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Open-weight model · Image and text to text

feyospace-v1.1-small

by Feyospace feyospace/feyospace-v1.1-small

feyospace-v1.1-small is an open-weight model for image and text to text from Feyospace. It has 27.8B parameters and a 262,144-token context. At 16-bit it needs about 66.7 GB of GPU memory, which fits on 1x MI300X from $1.85 an hour, at the lowest prices in the SAVRN Index. It draws 78 downloads a month.

Feyospace-v1.1-small is the updated small checkpoint in the Feyospace family of open-weight cyber agents, developed by the Feyospace Team at Vera Praxis. It is referred to as Feyospace-s1 (v1.1) in our release blog.

Parameters27.8B
Context262,144
Weights55.6 GB
License—
AccessOpen weights
Monthly Downloads78

Runs On

What it takes to serve feyospace-v1.1-small (27.8B 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 55.6 GB 66.7 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 27.8 GB 33.3 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
4-bit 13.9 GB 16.7 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.

feyospace-v1.1-small on every accelerator the SAVRN Index prices, at every precision

Model Card

Feyospace-v1.1-small is the updated small checkpoint in the Feyospace family of open-weight cyber agents, developed by the Feyospace Team at Vera Praxis. It is referred to as Feyospace-s1 (v1.1) in our release blog. The model targets vulnerability research, CTF tasks, and long-horizon security workflows that combine reasoning with tool use. It achieves an 84.4% verified success rate on CyberGym under a general agent harness and 65.57% on pooled CTF suites. The checkpoint follows the Qwen3.5 architecture and contains approximately 28B parameters. We release BF16 Safetensors weights together with the tokenizer, processor, and chat template. The context length above comes from the released…

Excerpt from the card by Feyospace.

Configuration

Architecture
Qwen3_5ForConditionalGeneration
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
qwen3_5

Identity and Version

Repository
feyospace/feyospace-v1.1-small
Publisher
Feyospace
Task
Image and text to text
Modality
Image and text
Library
transformers
Parameters
27.8B parameters
Languages
Not stated by the source
Revision
ab6a8372eceb18c10357e2683ce14808217bf5e9
First published
2026-09-23
Last updated
2026-10-06

Files and Weights

21 files, 55.6 GB in total. The weights are 12 files totalling 55.6 GB in safetensors.

Weights12 files · 55.6 GB
Configuration4 files · 117.5 KB
Tokenizer2 files · 20.0 MB
Documentation1 file · 6.4 KB
Other1 file · 9.0 KB
Repository1 file · 1.6 KB
Every file
FileTypeSizeSHA-256
model-00001-of-00012.safetensorsWeights5.0 GB a8e76f50570b
model-00002-of-00012.safetensorsWeights5.0 GB 9215646dd87f
model-00003-of-00012.safetensorsWeights4.9 GB 569cafb846d7
model-00004-of-00012.safetensorsWeights5.0 GB 36d840b35e07
model-00005-of-00012.safetensorsWeights4.9 GB 89ebd192ccdc
model-00006-of-00012.safetensorsWeights5.0 GB 79ea8cc9988b
model-00007-of-00012.safetensorsWeights4.9 GB a68383ec79d8
model-00008-of-00012.safetensorsWeights5.0 GB dbf2445248a3
model-00009-of-00012.safetensorsWeights4.9 GB 477d6fac7473
model-00010-of-00012.safetensorsWeights5.0 GB d5439007c17d
model-00011-of-00012.safetensorsWeights3.5 GB 208c194cff0e
model-00012-of-00012.safetensorsWeights2.5 GB c4c490c1aab2
config.jsonConfiguration3.7 KB —
model.safetensors.index.jsonConfiguration112.2 KB —
preprocessor_config.jsonConfiguration390 B —
processor_config.jsonConfiguration1.2 KB —
README.mdDocumentation6.4 KB —
chat_template.jinjaOther9.0 KB —
.gitattributesRepository1.6 KB —
tokenizer.jsonTokenizer20.0 MB 06b9509352d2
tokenizer_config.jsonTokenizer1.2 KB —

License and Download

License
Not stated by the source
Access
Open weights, no gate
Download size
55.6 GB
Download from Feyospace

Released by Feyospace through its official repository on Hugging Face.

Built From

  • Described by arXiv:2609.08418

Memory Requirements

PrecisionWeights in memory
As published55.6 GB
16-bit55.6 GB
8-bit27.8 GB
4-bit13.9 GB

Weights only, from the published parameter count; the key-value cache and runtime add to this.

Questions About feyospace-v1.1-small

How much GPU memory does feyospace-v1.1-small need?

About 66.7 GB at 16-bit and 16.7 GB at 4-bit: the weights (27.8B parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run feyospace-v1.1-small 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.

What is feyospace-v1.1-small's context length?

262,144 tokens, from the maximum position embeddings in its published configuration.

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