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Open-weight model · Feature extraction

matilda-jev-v1

by Maincode Maincode/matilda-jev-v1

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.

Parameters26.1B
Context262,144
Weights52.2 GB
Licenseapache-2.0
AccessOpen weights
Monthly Downloads225

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.

PrecisionWeightsMemory neededCheapest setupPer hourAlso 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.

Read the full model card (474 words)

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.

Weights12 files · 52.2 GB
Configuration20 files · 171.9 KB
Tokenizer2 files · 20.0 MB
Documentation2 files · 16.1 KB
Other4 files · 33.1 KB
Repository1 file · 1.6 KB
Every file
FileTypeSizeSHA-256
model-00001-of-00011.safetensorsWeights5.0 GB ad9615133ae2
model-00002-of-00011.safetensorsWeights5.0 GB f1488d845eec
model-00003-of-00011.safetensorsWeights4.9 GB 53d90ef212d0
model-00004-of-00011.safetensorsWeights5.0 GB 2288a0f3d9dd
model-00005-of-00011.safetensorsWeights5.0 GB e7a08e2b452a
model-00006-of-00011.safetensorsWeights4.9 GB 688723f918f8
model-00007-of-00011.safetensorsWeights5.0 GB 9251e36e82d2
model-00008-of-00011.safetensorsWeights4.9 GB 59bf8ac0ae5b
model-00009-of-00011.safetensorsWeights5.0 GB cc010e178005
model-00010-of-00011.safetensorsWeights4.9 GB 95b271104f64
model-00011-of-00011.safetensorsWeights2.6 GB 8b17d96a9816
readout.safetensorsWeights2.6 MB 262b432eea8c
CPU_TEST.jsonConfiguration370 B —
PACKAGE_MANIFEST.jsonConfiguration6.0 KB —
TEST_REPORT.jsonConfiguration2.5 KB —
WEIGHTS_VERIFIED.jsonConfiguration2.4 KB —
config.jsonConfiguration3.9 KB —
configuration_matilda_jev.pyConfiguration603 B —
decision_config.jsonConfiguration5.4 KB —
model.safetensors.index.jsonConfiguration104.0 KB —
modeling_matilda_jev.pyConfiguration1.3 KB —
processing_matilda_jev.pyConfiguration1.5 KB —
processor_config.jsonConfiguration1.3 KB —
runtime/maincode_jev_serve/__init__.pyConfiguration —
runtime/maincode_jev_serve/ask.pyConfiguration4.8 KB —
runtime/maincode_jev_serve/config.pyConfiguration2.1 KB —
runtime/maincode_jev_serve/decide.pyConfiguration3.7 KB —
runtime/maincode_jev_serve/engine.pyConfiguration3.3 KB —
runtime/maincode_jev_serve/model.pyConfiguration14.4 KB —
runtime/maincode_jev_serve/server.pyConfiguration12.2 KB —
runtime/maincode_jev_serve/types.pyConfiguration1.9 KB —
tokenization_matilda_jev.pyConfiguration280 B —
LICENSEDocumentation11.5 KB —
README.mdDocumentation4.5 KB —
USAGE.txtOther2.4 KB —
chat_template.jinjaOther9.0 KB —
requirements-runtime.txtOther220 B —
runtime/maincode_jev_serve/playground.htmlOther21.5 KB —
.gitattributesRepository1.6 KB —
tokenizer.jsonTokenizer20.0 MB 6f32ce20dc35
tokenizer_config.jsonTokenizer1.5 KB —

License and Download

License
apache-2.0
Access
Open weights, no gate
Download size
52.2 GB
Download from Maincode

Released by Maincode through its official repository on Hugging Face. Read the license.

Built From

Memory Requirements

PrecisionWeights in memory
As published52.2 GB
16-bit52.2 GB
8-bit26.1 GB
4-bit13.0 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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