Cheat Sheet: Start with Claude Fable 5, Switch to Opus 5 for Execution

alex_verem · x · 2026-08-22

A cheat sheet covering Claude models, prompts, and skills. Model selection: Haiku 4.5 for speed, Sonnet 5 for daily work, Opus 5 for hard thinking, and Fable 5 for initial framing.

Core Hack: Start with Fable 5 (High effort) to let Claude ask questions and create a plan, then switch to Opus 5 for execution. The first prompt is critical.

Key Prompt: "I need [task] for [goal]. Ask me questions first. Use AskUserQuestion. Then give me the plan."

Useful Skills:

Gotchas: Long chats degrade quality, costs rise with turns, and new tasks require fresh chats.

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