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Open-weight model · Text ranking

SKILLRET-Reranker-0.6B

by ThakiCloud ThakiCloud/SKILLRET-Reranker-0.6B

SKILLRET-Reranker-0.6B is an open-weight model for text ranking from ThakiCloud, released under Apache License 2.0. It has 596M parameters and a 40,960-token context. At 16-bit it needs about 1.4 GB of GPU memory, which fits on 1x MI300X from $1.85 an hour, at the lowest prices in the SAVRN Index. It draws 100 downloads a month.

This is a reranker fine-tuned for AI agent skill retrieval. Given a natural-language user request and a candidate agent skill, it scores how relevant and useful the skill is for the request.

Parameters596M
Context40,960
Weights1.2 GB
Licenseapache-2.0
AccessOpen weights
Monthly Downloads100

Runs On

What it takes to serve SKILLRET-Reranker-0.6B (596M 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 1.2 GB 1.4 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 0.6 GB 0.7 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
4-bit 0.3 GB 0.4 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.

SKILLRET-Reranker-0.6B on every accelerator the SAVRN Index prices, at every precision

Model Card

By ThakiCloud, published under apache-2.0, revision ce09c883af78.

This is a reranker fine-tuned for AI agent skill retrieval. Given a natural-language user request and a candidate agent skill, it scores how relevant and useful the skill is for the request. It is designed as the second stage after a first-stage retriever such as SkillRet-Embedding-0.6B or SkillRet-Embedding-8B.

The model is fine-tuned from Qwen/Qwen3-Reranker-0.6B on the SkillRet benchmark training split with binary cross-entropy on the yes/no token probability. It keeps the scoring interface of Qwen3-Reranker.

Technical report: SkillRet: A Large-Scale Benchmark for Skill Retrieval in LLM Agents (arXiv:2605.05726)

Usage

Transformers

Read the full model card (603 words)

Configuration

Architecture
Qwen3ForCausalLM
Context length (tokens)
40,960
Layers
28
Hidden size
1,024
Feed-forward size
3,072
Attention heads
16
Key/value heads
8
Head dimension
128
Vocabulary size
151,669
Model type
qwen3

Identity and Version

Repository
ThakiCloud/SKILLRET-Reranker-0.6B
Publisher
ThakiCloud
Task
Text ranking
Modality
Other
Library
transformers
Parameters
596M parameters
Languages
en
Revision
ce09c883af78affc72a85014e040f3d28a5b1711
First published
2026-09-22
Last updated
2026-09-24

Files and Weights

8 files, 1.2 GB in total. The weights are 1 file totalling 1.2 GB in safetensors.

Weights1 file · 1.2 GB
Configuration2 files · 1.6 KB
Tokenizer2 files · 11.4 MB
Documentation1 file · 5.9 KB
Other1 file · 741 B
Repository1 file · 1.6 KB
Every file
FileTypeSizeSHA-256
model.safetensorsWeights1.2 GB ace7f2068c57
config.jsonConfiguration1.4 KB —
generation_config.jsonConfiguration187 B —
README.mdDocumentation5.9 KB —
chat_template.jinjaOther741 B —
.gitattributesRepository1.6 KB —
tokenizer.jsonTokenizer11.4 MB be75606093db
tokenizer_config.jsonTokenizer375 B —

License and Download

License
apache-2.0
Access
Open weights, no gate
Download size
1.2 GB
Download from ThakiCloud

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

Built From

Memory Requirements

PrecisionWeights in memory
As published1.2 GB
16-bit1.2 GB
8-bit0.6 GB
4-bit0.3 GB

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

Questions About SKILLRET-Reranker-0.6B

How much GPU memory does SKILLRET-Reranker-0.6B need?

About 1.4 GB at 16-bit and 0.4 GB at 4-bit: the weights (596M parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run SKILLRET-Reranker-0.6B 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 SKILLRET-Reranker-0.6B commercially?

Yes. SKILLRET-Reranker-0.6B 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 SKILLRET-Reranker-0.6B's context length?

40,960 tokens, from the maximum position embeddings in its published configuration.

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