Concurrent Submit | zhenzhen-midjourney-lowprice

This is the biggest node in the pack, and it's worth understanding what you're looking at. Comfly_midjourney_lowprice is a single node that speaks the entire Midjourney API - imagine, blend, describe, edits, upscale, variation, reroll, zoom, pan, inpaint, modal, video, and remix - through the cheap domestic (国内版) route. The author's changelog says they verified all 16 operations against the real API. This Concurrent Submit twin doesn't change any of that; it just lets you run a whole fleet of those operations in the 30-worker image pool and collect the results in one go.

Why this is a submit node

Midjourney operations are slow and interactive: you imagine, you upscale, you vary, you pan - each step a round trip. If you're doing that single-threaded in ComfyUI you'll fall asleep at the keyboard. The Submit twin returns a task handle immediately and runs the actual operation off the graph's critical path, so you can queue many operations and let the pool work them. It won't make Midjourney faster, but it makes you faster.

The inputs that matter

The full operation surface is here - the author's trick is that switching operation shows only the parameters that operation needs:

• operation - the switch: midjourney-imagine, blend, describe, the various edit modes, upscale, variation, reroll, zoom/pan, inpaint/modal, video, remix.
• prompt / negative_prompt - the core text inputs.
• image1–image4 + image_url1–4 - reference images for blend/edit/video; tooltips note a local image and a URL in the same slot shouldn't both be set.
• end_image - optional end frame for video operations.
• mask - a ComfyUI MASK for Modal local-region redraw (white areas get redrawn).
• task_id - needed for follow-on operations (upscale/variation/extend a previous result).
• dimensions / size / version / quality / stylize / chaos / weird / seed / repeat / hd - the usual Midjourney parameter alphabet. size is the aspect-ratio string (e.g. 16:9) and takes precedence over dimensions when set.
• api_config - domestic route, so wire the zhenzhen-seedance2-low-price-api-settings node rather than pasting a bare key.
• skip_error - fail silently vs throw.

The concurrent flow

Output is a task (COMFLY_IMAGE_FUTURE). Collect your jobs with ComflyConcurrent_Image_Await (30 slots), which returns images in slot order plus a status JSON. Typical setup: several Submit nodes, each doing a different operation or a different prompt, all feeding one collector.

Install and gotchas

Pack install as always - ComfyUI Manager → "Comfyui-zhenzhen", or git clone https://github.com/T8mars/Comfyui-zhenzhen into custom_nodes, restart. No local models. Paid token, overseas servers (proxy needed from China). Two Midjourney-specific gotchas: follow-on operations need the task_id of the previous result (keep them wired), and cost adds up fast across a wide operation chain - each step is a billable call.