Week 27 · June 29 – July 3, 2026
Claude Sonnet 5 becomes the default model, Claude in Chrome reaches general availability, subagents run in the background by default, Claude Desktop arrives on Linux in beta, and /radio tunes into Claude FM.
Releases v2.1.195 → v2.1.201 5 features · June 29 – July 3
Claude Sonnet 5 new model
Sonnet 5 is the new default model for Pro, Team Standard, and Enterprise subscription seats: top-tier coding and tool use at Sonnet pricing, with a native 1M-token context window and adaptive thinking on by default. API pricing is promotional at $2/$10 per MTok through August 31. Requires v2.1.197 or later.
Switch to Sonnet 5 by name, or pick it from the model picker:
> /model claude-sonnet-5
Claude in Chrome is generally available v2.1.198
The Chrome integration is out of preview for everyone on a direct Anthropic plan. Claude Code drives your browser through the Claude in Chrome extension: it opens tabs, clicks through pages, fills forms, reads console logs, and shares your login state, so it can test the app it builds without you switching contexts.
Subagents run in the background by default v2.1.198
Claude now keeps working while subagents run and picks up their results when they finish, instead of pausing the conversation to wait. Claude still runs a subagent in the foreground when it needs the result before continuing, and background subagents surface every permission prompt in your main session. Pin a subagent's behavior with the background frontmatter field.
Run subagents in foreground or background
Claude Desktop on Linux Desktop
The Claude desktop app is now available on Ubuntu 22.04+ and Debian 12+ in beta, on x86_64 and arm64. You get the same Chat, Cowork, and Claude Code experience as macOS and Windows: parallel sessions, visual diff review, an integrated terminal and editor, and live app preview. Installs from Anthropic's apt repository, so updates arrive through regular package updates.
/radio CLI
Claude FM is on the air. /radio opens the lo-fi radio stream in your browser for something to code to, and prints the stream URL when no browser is available. Not available on Amazon Bedrock, Google Cloud's Agent Platform, or Microsoft Foundry.
Tune in from any session:
> /radio
Other wins
Artifacts are now generally available and included on Pro and Max plans, joining Team and EnterpriseAdmins can set an organization default model in the org console; it shows as "Org default" in /model when you haven't picked a model yourselfStacked skill invocations like /skill-a /skill-b do XYZ now load all leading skills (up to 5), not only the firstAskUserQuestion dialogs no longer auto-continue by default; opt into an idle timeout via /configThe "default" permission mode is now named "Manual" across the CLI, --help, VS Code, and JetBrains; --permission-mode manual is accepted alongside defaultNew /dataviz skill gives chart and dashboard design guidance, with a runnable color-palette validatorThe built-in Explore agent now inherits the main session's model (capped at Opus) instead of running on HaikuBackground agents launched from claude agents now commit, push, and open a draft PR when they finish code work in a worktree, instead of stopping to askHook matchers with hyphenated identifiers like code-reviewer now exact-match instead of substring-matching; use mcp__brave-search__.* to match all tools from a hyphenated MCP serverTransient server rate-limit errors unrelated to your usage limit are now retried automatically with backoff for subscribers instead of failing the turnThe streaming idle watchdog is now on by default for all providers: it aborts and retries when a response stream produces no events for 5 minutes (CLAUDE_ENABLE_STREAM_WATCHDOG=0 to disable)