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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.109

1 entries read diff v2.1.108 → v2.1.109 Markdown

This release redesigns the thinking progress indicator that appears while Claude is processing a response. The new indicator starts showing feedback much sooner (1 second vs 10 seconds), features an animated spinner with a "Thinking" heading, and cycles through a larger set of playful, whimsical status messages over a longer time window.

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Redesigned Thinking Progress Indicator#

What

The progress messages shown while Claude is thinking have been completely overhauled with a new visual design, faster initial feedback, and more personality.

Details
  • The indicator now appears after just 1 second of thinking, down from 10 seconds previously
  • Features a proper animated spinner with a "Thinking" heading, replacing the old dim pointer style
  • The message set expanded from 5 to 14 messages, covering up to 2 minutes 45 seconds of thinking time (previously capped at 2 minutes)
  • Messages have a more playful, lighthearted tone compared to the old apologetic style
  • The indicator is now rendered as a dedicated component within the message list area, rather than appended below the conversation

The new message progression:

| Time | Message | |------|---------| | 1s | "Hmm…" | | 6s | "This one needs a moment…" | | 12s | "Working through it…" | | 20s | "Untangling some thoughts…" | | 28s | "Weighing a few approaches…" | | 36s | "Consulting the rubber duck…" | | 48s | "Cross-referencing seventeen theories…" | | 60s | "Double-checking the double-checks…" | | 80s | "Almost there…" | | 108s | "Pacing in small circles…" | | 120s | "Reticulating splines…" | | 135s | "Hmm…?" | | 150s | "Staring thoughtfully into the middle distance…" | | 165s | "Still here, still at it…" |

Previously, only 5 messages were shown starting at 10 seconds, with text like "Thinking a bit longer… still working on it…" and "Taking the time to get this right… thanks for your patience…"

Evidence

Thinking hint component with animated spinner (search for "Consulting the rubber duck" or "Reticulating splines"). The component is passed via the new showThinkingHint prop and renders with a Thinking heading and animated spinner indicator.

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

Verbatim
Official · Anthropic

Anthropic’s official release notes

Published verbatim by Anthropic for v2.1.109. Text is unmodified from the upstream changelog. Everything else on this page came out of the bundle instead, which is why the two lists don't match.

  • Improved the extended-thinking indicator with a rotating progress hint
System prompt

The system prompt was not captured for this release, so this page cannot say whether it moved.