• Tech Dev NotesTech Dev Notes
Apps
  • App lookup
  • App compare
Market movement
  • App charts
  • App rankings
Visual proof
  • App screens
  • App listing screenshots
  • App icons
Stacks and releases
  • App tech stacks
  • Tool releases
  • Developers
More
  • X feature flags
  • Grokipedia
  • Blog
  • Follow on X
Skip to content

© 2026 Tech Dev Notes

RSSAboutAPIPrivacyTermsSitemap@techdevnotes
Claude Code

Anthropic · CLI

Claude Code 2.1.197

2.1.196→2.1.197·June 29, 2026 at 7:16 PM UTC

Patch release adding support for the new claude-sonnet-5 model as the default, along with related prompt and capability updates.

Changelog

  • [new] Added claude-sonnet-5 as a supported model.
  • [changed] Updated default model selection to claude-sonnet-5 in agent and onboarding flows.
  • [new] Added support for the computer-use-2025-11-24 API beta header.
  • [changed] Adjusted model-facing instructions for code review harnesses, design defaults, effort levels, and token budgeting to account for claude-sonnet-5 behavior and its tokenizer.

Models & prompts

The release introduces claude-sonnet-5 and updates numerous system prompts to reference it as the new default. Guidance now covers stricter effort level handling, visual style consistency on design tasks, and recommendations for leaving sufficient max_tokens headroom. Plan mode and focus mode messaging were also refreshed for clarity.

Under the hood

Two new environment variables were added under the CLAUDE_5 group (CLAUDE_5_SONNET and CLAUDE_BG_SESSION_PERMISSION_RULESL). A new backend route for deployment runs was introduced.

Upgrade notes

Existing max_tokens settings tuned for earlier Sonnet models may need to be increased when using claude-sonnet-5 on long-running tasks due to the new tokenizer.

content/

Browse captured content/

Same tree as claude-code/latest/content for this version. Open the full browser for sidebar navigation between docs and other files.

Open content/ browser →

8 listed · 8 in tree

content/ browserNavigate docs, prompts, and root filesFolder index plus per-file pages with prev/next and a full file sidebar.
README.mdDocs2 KBpackage.jsonMetadata1.4 KBmanifest.jsonMetadata1.4 KBversion.jsonMetadata172 Bcli-wrapper.cjsCJS4.8 KBinstall.cjsCJS7 KBsdk-tools.d.tsTS135.2 KBLICENSE.mdDocs147 B
Older release← 2.1.196
All Claude Code releases →