Sonnet 5

Sonnet 5

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Introduction
Anthropic's Claude Sonnet 5 browser extension lets you chat with the latest AI model directly in your browser.
Listed on
July 22, 2026
FreeBrowser ExtensionAI CopilotAI Browser ExtensionsGeneral AI Assistant

What is Sonnet 5?

Sonnet 5 is a Chrome extension that lets users chat with Anthropic's Claude Sonnet 5 model directly in the browser. Released on June 30, 2026, this model is the successor to Sonnet 4.6 and features agentic capabilities, enabling planning, reasoning, tool use, and coordination of subagents. The extension provides a clean chat interface with no setup or API key required.

How to use Sonnet 5?

  • 1. Install Sonnet 5 from the Chrome Web Store. 2. Click the icon in your browser toolbar to open the chat window. 3. Type your message. 4. Get an instant response from Claude Sonnet 5.

Core features of Sonnet 5

  • Instant chat with no setup or API key required
  • Ask questions, get explanations, brainstorm, and summarize
  • Write and rewrite emails, posts, code snippets, and more
  • Understand any page, explain, translate, or condense text
  • Supports 52 languages

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