When one coding model gets stuck, switch to another

Melvin Vivas · X post · 2026-03-03 · Open on X

Topics: AI Dev Tools & Productivity · Level: beginner

Summary

The creator says that when Claude Opus 4.6 gets stuck on a coding task, it stays stuck. He gets the work moving again by switching to OpenAI's Codex 5.3. The practical lesson is to keep a second coding model ready to break out of dead ends.

Key points

• Claude Opus 4.6 can get stuck in a loop on some coding problems and not recover.
• Switching to a different model (Codex 5.3) can get the task moving again.
• Keeping more than one AI coding assistant available makes you less dependent on one vendor's quirks and outages.

Resources mentioned

• Claude Opus 4.6 · tool · anthropic.com · paid
  Anthropic's Claude Opus model, version 4.6, which Claude Code was running in this comparison.
  Also in: GLM-5.1 vs Claude Code (Opus 4.6): One-Shot Three.js Racing Game Eval (Melvin Vivas on X · notes), GLM-5.1 Reportedly Beats Claude Opus 4.6 on Cybersecurity (Melvin Vivas on X · notes), MiniMax 2.7 One-Shots a Linear Clone at 95% Lower Cost (Melvin Vivas on X · notes), Codex 5.3 vs Claude Opus 4.6 Side by Side in Cursor (Melvin Vivas on X · notes)
• OpenAI Codex · tool · openai.com · paid
  OpenAI's coding agent. In the diagram it writes code, fixes review findings and drives the build loop. The creator also used it to make this video.
  Also in: An agent bot that installs and drives Codex on its own (Melvin Vivas on X · notes), Asking a Coder bot to install Codex (Melvin Vivas on X · notes), Sign in with ChatGPT: Setting Usage Limits for Each App (Melvin Vivas on X · notes), Codex Cloud Environments Must Be Saved & Published Before Use (Melvin Vivas on X · notes) and 240 more

Try this

• When your main coding model keeps looping on a problem, hand the task to a different model instead of re-prompting the same one.