The Tool now exposes two methods the LLM picks between based on whether
the user attached an image:
generate_image — txt2img (existing, unchanged behavior)
edit_image — img2img on the most recently attached image
edit_image extracts the source image from __messages__ (base64 data
URIs in image_url content blocks) or __files__ (local path or URL),
uploads to ComfyUI's /upload/image, runs an img2img workflow at the
caller-specified denoise (default 0.7), and returns the edited result.
Same per-style routing / sampler / CFG / prefix logic as generation.
Refactored the submit-and-poll loop into _submit_and_fetch shared by
both methods. Image extraction is defensive — tries messages first,
then files (path then URL), returns a clear "no image attached"
message rather than silently generating from scratch.
Image Studio system prompt rewritten to teach the LLM when to call
edit_image vs generate_image and how to pick denoise.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
A documented Open WebUI custom-model preset wrapping mistral-nemo:12b
with: aggressive system prompt that mandates calling generate_image,
only the smart_image_gen tool attached, native function calling,
lower temperature for tool-call reliability. Users pick "Image Studio"
from the chat-model dropdown when they want images.
Solves the common case where general-purpose chat models describe an
image in text instead of firing the tool — usually on conversational
phrasings like "can you draw me…". The preset removes the ambiguity
by giving the LLM exactly one job and one tool.
Setup walkthrough in openwebui-models/image_studio.md; deployment
README §9 points users at it as the recommended path.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
57_WolveandClaude Opus 4.7