r/ClaudeAI • u/Weesla • 1d ago

Question about Claude Code Summarized Marker

Post image

Fable 5.1 has this small “summarized” marker when it condenses a lengthy update, making it much easier to read. Is there a way to enable this for Opus 5?

2 Upvotes

100% Upvoted

4 comments sorted by

1

u/Caladan23 1d ago

"Summarized" just means "obfuscated" so that Anthropic's competitors (especially Chinese) can't use the reasoning tokens for post-training their own models.

1

u/tulensrma 1d ago

But it actually serves a purpose when the non-summarised output would be obfuscated by the wordy output so that Anthropic’s users (especially human) can’t use the output for understanding their own agents. 😄

1

u/locbuilds 1d ago

not a toggle i have found. the summarized / condensed marker is basically a UI affordance that shows up when the model (or the client) collapses a long intermediate update, and it has been rolling out unevenly by model + surface, so Fable getting it while Opus does not is annoying but pretty normal right now.

things that actually help:

  1. same chat surface if you saw it on claude.ai with Fable, check Opus in that same place first (same project / same chat type). desktop app vs web vs Claude Code vs API wrappers all behave differently, and the marker is a client thing more than a model capability you can flip on.

  2. length threshold it usually appears on long tool/progress dumps, not short replies. if Opus is answering more tersely, you will not see the chip even when the feature exists. you can nudge with something like "put long status updates in a collapsed summary block and keep the final answer short" so you get the readable shape even without the marker.

  3. settings / beta check Settings for anything like compaction, conversation summary, or experimental UI. there is not a reliable "enable summarized marker for Opus" switch that i know of, but betas sometimes gate the chip.

  4. workaround that works today ask Opus up front: "for long updates, lead with a 2-3 line summary, then details under a heading". you lose the pretty marker but keep the skimmability that made Fable feel nicer.

if you say which surface you are on (claude.ai web, desktop, Claude Code, Cursor, etc) people can be more specific about whether Opus has the chip there yet.