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AI D​A​M​N/Claude Code 2.0 Launches with VS Code Plugin and Checkpoints

Claude Code 2.0 Launches with VS Code Plugin and Checkpoints

Claude Code 2.0 Revolutionizes AI-Assisted Development

Amid growing competition in AI programming tools, Anthropic unveiled Claude Code 2.0 on September 29 alongside its new Claude Sonnet4.5 model. This major update transforms Claude from a code assistant into what the company calls a "programming partner" with enhanced autonomy and deeper IDE integration.

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Sonnet4.5: A Powerhouse for Coding Tasks

The new Sonnet4.5 model achieves a 61.4% score on the OSWorld benchmark - a 20 percentage point improvement over its predecessor. Key capabilities include:

  • Continuous operation for 30+ hours without context loss
  • Enhanced tool coordination (code execution, file creation, visualization)
  • Direct integration with Claude's chat interface
  • Maintained pricing at $3/$15 per million tokens (input/output)

The model particularly excels at building complex agent systems and solving real-world computer tasks involving reasoning and mathematics.

Terminal and IDE Innovations

The update delivers two major workflow improvements:

  1. Redesigned Terminal Interface: Features parallel processing and real-time feedback with reported 3x faster response times
  2. VS Code Extension: Currently in beta, this plugin offers:
    • Sidebar integration
    • Inline diffs
    • Graphical interaction tools
    • One-click revert functionality

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Checkpoint System Enhances Reliability

The introduction of checkpoints marks a significant advancement:

  • Automatic state saving during long tasks
  • Rollback capability without affecting manual edits
  • Complementary to version control systems like Git

The update also includes quality-of-life improvements like the "Tab to Think" shortcut for triggering deep reasoning and a new mascot named "Clawd" (a crab).

Expanded Developer Tools Ecosystem

Anthropic has upgraded several supporting components:

  • API Updates: Added context editing and memory tools
  • Claude Agent SDK: Now available for team customization
  • GitHub Copilot Integration: Sonnet4.5 available in public test
  • Browser Extension: Extended to Max subscribers

The company maintains these updates were developed under AI Safety Level 3 (ASL-3) protocols with enhanced defenses against prompt injection and hallucinations.

Key Points:

  1. Claude Code evolves into autonomous "programming partner" role
  2. Sonnet4.5 shows dramatic benchmark improvements
  3. New VS Code plugin brings AI directly into development environments
  4. Checkpoint system provides safety net for extended AI operations
  5. Ecosystem expands with API/SDK updates while maintaining safety standards