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The Combinator takes two sets of items and pairs them, so a generator can run across the combinations. It’s how you produce a grid—every product in every material, every model in every pose—in one workflow. Add it from the Utilities menu. It has two inputs (A and B) and two outputs (A and B); you connect your two sources in, choose a strategy, and connect its outputs to a generator.
A Combinator node with two inputs feeding a Generate Image node

A Combinator pairing two input sets before a generator

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Cartesian: every combination

Cartesian pairs every item in A with every item in B. Three products and four materials make twelve pairs—and twelve generations.
A Combinator set to Cartesian producing every product-and-material combination

Every product paired with every material

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Paired: one to one

Paired matches items by position: A1 with B1, A2 with B2, and so on. Use it when your two sets line up—five products with their five named colorways.
A Combinator set to Paired matching two sets one to one

Two sets matched one to one by position

Paired needs equal counts. If A has five items and B has three, Sprello shows an error and asks you to even them up or switch to Cartesian.

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When you don’t need a Combinator

If you want every item in one set to use the same fixed references, you don’t need a Combinator. Set the varying source to Each and the fixed one to All, and connect both straight to the generator. See mixing modes. Reach for the Combinator when both sides vary.

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Good to know

  • The 500-items-per-node cap applies to the combined total. Twenty by thirty is six hundred—over the limit—so Sprello blocks it and asks you to reduce a side.
  • The two sources must share a clear relationship. Two unrelated iterating branches can’t be combined, because there’s no consistent way to line their items up; Sprello flags this when it happens.

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Next

Generating and reviewing results

Run your workflow and review everything it produced.