This is a heavily interactive web application, and JavaScript is required. Simple HTML interfaces are possible, but that is not what this is.
Post
Tim Duffy
timfduffy.com
did:plc:mk7qlghvwdjjayu5x3bo3lx2
Fable 5.1 and Opus 5 now support changing the effort level without invalidating the cache, as least through the API https://platform.claude.com/docs/en/build-with-claude/effort#change-effort-mid-conversation-beta
2026-09-01T18:39:16.209Z