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title: Dynamic complexity cost for productSet mutation - Shopify developer changelog
description: Shopify’s developer changelog documents all changes to Shopify’s platform. Find the latest news and learn about new platform opportunities.
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[Back to Developer changelog](https://shopify.dev/changelog)

October 1, 2025

Tags:

* Admin GraphQL API
* 2025-10

# Dynamic complexity cost for `productSet` mutation

The [`productSet` mutation](https://shopify.dev/docs/api/admin-graphql/latest/mutations/productSet) mutation now uses dynamic complexity costing that more accurately reflects the actual computational cost of operations.

### What's changing

Instead of a fixed cost of 50 points for all `productSet` operations, the mutation now calculates complexity based on the actual work being performed:

* **Base cost**: 10 points
* **Per variant**: 0.2 points
* **Per variant file**: 0.6 points
* **Per variant metafield**: 0.4 points
* **Per product metafield**: 0.4 points
* **Per product file**: 1.9 points

The total complexity is calculated as:

```
10 +
  (variants × 0.2) +
	(variant_files × 0.6) +
	(variant_metafields × 0.4) 
	(product_metafields × 0.4) 
	(product_files × 1.9)
```

### Benefits for your apps

**Lower costs for most operations**: More than 99.5% of existing `productSet` operations will cost less than the previous fixed cost of 50 points. Simple product updates that previously cost 50 points now cost as little as 10-20 points.

**Support for larger products**: The mutation now supports products with up to 2,048 variants for merchants on all plans, a significant increase from the previous limit of 100 variants. This enables apps to manage more complex products and support merchants with diverse business needs.

### Examples

**Simple product update** (1 variant, no files or metafields):

* Previous cost: 50 points
* New cost: 10 points (80% reduction)

**Medium complexity** (20 variants, 5 product metafields):

* Previous cost: 50 points
* New cost: 16 points (68% reduction)

**Complex product** (200 variants, 10 files, 20 metafields):

* Previous cost: 50 points
* New cost: 77 points (reflects actual resource usage)

### Migration guidance

For most apps, no changes are required. Your existing `productSet` operations will automatically benefit from lower complexity costs.

For apps working with high-complexity products exceeding the 1000-point single query limit:

* Consider using [bulk mutations](https://shopify.dev/docs/api/usage/bulk-operations/imports) for very large operations
* Split complex operations into separate calls: use `productSet` for core product data, then use [`metafieldsSet`](https://shopify.dev/docs/api/admin-graphql/latest/mutations/metafieldsSet) and [`fileCreate`](https://shopify.dev/docs/api/admin-graphql/latest/mutations/fileCreate) for additional data