Model reference · open weights
URSA-IBQ512 is an open-weight image model from BAAI, listed in the AxForge catalogue. AxForge can bring it up on EU-owned hardware for you on request — with the licence handled where one is required.
About
URSA-1.7B-IBQ512 Model Card Model Details - Developed by: BAAI - Model type: Text-to-Image Generation Model - Model size: 1.7B - Model precision: torch.float16 (FP16) - Model resolution: 512x512 - Model paper: Uniform Discrete Diffusion with Metric Path for Video Generation - Model family: BAAI-Vision-URSA - Model Tokenizer: Emu3.5-Vision-Tokenizer - Model Description: This is a model that can be used to generate and modify images based on text prompts. Examples Using the 🤗's Diffusers library to run URSA in a simple and efficient manner. Running the pipeline: Uses Direct Use The model is intended for research purposes only. Possible research areas and tasks include - Research on generative models. - Applications in educational or creative tools. - Generation of artworks and use in design and other artistic processes. - Probing and understanding the limitations and biases of generative models. - Safe deployment of models which have the potential to generate harmful content. Excluded uses are described below. Out-of-Scope Use The model was not trained to be factual or true representations of people or events, and therefore using the model to generate such content is out-of-scope for the abilities of this model. Misuse and Malicious Use Using the model to generate content that is cruel to individuals is a misuse of this model. This includes, but is not limited to: - Mis- and disinformation. - Representations of egregious violence and gore. - Impersonating individuals without their consent. - Sexual content without consent of the people who might see it. - Sharing of copyrighted or licensed material in violation of its terms of use. - Intentionally promoting or propagating discriminatory content or harmful stereotypes. - Sharing content that is an alteration of copyrighted or licensed material in violation of its terms of use. - Generating demeaning, dehumanizing, or otherwise harmful representations of people or their environments, cultures, religions, etc. Limitations and Bias Limitations - The autoencoding part of the model is lossy. - The model cannot render complex legible text. - The model does not achieve perfect photorealism. - The fingers, .etc in general
Summarised from the published model card. Read the full card on the HuggingFace links below.
Specifications
| Maker | BAAI |
|---|---|
| Type | Image models |
| Parameters (lead) | 2.3B |
| Variants | 1 |
| Runs with | diffusers |
| Based on | Qwen/Qwen3-1.7B |
| Released | 2026-04-10 |
| Popularity | 8 downloads / month |
| Likes | 4 |
| Licence | Open weights |
How it works
Variants
Open weights ship in several sizes and precisions. One page, all the variants — pick the one that fits your GPU. VRAM figures are estimates from model size.
| Variant | Params | Precision | VRAM | Fits 16 GB | Weights |
|---|---|---|---|---|---|
| URSA-1.7B-IBQ512 | 2.3B | BF16 | ~5.2 GB | ✓ | Weights ↗ |
Using it via the API
Once AxForge deploys ursa-ibq512 for you, it answers on the OpenAI-compatible API — the same base URL and keys as every other model. (ursa-ibq512 below is illustrative; you get the exact model name on deployment.)
$ curl -sS https://api.axforge.ai/v1/images/generations \
-H "Authorization: Bearer $AXFORGE_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"ursa-ibq512","prompt":"a red bicycle","size":"1024x1024"}'
Licence
Open weights under apache-2.0 — commercial use is permitted. Deploy it on AxForge EU hardware on request. Read the licence ↗