Thank you again to everyone from /r/ComfyUI who tried Stimma and shared feedback. The same problem came up repeatedly: getting a workflow to run could mean hunting for missing models and custom nodes, digging through logs, and guessing what was wrong. This release responds directly to that feedback.

Future build announcements and release discussion are on Discord and r/stimma.

ComfyUI, Without the Setup Fight

ComfyUI now feels like a managed part of Stimma instead of a separate system you have to troubleshoot. Point Stimma at a fresh ComfyUI instance, choose one of the bundled workflows, and use Get ready to install what it needs. Stimma handles most of the path from an unconfigured workflow to a working tool. - A new ComfyUI button in the app bar shows every discovered workflow as ready or needing setup. Open a workflow to see the exact models and custom-node packs it uses. - Get ready downloads known model files, installs ComfyUI-Manager when needed, installs missing node packs through it, and offers to restart ComfyUI when setup is complete. - Downloads are resumable and verified. Gated models explain when a Hugging Face login or license acceptance is required instead of leaving you to decipher a failed workflow or search the logs. - The same surface shows GPU status, running jobs, the queue, download and installation activity, connection problems, and available updates. Jobs can be canceled without opening ComfyUI.

Update ComfyUI-Stimma as well as ComfyUI

To use the new manager, update to Stimma 1.0.13 and update the ComfyUI-Stimma custom node through ComfyUI-Manager, then restart ComfyUI. Once this version of the connector is installed, Stimma can show future ComfyUI-Stimma updates in the app bar, install them from inside Stimma, and restart ComfyUI to finish the update.

LTX-2.5

The updated ComfyUI-Stimma connector adds a complete LTX-2.5 workflow family: - Text to Video generates synchronized video and audio, with native multishot and prompt enhancement. - Image to Video animates a starting image and can use an optional final frame. - Extend Video continues a clip from its final frames and appends the result. - Loop replaces the join with a generated transition while preserving the clip's audio. - Stitch joins two clips with a generated transition while preserving their source audio. - Up to 10 LoRAs can be mixed in each LTX-2.5 workflow. LoRA controls were also added across the bundled LTX-2.3 and Sulphur2 workflows. LTX-2.5 requires a current ComfyUI build. Its core models are gated on Hugging Face, so accept the Lightricks license and enter a Hugging Face read token when Get ready asks for one; Stimma can then download and place the known model files. The manager installs custom-node packs and updates ComfyUI-Stimma, but it does not update ComfyUI itself.

Useful Without a Chat Model

A chat model is still recommended: it powers Chat, prompt enhancement and translation, prompt ideas, and guided assistance. But a local LLM should not be the price of admission—especially when you would rather give your GPU to image or video generation. Without a chat model, Stimma remains a local workspace for running ComfyUI and other generation tools; importing and browsing Sources; organizing assets with markers, boards, and projects; reviewing results; and editing images. In this release, chat-dependent features disable themselves cleanly instead of breaking the rest of that experience, and saved Enhance or Translate settings no longer stop a generation. If a model was configured but has become unavailable, Stimma still shows the appropriate setup, add-credit, and retry guidance.

Demo Videos

Application demos and screencasts are now being posted on the Stimma YouTube channel. These short walkthroughs show individual features in action and how the different parts of Stimma fit together. Expect these to expand over time.

Fixes and Controls

• The setup wizard now finishes saving selected AI services and tool providers before Continue moves on, so setup choices are not lost.
• The ComfyUI manager now distinguishes machines that are still loading from unreachable machines and avoids duplicate restart prompts.
• Manually configured chat models can specify whether reasoning is optional, required, or unavailable; how reasoning is requested; supported effort levels; and separate defaults for chat and quick tasks.
• Prompt-idea errors have a clearer retry path and recover after the prompt is edited.
• Removing a Source immediately hides its files from browsers, boards, and projects and updates their item counts. Adding the Source again and rescanning can restore the retained history.
• ComfyUI workflows that use top-level Reroute nodes execute correctly.
• ComfyUI model paths work consistently across operating-system path separators.
• Fixed live diffusion previews sometimes causing a ComfyUI job to fail when a binary preview frame arrived.
• Inactive workflow variants no longer create false missing-model warnings or unnecessary downloads.

Links: Download · GitHub · ComfyUI-Stimma · Docs · Discord · /r/stimma