass produced finite, nonzero readout and embedding gradients. No optimizer update was applied.
Configuration
- Architecture
- MatildaJevModel
- Context length (tokens)
- 262,144
- Layers
- 64
- Hidden size
- 5,120
- Feed-forward size
- 17,408
- Attention heads
- 24
- Key/value heads
- 4
- Head dimension
- 256
- Vocabulary size
- 248,320
- Model type
- matilda_jev
Identity and Version
- Repository
- Maincode/matilda-jev-v1
- Publisher
- Maincode
- Task
- Feature extraction
- Modality
- Text
- Library
- transformers
- Parameters
- 26.1B parameters
- Languages
- en
- Revision
- 3dd1a9db4c337f6aca80d4b682a1fcf712944d7e
- First published
- 2026-09-30
- Last updated
- 2026-10-07
Files and Weights
41 files, 52.2 GB in total. The weights are 12 files totalling 52.2 GB in safetensors.
Every file
| File | Type | Size | SHA-256 |
|---|---|---|---|
| model-00001-of-00011.safetensors | Weights | 5.0 GB | ad9615133ae2 |
| model-00002-of-00011.safetensors | Weights | 5.0 GB | f1488d845eec |
| model-00003-of-00011.safetensors | Weights | 4.9 GB | 53d90ef212d0 |
| model-00004-of-00011.safetensors | Weights | 5.0 GB | 2288a0f3d9dd |
| model-00005-of-00011.safetensors | Weights | 5.0 GB | e7a08e2b452a |
| model-00006-of-00011.safetensors | Weights | 4.9 GB | 688723f918f8 |
| model-00007-of-00011.safetensors | Weights | 5.0 GB | 9251e36e82d2 |
| model-00008-of-00011.safetensors | Weights | 4.9 GB | 59bf8ac0ae5b |
| model-00009-of-00011.safetensors | Weights | 5.0 GB | cc010e178005 |
| model-00010-of-00011.safetensors | Weights | 4.9 GB | 95b271104f64 |
| model-00011-of-00011.safetensors | Weights | 2.6 GB | 8b17d96a9816 |
| readout.safetensors | Weights | 2.6 MB | 262b432eea8c |
| CPU_TEST.json | Configuration | 370 B | — |
| PACKAGE_MANIFEST.json | Configuration | 6.0 KB | — |
| TEST_REPORT.json | Configuration | 2.5 KB | — |
| WEIGHTS_VERIFIED.json | Configuration | 2.4 KB | — |
| config.json | Configuration | 3.9 KB | — |
| configuration_matilda_jev.py | Configuration | 603 B | — |
| decision_config.json | Configuration | 5.4 KB | — |
| model.safetensors.index.json | Configuration | 104.0 KB | — |
| modeling_matilda_jev.py | Configuration | 1.3 KB | — |
| processing_matilda_jev.py | Configuration | 1.5 KB | — |
| processor_config.json | Configuration | 1.3 KB | — |
| runtime/maincode_jev_serve/__init__.py | Configuration | — | |
| runtime/maincode_jev_serve/ask.py | Configuration | 4.8 KB | — |
| runtime/maincode_jev_serve/config.py | Configuration | 2.1 KB | — |
| runtime/maincode_jev_serve/decide.py | Configuration | 3.7 KB | — |
| runtime/maincode_jev_serve/engine.py | Configuration | 3.3 KB | — |
| runtime/maincode_jev_serve/model.py | Configuration | 14.4 KB | — |
| runtime/maincode_jev_serve/server.py | Configuration | 12.2 KB | — |
| runtime/maincode_jev_serve/types.py | Configuration | 1.9 KB | — |
| tokenization_matilda_jev.py | Configuration | 280 B | — |
| LICENSE | Documentation | 11.5 KB | — |
| README.md | Documentation | 4.5 KB | — |
| USAGE.txt | Other | 2.4 KB | — |
| chat_template.jinja | Other | 9.0 KB | — |
| requirements-runtime.txt | Other | 220 B | — |
| runtime/maincode_jev_serve/playground.html | Other | 21.5 KB | — |
| .gitattributes | Repository | 1.6 KB | — |
| tokenizer.json | Tokenizer | 20.0 MB | 6f32ce20dc35 |
| tokenizer_config.json | Tokenizer | 1.5 KB | — |
License and Download
- License
- apache-2.0
- Access
- Open weights, no gate
- Download size
- 52.2 GB
Released by Maincode through its official repository on Hugging Face. Read the license.
Built From
- Derived from Qwen/Qwen3.8-27B
Memory Requirements
| Precision | Weights in memory |
|---|---|
| As published | 52.2 GB |
| 16-bit | 52.2 GB |
| 8-bit | 26.1 GB |
| 4-bit | 13.0 GB |
Weights only, from the published parameter count; the key-value cache and runtime add to this.
Questions About matilda-jev-v1
How much GPU memory does matilda-jev-v1 need?
About 62.6 GB at 16-bit and 15.7 GB at 4-bit: the weights (26.1B parameters) plus a working margin. A long context needs more.
What is the cheapest GPU to run matilda-jev-v1 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.
Can I use matilda-jev-v1 commercially?
Yes. matilda-jev-v1 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.
What is matilda-jev-v1's context length?
262,144 tokens, from the maximum position embeddings in its published configuration.
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