The "think" tool from Claude
Enabling Claude to stop and think
The "think" tool from Claude launched on March 23, 2025 with 601 votes, #28 of 7,215 launches that month and more than 99% of that year's launches. The site was still online in September 2026, 1 year on.
In plain words
The "think" tool from Claude is an artificial intelligence feature that allows Claude to include a separate thinking step before providing final answers. This designated thinking space enables the AI to pause and work through problems more thoroughly before responding. The tool is designed for users who want more deliberate reasoning from Claude across various tasks.
written from the facts on this page · September 2026
From the sources
With the "think" tool, we're giving Claude the ability to include an additional thinking step—complete with its own designated space—as part of getting to its final answer.
A blog post for developers, describing a new method for complex tool-use situations
Extended thinking capabilities have improved since its initial release, such that we recommend using that feature instead of a dedicated think tool in most cases. Extended thinking provides similar benefits—giving Claude space to reason through complex problems—with better integration and performance. See our extended thinking documentation for implementation details. As we continue to enhance Claude's complex problem-solving abilities, we've discovered a particularly effective approach: a "think" tool that creates dedicated space for structured thinking during complex tasks. This simple yet powerful technique—which, as we’ll explain below, is different from Claude’s new “ extended thinking…from anthropic.com
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