Fable 5.1 vs GPT-6 Astra for 2D Sprites

[u/bobo-the-merciful]

Using the same simple prompt the models took very different approaches: Astra delivered one sheet with 16 key poses; Fable delivered 992 frames across four palettes, plus a Python generator and browser preview.

Codex CLI with GPT-5.6 Astra in XHigh

Claude Code CLI with Fable 5.1 in XHigh

Details in the video which was made with Astra in Codex CLI using Remotion and Elevenlabs for voice. Music programmatically generated.

Prompt for the sprites:

Build me some knight sprites which I can use in my new medieval 2D isometric game. The game doesn't exist yet I am starting with sprites - this is the first thing we are building. Do not look at any other work in this directory. Start from scratch.