# 2026-10-26 — Faster, more accurate auto size (improvement · API)

> Auto size now picks an aspect ratio faster and more accurately, and fails less often.

When you omit `size` or send `size: "auto"`, Mynth reads your prompt and picks an
aspect ratio for the image. That choice now comes back faster, matches what the
prompt asks for more often, and keeps working when an upstream service has trouble.
Requests don't change.

Permalink: https://mynth.io/changelog/2026-10-26-faster-auto-size · Markdown: https://mynth.io/changelog/2026-10-26-faster-auto-size.md