feat(blog): add Claude 4 interleaved thinking blog post

[Unshure]

Summary

Adds a new blog post covering Claude 4's interleaved thinking beta feature and how to use it with Strands Agents SDK.

Why

This blog post introduces developers to a powerful new capability that enhances the model-driven approach in Strands. Interleaved thinking allows Claude 4 to reflect after tool calls and adjust plans dynamically, resulting in faster reasoning, reduced tool calls, and better error handling.

Changes

• New authors: Added 3 authors to authors.yaml (jawhny-cooke, mark-roy, vadim-omeltchenko)
• New blog post: interleaved-thinking-claude-4.mdx covering:
  • Strands event loop explanation
  • How to enable interleaved thinking via Amazon Bedrock
  • Benefits and use cases
  • Links to additional samples
• New image: Reasoning content visualization screenshot

Testing

• Format check passes for new files
• Build requires Node.js >=22.12.0 (CI environment has v20.20.1)

Resolves #735

[github-actions]

Documentation Preview Ready

Your documentation preview has been successfully deployed!

Preview URL: https://d3ehv1nix5p99z.cloudfront.net/pr-cms-737/docs/user-guide/quickstart/overview/

Updated at: 2026-04-07T22:38:09.723Z

[github-actions]

Documentation Preview Failed

The documentation deployment encountered an error. Please check the deployment logs for more details.

[Unshure]

/strands can you fix this build issue? 21:05:00 [build] ✓ Completed in 115.22s.
21:05:00 [@astrojs/sitemap] sitemap-index.xml created at dist
21:05:00 [starlight:pagefind] Building search index with Pagefind...
21:05:03 [build] Waiting for integration "@astrojs/starlight", hook "astro:build:done"...
21:05:04 [starlight:pagefind] Found 456 HTML files.
21:05:05 [starlight:pagefind] Finished building search index in 4.28s.
21:05:05 [astro-broken-links-checker] Checking 456 html pages for broken links
21:05:07 [astro-broken-links-checker] Broken links have been logged to broken-links.log
21:05:07 [ERROR] [astro-broken-links-checker] An unhandled error occurred while running the "astro:build:done" hook
21:05:07 [astro-broken-links-checker] Broken link: /pr-cms-737/docs/user-guide/concepts/tools/tools_overview/#3-example-built-in-tools
Found in:
- /blog/interleaved-thinking-claude-4/
21:05:07 [astro-broken-links-checker] Time to check links: 2735 ms
Broken links detected. Check the log file: broken-links.log
Location:
/home/runner/work/docs/docs/node_modules/astro/dist/integrations/hooks.js:33:12
Stack trace:
at astro:build:done (/home/runner/work/docs/docs/scripts/astro-broken-links-checker-index.js:82:17)
at async runHookInternal (file:///home/runner/work/docs/docs/node_modules/astro/dist/integrations/hooks.js:52:5)
at async AstroBuilder.build (file:///home/runner/work/docs/docs/node_modules/astro/dist/core/build/index.js:168:5)
at async build (file:///home/runner/work/docs/docs/node_modules/astro/dist/core/build/index.js:48:3)
at async runCommand (file:///home/runner/work/docs/docs/node_modules/astro/dist/cli/index.js:206:7)

[github-actions]

The broken link issue was already fixed in commit 66af5e6 — the link was changed from the non-existent tools_overview/#3-example-built-in-tools to the correct community-tools-package/ path. The "Documentation Preview Ready" deployment on 2026-04-06 confirms the build now passes successfully.

I've also verified all remaining internal links, authors, and the image are correct.

[Unshure]

/strands The link to https://github.com/strands-agents/samples/blob/main/01-tutorials/02-multi-agent-systems/01-agent-as-tool/agents-as-tools-interleaved.ipynb does not exist anymore. I believe it was placed under the python directory in that repo. Can you update the link?

[github-actions]

Updated the broken link to the interleaved thinking notebook. The strands-agents/samples repo was restructured — the correct path is now python/01-learn/10-agents-as-tools/agents-as-tools-interleaved.ipynb.

[github-actions]

Assessment: Comment

This is a well-written blog post that clearly explains Claude 4's interleaved thinking feature and how it integrates with Strands' model-driven approach. The content is technically sound, the code examples are practical, and the prior build/link issues have already been resolved.

Review Details

• Content Quality: The blog effectively uses the ISS example to demonstrate both standard and interleaved thinking workflows. The comparison between ReAct and interleaved thinking is a helpful framing for readers.
• Repetitive Text: There's a duplicated paragraph around lines 49-51 that restates the model's plan for tool usage — see inline comment.
• Code Style: Minor PEP 8 formatting inconsistency in a code example (prompt= missing space).
• Structure & Metadata: Frontmatter, author entries, image, canonical URL, and external links all look correct and consistent with existing blog posts.

No documentation PR is needed since this is the docs repo itself. No API changes involved.