Laguna S 2.1 vs Ling 3.0 Flash: two free models, one shot each, no iteration needed

Two free models, one prompt, one shot each with /design in Command Code. No cost to either - that's the point of this comparison.

The prompt

Create a complete single HTML file for a neon brick breaker game using Canvas. Neon cyberpunk aesthetic with glowing bricks, mouse or touch to move paddle, ball with trail effect, particle explosions on brick break, score, lives, start and game over screens. Make it visually striking with glow effects and smooth gameplay. Output only the full code.

What we found

A test between two free open-source models, Laguna S 2.1 and Ling 3.0 Flash, on the same brick-breaker prompt. The one-shot result normally takes 8-10 iterations for other models to reach - these two got there in one, for free.

The headline here isn't which of the two won - it's that both landed a working, one-shot build on a brief that's demanding enough to normally need multiple follow-up prompts. That matters because "free model" and "needs babysitting" are usually assumed to travel together. On this specific prompt, they didn't.

This same prompt and both of these models show up in this repo's own brick-breaker feature matrix as "not estimated" - free models with no per-token cost to compute a floor from. Worth reading together: one gives you the real-world "did it just work" impression from an actual run, the other gives you the line-by-line feature comparison against ten paid models on the same brief.

Try this yourself

Swap /model ling-3.0-flash to compare. Full command reference: commandcode.ai/docs/slash-commands/design. More one-shot comparisons: CommandCodeAI/slash-design-showcase.