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Open-weight model · Text generation

Vigyan-1.5B-4x-MoE

by Shreyansh singh shreyansh12183/Vigyan-1.5B-4x-MoE

Vigyan-1.5B-4x-MoE is an open-weight model for text generation from Shreyansh singh, released under Creative Commons Attribution-NonCommercial 4.0. It has 6.4B parameters and a 131,072-token context. At 16-bit it needs about 15.4 GB of GPU memory, which fits on 1x MI300X from $1.85 an hour, at the lowest prices in the SAVRN Index. It draws 13 downloads a month.

Vigyan-1.5B 4× MoE is an experimental Sparse Mixture of Experts model upcycled from 4 specialized domain LoRA adapters (Science, Technology, Engineering, Mathematics).

Parameters6.4B
Context131,072
Weights16.7 GB
Licensecc-by-nc-4.0
AccessOpen weights
Monthly Downloads13

Runs On

What it takes to serve Vigyan-1.5B-4x-MoE (6.4B 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 12.8 GB 15.4 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 6.4 GB 7.7 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
4-bit 3.2 GB 3.8 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.

Vigyan-1.5B-4x-MoE on every accelerator the SAVRN Index prices, at every precision

Model Card

Vigyan-1.5B 4× MoE is an experimental Sparse Mixture of Experts model upcycled from 4 specialized domain LoRA adapters (Science, Technology, Engineering, Mathematics). It was assembled to evaluate whether post-hoc expert stitching on compact language models ($\le 3\text{B}$) can deliver multi-domain specialization at single-expert inference latency with a sub-1GB RAM footprint. A pre-quantized standalone GGUF (vigyan-1.5b-4x-moe.Q4KM.gguf) is available directly within this repository for instantaneous local execution on CPU or mobile. Test this model on Google Colab with an embedded Gradio chat interface: - shreyansh12183/vigyan-1.5b-adapter-science…

Excerpt from the card by Shreyansh singh, licensed cc-by-nc-4.0.

Configuration

Architecture
Qwen2MoeForCausalLM
Context length (tokens)
131,072
Layers
28
Hidden size
1,536
Feed-forward size
8,960
Attention heads
12
Key/value heads
2
Vocabulary size
151,936
Experts
4
Experts active per token
1
Model type
qwen2_moe

Identity and Version

Repository
shreyansh12183/Vigyan-1.5B-4x-MoE
Publisher
Shreyansh singh
Task
Text generation
Modality
Text
Library
Not stated by the source
Parameters
6.4B parameters
Languages
moe
Revision
eaa10f68f1f7e403fe4d7998cd9fe94415deeb64
First published
2026-10-05
Last updated
2026-10-06

Files and Weights

15 files, 16.7 GB in total. The weights are 4 files totalling 16.7 GB in gguf, safetensors.

Weights4 files · 16.7 GB
Configuration5 files · 68.2 KB
Tokenizer2 files · 11.4 MB
Documentation2 files · 5.0 KB
Other1 file · 2.2 KB
Repository1 file · 1.6 KB
Every file
FileTypeSizeSHA-256
model-00001-of-00003.safetensorsWeights5.0 GB 2226bf6df3a0
model-00002-of-00003.safetensorsWeights5.0 GB 14fa22ebe6c1
model-00003-of-00003.safetensorsWeights2.8 GB 46de4dda985d
vigyan-1.5b-4x-moe.Q4_K_M.ggufWeights3.9 GB 0ef5e6f19b8a
battle_test_report_1_5b.jsonConfiguration483 B —
config.jsonConfiguration1.7 KB —
mergekit_moe_config.ymlConfiguration1.5 KB —
model.safetensors.index.jsonConfiguration63.4 KB —
moe_head_to_head_100_battle_test.jsonConfiguration1.1 KB —
HEAD_TO_HEAD_BATTLE_TEST.mdDocumentation1.3 KB —
README.mdDocumentation3.7 KB —
chat_template.jinjaOther2.2 KB —
.gitattributesRepository1.6 KB —
tokenizer.jsonTokenizer11.4 MB 06ca58db9825
tokenizer_config.jsonTokenizer423 B —

License and Download

License
cc-by-nc-4.0
Access
Open weights, no gate
Download size
16.7 GB
Download from Shreyansh singh

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

Built From

Memory Requirements

PrecisionWeights in memory
As published16.7 GB
16-bit12.8 GB
8-bit6.4 GB
4-bit3.2 GB

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

Questions About Vigyan-1.5B-4x-MoE

How much GPU memory does Vigyan-1.5B-4x-MoE need?

About 15.4 GB at 16-bit and 3.8 GB at 4-bit: the weights (6.4B parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run Vigyan-1.5B-4x-MoE 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 Vigyan-1.5B-4x-MoE commercially?

Not without separate permission. Vigyan-1.5B-4x-MoE is released under Creative Commons Attribution-NonCommercial 4.0. CC BY-NC 4.0 permits sharing and adapting with credit for non-commercial purposes only. Commercial use needs separate permission from the rights holder.

What is Vigyan-1.5B-4x-MoE's context length?

131,072 tokens, from the maximum position embeddings in its published configuration.

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