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Claude Code updates: When to use Haiku 4.5, Claude Code on web, and more.

We're covering everything new with Claude for developers, including the launch of Claude Code for the Web, Claude Haiku 4.5, and more. Join the Claude Developer Discord - https://anthropic.com/discord Try Claude Code on the Web - https://claude.ai/code 00:02 Claude Code on the Web 00:42 Claude Code on the Web demo 01:26 Claude Haiku 4.5 02:10 When to use Haiku 4.5 02:51 Claude Code on the Web follow-up 03:05 Claude Code on the Web teleport 04:44 Summary

Oct 30, 20255mWatch on YouTube ↗

CHAPTERS

  1. Claude Code on the web: browser- and mobile-first coding sessions

    Claude Code is now accessible from the web and the Claude mobile app, so you don’t need to open a terminal or IDE to delegate coding work. You connect GitHub, pick a repository, describe the task, and Claude executes it on Anthropic’s cloud infrastructure.

  2. Parallel cloud development across multiple repositories

    A core benefit of Claude Code on the web is running multiple tasks simultaneously, even across different repos. This is positioned as a way to chew through bug backlogs, routine fixes, or new feature ideas more efficiently.

  3. Web demo: adding registration input validation and strong password checks

    The presenter demonstrates a concrete task: adding input validation to a user registration endpoint, including strong password validation on both frontend and backend. The session kicks off from the web UI with a single prompt.

  4. How Claude executes: isolated sandbox with full Git access and live progress

    As the task runs, the video explains that Claude operates in an isolated sandbox environment with full Git access. Users can monitor the work as it progresses in real time.

  5. Model update: introducing Claude Haiku 4.5 after Sonnet 4.5

    The video pivots to model news: Sonnet 4.5 launched earlier as a top coding model, and Haiku 4.5 followed shortly after. Haiku 4.5 is framed as delivering similar coding capability with significantly better speed and cost.

  6. Haiku 4.5 performance and benchmarks snapshot

    The presenter highlights benchmark numbers to quantify Haiku 4.5’s coding ability and agentic performance. The framing emphasizes that Haiku retains most of Sonnet 4.5’s strength while being cheaper and faster.

  7. When to use Haiku 4.5: plan with Sonnet, implement with Haiku (multi-agent pattern)

    Guidance is given on practical model selection: use Sonnet 4.5 for high-level decomposition and planning, then Haiku 4.5 to implement the code. This approach is described as increasingly popular for large refactors and technical debt work.

  8. Haiku 4.5 availability and pricing

    Haiku 4.5 is presented as broadly available wherever Claude is accessed, with explicit token pricing. The message reinforces its value proposition for high-throughput coding tasks.

  9. Returning to the web task: review changes and summaries across backend + frontend

    The demo returns to the running job to inspect outcomes. Claude provides a summary of modifications, including changes in a backend Go service file and frontend TypeScript.

  10. “Open in CLI”: teleport from web session to local dev with context preserved

    A highlighted feature lets you continue the exact web session locally via an “Open in CLI” button. You paste a generated command into your terminal to bring the work into your local environment with history, context, and diffs intact.

  11. Structured follow-up questions for vague prompts (caching example)

    For broad requests like “add caching,” Claude Code responds with clarifying questions to gather requirements before implementation. The UI walks through choices such as caching level, goals, target area, and technology (e.g., Redis vs in-memory).

  12. Wrap-up: web-based Claude Code, Haiku 4.5 positioning, and availability for Pro/Max

    The video closes by summarizing the main updates: Claude Code on the web for parallel cloud development, Haiku 4.5 for fast/low-cost coding, and improved workflows via structured questions and local handoff. Access is emphasized for Pro and Max users.

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