alt Hacker NewsAsk HN: How to rewrite `Claude.md` and install the skill for Opus5 and Fable5
Anthropic has released the new Opus 5 and Fable 5 models. Many existing resources—such as `claude.md` files and custom skills—are no longer compatible with these new models. How should one rewrite or adjust `claude.md`, or develop skills better suited to these models?
Comments
gojkoa • today at 6:31 AM
where did you get the "are no longer compatible" part? we moved from opus 4 to opus 5 without changing anything and no specific conflicts. used fable for a while, also did not have to change anything. I read some advice on the anthropic website that opus 5 doesn't require as many examples as before, but this was a recommendation how to make things shorter, not a backwards compatibility issue.
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vasanthrb • today at 6:35 AM
[flagged]
These models don't take claude.md, Claude Code does, and claude.md still get fed to these models if you're using Claude Code.
That said, prompting on opus 5 needs new technique: https://platform.claude.com/docs/en/build-with-claude/prompt...