Model reference · open weights
FLUX.1-Kontext-dev is an open-weight image model from QuantStack, 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
This GGUF file is a direct conversion of black-forest-labs/FLUX.1-Kontext-dev Since this is a quantized model, all original licensing terms and usage restrictions remain in effect. Usage The model can be used with the ComfyUI custom node ComfyUI-GGUF by city96 Place model files in ComfyUI/models/unet see the GitHub readme for further installation instructions.
Summarised from the published model card. Read the full card on the HuggingFace links below.
Specifications
| Maker | QuantStack |
|---|---|
| Type | Image models |
| Variants | 1 |
| Runs with | gguf |
| Based on | black-forest-labs/FLUX.1-Kontext-dev |
| Released | 2025-06-26 |
| Popularity | 39k downloads / month |
| Likes | 158 |
| Licence | Commercial licence needed |
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 |
|---|---|---|---|---|---|
| FLUX.1-Kontext-dev-GGUF | — | GGUF | — | — | Weights ↗ |
Using it via the API
Once AxForge deploys quantstack-flux-1-kontext-dev for you, it answers on the OpenAI-compatible API — the same base URL and keys as every other model. (quantstack-flux-1-kontext-dev 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":"quantstack-flux-1-kontext-dev","prompt":"a red bicycle","size":"1024x1024"}'
Details
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Licence
The weights are open but its licence needs a commercial agreement for business use. AxForge can arrange that licence and host the model for you — you pay AxForge, we settle with the model’s maker. Ask us for a quote. Read the licence ↗