Claude Code v2.1.278 → v2.1.325: what changed

40 releases shipped between v2.1.278 (September 19, 2026) and v2.1.325 (November 13, 2026).

Changelog entries in this range

• v2.1.280 — September 22, 2026: Claude Code 2.1.280 brings Claude Opus 5.5 as your new default model with a massive 1M context window and faster processing, plus improved mouse controls in ful
• v2.1.281 — September 23, 2026: Claude Code 2.1.281 brings improved desktop security controls and cross-account AWS access, making it easier to manage permissions and work across different AWS
• v2.1.282 — September 24, 2026: Claude Code 2.1.282 makes reading easier with smarter text formatting in wide terminals, while giving you better visibility into what telemetry settings your pr
• v2.1.283 — September 25, 2026: Claude Code 2.1.283 makes it easier to manage which AI models your team can use, with new controls to lock in specific versions and block others—keeping you in
• v2.1.284 — September 28, 2026: Claude Code 2.1.284 now uses the faster Claude Sonnet 5.5 model by default, giving you improved performance with a massive 1M context window. We've also made pe
• v2.1.285 — September 29, 2026: Claude Code 2.1.285 makes it easier to launch the desktop app directly from your terminal and gives you more control over plugin configuration right at install
• v2.1.286 — September 30, 2026: Claude Code 2.1.286 makes permission requests clearer when multiple stack up, and fixes critical issues where login credentials weren't properly refreshing acro
• v2.1.287 — October 1, 2026: Claude Code 2.1.287 now lets plugins modify deeper behavior with Claude Mods, and introduces an opt-in "You Should Know" agent that watches your back to catch t
• v2.1.288 — October 2, 2026: Claude Code 2.1.288 makes it easier to recover lost work with one keystroke and gives you more control over code review findings, plus fixes that prevent conver
• v2.1.289 — October 3, 2026: Claude Code 2.1.289 improves security by ensuring permission rules properly apply across complex commands and user mods on managed machines. We've also enhanced
• v2.1.290 — October 5, 2026: Claude Code 2.1.290 now gives you deeper visibility into your tools with serverToolUses tracking what the API itself calls, plus smarter permission controls tha
• v2.1.291 — October 6, 2026: Claude Code 2.1.291 restores reliability by fixing critical issues where chat messages could disappear and permission prompts were being ignored. These fixes en
• v2.1.292 — October 6, 2026: Claude Code 2.1.292 now lets you install plugins directly from marketplaces and control how hard sub-agents work on your tasks. We've also improved performance,
• v2.1.293 — October 7, 2026: Claude Code 2.1.293 now defaults to the faster, more affordable Claude Haiku 5.5 model with 1M context window, giving you better performance at lower costs. We'
• v2.1.294 — October 8, 2026: Claude Code 2.1.294 strengthens your safety controls by fixing how instruction-based hooks are interpreted, so blocking rules actually work as intended. We've a
• v2.1.295 — October 8, 2026: Claude Code 2.1.295 gives you better control with hooks that can now block actions when they fail, and improves visibility with terminal status updates showing
• v2.1.296 — October 9, 2026: Claude Code 2.1.296 now syncs code settings across Claude Desktop and the gateway for more consistent behavior, while new controls let you manage window compact
• v2.1.299 — October 14, 2026: Claude Code 2.1.299 brings smarter memory management with idle compaction, so long conversations stay efficient without reprocessing, and gives you finer contro
• v2.1.300 — October 14, 2026: Claude Code 2.1.300 brings smarter prompt handling with virtual text that won't interfere with your submissions, plus new ways to customize agent views and cont
• v2.1.301 — October 15, 2026: Claude Code 2.1.301 now handles unattended retries more intelligently, automatically stopping requests when hitting usage limits instead of waiting indefinitely
• v2.1.302 — October 16, 2026: Claude Code 2.1.302 now gives you more control over how auto mode works on your device, plus we've squashed several bugs that were causing frustrating errors du
• v2.1.303 — October 18, 2026: - Bug fixes and reliability improvements
• v2.1.304 — October 19, 2026: Claude Code 2.1.304 now gives you better visibility into plugin interactions and adds intelligent setup guidance that learns from your project to optimize auto
• v2.1.305 — October 20, 2026: Claude Code 2.1.305 now handles tool compatibility issues across different AI providers, so your commands won't fail when using Vertex, Bedrock, or other servic
• v2.1.306 — October 21, 2026: Claude Code 2.1.306 is here: cloud sessions no longer falsely report "Not logged in" for claude -p, and big MCP tool setups stop getting misleading "prompt is t
• v2.1.307 — October 21, 2026: Claude Code 2.1.307 is out: a new safety telemetry event for every stopped or prompted tool call, MCP reconnect fixes after sleep and keychain locks, and checko
• v2.1.308 — October 22, 2026: Claude Code 2.1.303 is out with bug fixes and reliability improvements. The notes don't break down the specifics, so the details are still a mystery. Curious wh
• v2.1.309 — October 22, 2026: Claude Code 2.1.309 is out: tighter sandbox and permission checks, fixes for hooks and PowerShell on Windows, and ultrareview now asks for workspace trust. Curi
• v2.1.310 — October 23, 2026: Claude Code 2.1.310 brings the Monitor tool to Bedrock, Vertex, and Foundry, fixes gateway failures and stubborn compaction, and lets Enterprise Owners set clou
• v2.1.311 — October 26, 2026: Claude Code 2.1.311 is out: new idle-hold options for self-hosted runners, plus fixes for startup freezes, stalled interrupts, and sessions that stopped past 20
• v2.1.312 — October 27, 2026: Claude Code 2.1.312 is out: custom OIDC user ID claims, safer large-file edits, a shorter prompt for custom model names, and a pile of fixes. Curious what else
• v2.1.314 — October 30, 2026: Claude Code 2.1.314 is here: lock writes to your working directories, route gateway traffic by IdP group, and let long idle chats compact themselves. Plus a lon
• v2.1.316 — October 31, 2026: Claude Code 2.1.316 is here: pooled group budgets, a new subagent effort setting, and a fix for shell commands left running after exit. Opus 4.8 fast mode is re
• v2.1.317 — November 2, 2026: Claude Code 2.1.317 is out: new cost reports for gateway admins, safer Agent SDK hooks that can block on failure, and a long list of fixes. Curious what else ch
• v2.1.318 — November 3, 2026: Claude Code 2.1.318 is here: earlier warnings before your claude.ai sign-in expires, quieter config writes, and a long list of fixes for sessions, MCP servers a
• v2.1.319 — November 6, 2026: Claude Code 2.1.319 is out: MCP tasks now run in the background, auto mode behaves differently behind gateways, and a new setting can deny prompts instead of wa
• v2.1.321 — November 9, 2026: Claude Code 2.1.321 is here: Fable 5.2 is now the default, remote-control takes a settings file, and a batch of permission and security gaps got patched. Curiou
• v2.1.322 — November 10, 2026: Claude Code 2.1.322 brings fast mode to Vertex in global, us, and eu regions. If Vertex declines it, you automatically drop back to standard speed. Curious how
• v2.1.323 — November 12, 2026: Claude Code 2.1.323 is here with experimental Code Mode, where Claude writes JavaScript to call its tools. Plugins now honor version ranges, and validate catche
• v2.1.325 — November 13, 2026: Claude Code 2.1.325 is here: a security fix for zstd decoding, smarter subagent model handling, compaction that finally works on third-party gateways, and a lon

All Claude Code releases · v2.1.278 release · v2.1.325 release