Everyone Is Sleeping on Composer 2.5

A hands-on comparison of Gemini 2.5 (referred to as 'Composer 2.5') versus GPT-5.5 for AI-assisted coding tasks using Cursor CLI. The author demonstrates fixing real UI bugs in a project called Mission Control, noting that Composer 2.5 is significantly cheaper (~$0.75-1 per task vs ~$7 for Opus 4.7) and fast, but requires more re-prompting (4 prompts vs 2 for GPT-5.5) and burns through its context window quickly. The conclusion is that Composer 2.5 is great for simple, isolated tasks and refactoring, while GPT-5.5 remains the preferred model for complex, multi-file features due to higher first-attempt accuracy.