What's new in Claude

Claude Sonnet 5 sessions no longer use the mid-conversation system role for harness reminders, reducing prompt noise in long-running sessions.

AskUserQuestion dialogs no longer auto-continue by default (opt in via /config); the default permission mode is renamed to "Manual"; and numerous background session reliability fixes land — crash recovery, rate-limit handling, and subagent output stability.

Stacked slash-skill invocations now load up to 5 leading skills. Also fixed: SSL certificate errors, streaming response discards, subagent rate-limiting, and background-agent daemon stability on Linux.

claude mcp login: authenticate a configured MCP server directly from your shell instead of the interactive /mcp menu; clear stored credentials with claude mcp logout.

Shell mode responds to command output: running ! npm test now gets an explanation without a second prompt.

/rewind can resume from before /clear: conversations can be picked back up from a point before the context was cleared.

Background subagent permission prompts now surface in the main session instead of auto-denying, so long-running background work no longer silently stalls.

Anthropic restored access to Claude Fable 5 and Claude Mythos 5 after updated classifiers were deployed. Note: Fable 5 is expected to come off subscriptions after July 7 due to capacity constraints — Anthropic will restore it as soon as capacity allows.

Claude Sonnet 5 (claude-sonnet-5) launched with 1M token context and 128k max output at introductory pricing of $2/$10 per MTok through August 31 ($3/$15 thereafter). Adaptive thinking is on by default; manual extended thinking is removed; new tokenizer produces ~30% more tokens.

Claude Managed Agents gains event deltas on session streams (preview agent text as it generates), backward pagination for session listing, per-session agent config overrides, vault injection location controls, and lifecycle webhooks for agent, deployment, and run events.

Fast mode removed from Claude Opus 4.6. Requests with speed: "fast" on Opus 4.6 now run at standard speed and billing with no error. Migrate to Opus 4.8 to continue using fast mode.

Claude Code weekly limits increased 50% through July 13 for all Pro, Max, Team, and Enterprise users. Also: Artifacts in Claude Code is now available on Pro and Max plans — Claude writes code, publishes it live to claude.ai, and updates it in real time as you work.

Announced "Built with Claude: Life Sciences" — a global virtual hackathon with a $100k prize pool in credits for building with Claude Science and Claude Code, in partnership with the Gladstone Institute. Registration open now.

"Artifacts in Claude Code have been life changing. Excited to expand to Pro and Max!" — Boris Cherny, creator of Claude Code, on the Artifacts expansion. He also shared that engineers love Claude Code's customizability: hooks, plugins, LSPs, MCPs, skills, custom agents, and status lines.

Thariq noted that Claude Fable 5 will come off subscriptions after July 7 due to capacity constraints, and that Anthropic aims to restore it as a standard part of subscriptions as soon as capacity allows. Also launched @ClaudeDevs as the official channel for all Claude Code updates.