The user wants the built-in image generation feature in Codex App to support explicit and deterministic output dimensions for GPT-image-2 workflows, similar to what's available in ChatGPT web.
### What variant of Codex are you using? Codex App on macOS (`26.417.41555 (1858)`), Pro ### What feature would you like to see? I need the built-in `image_gen` / `image_generation` path in Codex App to support explicit, deterministic output dimensions for GPT Image workflows. In ChatGPT web I can generate high-quality GPT-image-2 images and edit/iterate them while choosing specific output dimensions. In macOS Codex App, that does not appear to be available in the built-in path. In practice, this makes my workflow impossible, because I need exact dimensions on both the initial generation and subsequent edits. From the public Codex repo, the current built-in tool surface still appears to expose only: ```json { "type": "image_generation", "output_format": "png" } ``` Relevant file: - `codex-rs/tools/src/tool_spec.rs` By contrast, the CLI fallback now defaults to `gpt-image-2` and already supports arbitrary valid `WIDTHxHEIGHT` sizes, with validation rules for: - max edge `<= 3840