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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 v1.0.83

2 entries read diff v1.0.82 → v1.0.83 Markdown

Advanced beta features including interleaved thinking and 1M token context windows are now available for users of the Anthropic API and Google Vertex AI. AWS Bedrock users maintain the previous feature set for compatibility.

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Changesopen

Extended Beta Features for First-Party and Vertex API Users#

What: Users connecting through Anthropic's API or Google Vertex AI now have access to previously restricted beta features How to use:

# For Anthropic API (default - no special configuration needed)
claude "Analyze this 800,000 token codebase"

# For Google Vertex AI
export CLAUDE_CODE_USE_VERTEX=true
claude "Use interleaved thinking to solve this complex problem"

Details:

  • Enables "interleaved-thinking-2025-05-14" beta feature for enhanced reasoning capabilities
  • Enables "context-1m-2025-08-07" beta feature supporting up to 1 million token context windows
  • These features are automatically included in API requests when not using AWS Bedrock
  • No additional flags or configuration needed - features activate automatically based on your backend

Related

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

Smart Beta Feature Detection Based on Backend#

What changed: The CLI now intelligently enables or disables beta features based on your chosen backend provider Impact: First-party API and Vertex users get access to cutting-edge features while AWS Bedrock maintains compatibility by excluding features that aren't supported on that platform

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Bug Fixesopen

#

No bug fixes in this release.

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 v1.0.83. 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.

  • @-mention: Support files with spaces in path
  • New shimmering spinner
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