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Open-weight model · Image and text to text

openthai2.0-qwen3.8-27b

by iApp Technology iapp/openthai2.0-qwen3.8-27b

openthai2.0-qwen3.8-27b is an open-weight model for image and text to text from iApp Technology, released under Apache License 2.0. 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 2.1k downloads a month.

iApp Technology ร่วมกับ สมาคมผู้ประกอบการปัญญาประดิษฐ์ประเทศไทย (AIEAT) · Apache 2.0 answers with Thai knowledge in natural, explanatory Thai, leads its base model and Typhoon on agentic tool use (BFCL) — and keeps its base model's general intelligence.

Parameters27.8B
Context262,144
Weights56.5 GB
Licenseapache-2.0
AccessOpen weights
Monthly Downloads2.1k

Runs On

What it takes to serve openthai2.0-qwen3.8-27b (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.

openthai2.0-qwen3.8-27b on every accelerator the SAVRN Index prices, at every precision

Model Card

By iApp Technology, published under apache-2.0, revision c48ac175714d.

OpenThai2.0 - Opensource Thai Knowledge, Document, and Agentic AI

Release notes - v2.0.3 (1 Sep 2026) — Thai factual recall repaired: the freerecall training data carried a phantom-citation register ("บทความระบุ...") and single-shape questions; cleaned and re-drilled with model-written paraphrases. Paraphrase battery 85/104 (from 79), Thai knowledge battery 21/21, OCR-Eval-104 CER 0.084 (from 0.093), HumanEval 0.982, IFEval-TH 0.837. Known residual: some numeric facts still scatter at temperature 0.7 — use low temperature for factual queries. - v2.0.2 (31 Aug 2026) — identifies as OpenThai 2.0 (iApp Technology + AIEAT) and adds a Thai-language safety guardrail; stock chat template. Printed-OCR CER about +0.02 vs v2.0.1, other benchmarks unchanged. - v2.0.1 (30 Aug 2026) — restores closed-book Thai knowledge lost in v2.0.0 (thanks to Dr. Panutat Tejasen's ThaiEval-2026 v3). - v2.0.0 — initial release. Earlier builds: revision tags v2.0.1, v2.0.0.

Per-version benchmark tables: CHANGELOGS.md.

โมเดล AI โอเพนซอร์ส ด้านความรู้ภาษาไทย เอกสารไทย และงานเอเจนต์ · เปิดตัวโดย iApp Technology ร่วมกับ สมาคมผู้ประกอบการปัญญาประดิษฐ์ประเทศไทย (AIEAT) · Apache 2.0

Read the full model card (2,913 words)

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
iapp/openthai2.0-qwen3.8-27b
Publisher
iApp Technology
Task
Image and text to text
Modality
Image and text
Library
Not stated by the source
Parameters
27.8B parameters
Languages
th, en
Revision
c48ac175714d024605de02938974fd0d36c91eaa
First published
2026-08-19
Last updated
2026-10-04

Files and Weights

49 files, 56.5 GB in total. The weights are 19 files totalling 56.5 GB in bin, pt, pth, safetensors.

Weights19 files · 56.5 GB
Configuration12 files · 202.7 KB
Tokenizer2 files · 20.0 MB
Documentation3 files · 41.4 KB
Other12 files · 1.3 MB
Repository1 file · 2.7 KB
Every file
FileTypeSizeSHA-256
adapter/adapter_model.safetensorsWeights934.0 MB 25988c4cc05a
adapter/rng_state_0.pthWeights15.2 KB 45559f439153
adapter/rng_state_1.pthWeights15.2 KB 8f7ded10956b
adapter/rng_state_2.pthWeights15.2 KB 592fc1f0141b
adapter/scheduler.ptWeights1.5 KB 85e1be670d09
adapter/training_args.binWeights8.7 KB d7a6d33f1d06
model-00000.safetensorsWeights5.1 GB c4449ad8b9a3
model-00001.safetensorsWeights4.6 GB 1cbe1fb78c5d
model-00002.safetensorsWeights4.5 GB 634cce002008
model-00003.safetensorsWeights4.6 GB ac796ef97abd
model-00004.safetensorsWeights4.5 GB 0c8d6537bf0c
model-00005.safetensorsWeights4.6 GB 203404fb6e81
model-00006.safetensorsWeights4.6 GB b980c91ff706
model-00007.safetensorsWeights4.6 GB d2982b83ddd2
model-00008.safetensorsWeights4.5 GB d4ee02cbb2b9
model-00009.safetensorsWeights4.6 GB 8b59d10a2d90
model-00010.safetensorsWeights4.6 GB 832ce7f3fc61
model-00011.safetensorsWeights4.6 GB d57a3722e4e6
model-00012.safetensorsWeights209.8 MB 65f310d7ad56
adapter/adapter_config.jsonConfiguration1.1 KB —
adapter/additional_config.jsonConfiguration67 B —
adapter/args.jsonConfiguration20.2 KB —
adapter/trainer_state.jsonConfiguration21.3 KB —
adapter/zero_to_fp32.pyConfiguration34.9 KB —
args.jsonConfiguration20.2 KB —
config.jsonConfiguration3.7 KB —
generation_config.jsonConfiguration214 B —
model.safetensors.index.jsonConfiguration99.0 KB —
preprocessor_config.jsonConfiguration390 B —
processor_config.jsonConfiguration1.2 KB —
video_preprocessor_config.jsonConfiguration385 B —
CHANGELOGS.mdDocumentation5.7 KB —
README.mdDocumentation30.5 KB —
adapter/README.mdDocumentation5.3 KB —
adapter/latestOther14 B —
assets/banner.pngOther210.9 KB 62e4c609cc70
assets/bfcl.pngOther94.4 KB —
assets/cases/docbench_parliament_year_60_00000903_p0181.jpgOther100.4 KB 88b52c2de4d9
assets/cases/hw_cpeoph_20.jpgOther3.5 KB —
assets/cases/hw_disjoint_48.jpgOther2.8 KB —
assets/cases/wikisource_l4_ws4_53969.jpgOther199.4 KB bb2369c94fb2
assets/scoreboard.pngOther232.4 KB a65c681692f6
assets/siamai-logo.pngOther45.1 KB —
assets/social/hero-en.webpOther175.5 KB 9d30ebad1e16
assets/social/hero-th.webpOther193.8 KB feaf7e906ef1
chat_template.jinjaOther9.0 KB —
.gitattributesRepository2.7 KB —
tokenizer.jsonTokenizer20.0 MB 06b9509352d2
tokenizer_config.jsonTokenizer1.2 KB —

License and Download

License
apache-2.0
Access
Open weights, no gate
Download size
56.5 GB
Download from iApp Technology

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

Built From

Memory Requirements

PrecisionWeights in memory
As published56.5 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.

Built on This Model

Questions About openthai2.0-qwen3.8-27b

How much GPU memory does openthai2.0-qwen3.8-27b 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 openthai2.0-qwen3.8-27b 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 openthai2.0-qwen3.8-27b commercially?

Yes. openthai2.0-qwen3.8-27b 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 openthai2.0-qwen3.8-27b's context length?

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

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