# iApp Technology: openthai-systemone

> A Thai-and-English System One model. Qwen3.5-0.8B continued-pretrained on about 5B Thai tokens, its language-model head replaced by a 256-way slot head (slot 255 abstains), trained on 2–3M decision examples and temperature-calibrated per question type.

- Page: https://systemonemodels.ai/iapp-technology/openthai-systemone
- API: https://api.systemonemodels.ai/v1/models/iapp-technology/openthai-systemone
- Download: `pip install systemonemodels && systemone pull iapp-technology/openthai-systemone`

## Facts

| | |
|---|---|
| Maker | iApp Technology (https://systemonemodels.ai/iapp-technology) |
| Decides | choice, score, noul, classify, route |
| Architecture | openthai |
| Base model | qwen/qwen3.5-0.8b-base |
| Parameters | 800M |
| Licence | apache-2.0 |
| Availability | Open weights |
| Released | 2026-09-20 |
| Latest version | 0.3.0 |

## Reported evaluation

Suite: Bespoke public subsets (13, macro average). Numbers are the publisher's own.

- Decision accuracy: 74.3%

- Median latency: 40 ms

## Model card

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# OpenThai-SystemOne

A Thai-and-English System One model. Qwen3.5-0.8B continued-pretrained on about 5B Thai tokens, its language-model head replaced by a 256-way slot head (slot 255 abstains), trained on 2–3M decision examples and temperature-calibrated per question type.

Version 0.3 scores 74.3% macro across Bespoke's 13 public subsets (Nimble-9B 74.8%, Jev 76.0%); per-subset calibration error ranges from 0.035 to 0.371, with an English median of 0.15. It needs trust_remote_code for its custom architecture, mirrors /v1/systemone, and takes up to 255 options and 2–10 score levels. Latency is 40–48 ms on an H100 with 255 options and 154 ms on an M3 Max. iApp also runs a free hosted endpoint.

## What it decides

- **choice** — picks one option from a set
- **score** — places the input on an ordered scale
- **noul** — answers a yes/no question with one calibrated probability
- **classify** — assigns a category from a fixed taxonomy
- **route** — sends the input to one of several destinations

## At a glance

| | |
|---|---|
| Parameters | 0.8B |
| Base model | `qwen/qwen3.5-0.8b-base` |
| Maker | iApp Technology |
| Released | 2026-09-20 |
| License | apache-2.0 |
| Reported accuracy | 74.3% |
| Reported latency | 40–48 ms on H100 with 255 options; 154 ms on M3 Max |

## Get the weights

```bash
pip install systemonemodels
systemone pull iapp-technology/openthai-systemone
```

The files are served from the maker's Hugging Face repository, [`iapp/OpenThai-SystemOne`](https://huggingface.co/iapp/OpenThai-SystemOne), and verified against the checksums recorded here.

## Read more

- [Source](https://github.com/iapp-technology/openthai-systemone)
- [Weights on Hugging Face](https://huggingface.co/iapp/OpenThai-SystemOne)

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*This page was opened by System One for iApp Technology, who can claim the organisation and take it over at any time.*

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From System One Models — https://systemonemodels.ai/ · every System One model: https://systemonemodels.ai/system-one-models