Random Text Index Switch

The classic ComfyUI prompt-rotation recipe is two nodes: a Random/Select INT to make an index, then a Text Index Switch to pick the matching text. Random Text Index Switch fuses those into one node - it generates the index and does the selection, with up to 20 text inputs, in a single place. Fewer nodes, fewer wires, fewer chances to mismatch your range against your socket count. It's the "one node instead of two" upgrade, and it's a genuine QoL win.

How it works

It has the same three modes as Random/Select INT - Select (fixed select value), Increment (cycle minimum→maximum), and Random (random within the range) - but instead of just outputting an index, it uses that index to pick one of the text1…text20 inputs and outputs the text. Three outputs: text (the picked string), label (a label for it), and index (the active index, in case something downstream needs to stay in sync).

The inputs worth knowing:

• minimum / maximum - the selection range. Set these to your actual number of filled text slots, not 20, or you'll roll empty sockets.
• mode - Select/Increment/Random.
• select - the fixed index for Select mode.
• visible_inputs (2–20) - how many text sockets render on the node. Drop it to keep the node tidy when you only use five of twenty.

Why you'd use it over the two-node combo

• One place to configure. The range that controls the index and the number of text sockets you configured are right next to each other, so the classic "range doesn't match socket count" bug is much harder to hit.
• The label output. The two-node pattern doesn't give you a label; this does. Wire label into a display node or use it for filenames via an AUN filename builder - knowing which prompt won without reading the whole text is genuinely handy.
• Cleaner canvas. One node instead of two is the entire ethos of the AUN pack.

Honest trade-off: if you need the same index to drive a text switch and a LoRA loader or a controller, the two-node pattern lets you split one index to multiple places. Here you'd take the index output and wire it onward - same effect, just remember the range you set is what the node uses, so keep it consistent.

Install

Part of AUN ComfyUI Nodes (loz2754):

cd ComfyUI/custom_nodes
git clone https://github.com/loz2754/AUN-ComfyUI-Nodes

or ComfyUI Manager → search "AUN ComfyUI Nodes" → install → restart. Pack deps (piexif, opencv-python-headless, imageio-ffmpeg, requests) install via Manager; no model files, no keys.

If your rotation needs Range-list mode (like 1,2,5-8), note this node is Select/Increment/Random only - pair AUN Random/Select INT with the pack's AUN Text Index Switch for that. For the everyday "randomize my prompts" job, this is the one.