v1.4.0

Generated from API version v2026-10-01, which also brings v2026-09-30.

Minor: the models gained the upscale settings and new model names. Nothing was removed or narrowed, so there is no upgrade step beyond installing it.

Added

• Upscale on the image element (v2026-09-30): upscale and upscale_properties on the asynchronous image element, modelled by UpscaleProperties (model: seedvr-upscale, topaz-precision, crystal-upscaler or bria-increase-resolution; upscale_factor: 1 to 4). Asynchronous generation only: the API refuses it on synchronous generation. Request bodies stay plain dicts, so this is documentation for what you send, not a new class to import.
• Three text-to-image and inpainting models (v2026-09-30): gpt-image-2.5-sunburst, gpt-image-2.5-flare and seedream-5-pro.
• design_in_open_product among the documented error ids.

Changed

• Colour fields document radial gradients (v2026-10-01). Every field that takes a linear gradient also takes radial-gradient(cx% cy% r%,<stops>): a centre and a radius as percentages of the layer's box, then the same 2 to 8 stops. A colour is a str either way, so only the field descriptions changed. See the API changelog.