Queuely
A social media scheduler (Postiz clone): connect your accounts, write a post once, tailor it per network and drop it onto a calendar.
Watch the video: Claude Opus 5.5 vs GPT-6 Astra: Which Builds Better Apps?
What it is
Claude Opus 5.5 vs GPT-6 Astra built the same social media scheduler from one prompt. Build times, test counts, bugs found and the final 40-37 score.
Built with Claude Code.
How it's built, step by step
- GPT-6 Astra vs Claude Opus 5.5: what each company claims - OpenAI launched GPT-6 Astra on September 3 as its flagship. The announcement calls it "the world's most intelligent and aligned model", and the coding section says it's the best model for software engineering to date.
- Price and benchmarks: is Astra worth 2.5x more? - The pricing is easy to compare.
- The test app: Queuely, a clone of Postiz - The target was Postiz, an open-source social media scheduler. You write a post once and it publishes across all your social accounts automatically.
- How to set up a fair Claude Code vs Codex test - Make one parent folder with two empty folders inside it: Queuely Astra and Queuely Opus. Each model runs in its own company's official coding agent.
- First build results: speed vs thoroughness - The two models worked very differently from the start.
- Redesigning AI-built apps with the Mobbin MCP - AI-built interfaces often look generic. Code models know which components exist, but not how the best real products arrange them. The fix is to give the model real references instead of telling it to "make it look better".
- The QA audit prompt: making each model test its own app - In a scheduler, one bug is embarrassing in public: a post that goes out an hour early, a thread in the wrong order, a post that never goes out. Your users' followers see it, and your users cancel.
- Taking both apps to launch: Supabase, Bluesky and Stripe - At this point everything lives in one browser. There are no real accounts, no real publishing and no payments.
- Final scores: which model should you build with? - Each model was scored out of 10 on five criteria.
All 2 prompts used to build this are inside the community.
Get the template free with any Lovable plan.