Claude Code 2.1.224 removes the old 200-subagent cap, enabling truly parallel workflows.

Scored 78.9% on Terminal-Bench 2.1 and 88.6% on SWE-bench Verified with Opus 4.6

Released version 2.1.221 with credential masking, VSCode Focus view, and 20 security fixes

Claude Code shifts to a policy-controlled execution layer with deterministic security workflows

Shift to a policy-controlled execution layer in the harness, enforcing deterministic security workflows

Open-source plugin 'dont-let-me' released for Claude Code, Codex, and OpenCode

Critical vulnerability discovered in Linux kernel TIPC module that had been present since 2001

Established first formal policy governing AI-assisted code contributions, mandating disclosure and human liability.