Claude Code 2.1.301

October 15, 2026

This release introduces new interaction features, including Vim mode's '%' motion for jumping between matching brackets and multi-line text input fields for terminal-based mods. Users also benefit from improved handling when switching to models with smaller context windows, which now summarize conversations using the previous model to prevent unexpected usage. Numerous fixes enhance reliability and performance across the board, addressing issues like worktree removal, authentication timeouts, file reading for binary types, and stray characters in terminal prompts. Significant performance boosts for VS Code chat panels are also included.

Added

Added `CLAUDE_CODE_RETRY_WATCHDOG_MAX_USAGE_LIMIT_WAIT_MS` so unattended retry mode (`CLAUDE_CODE_RETRY_WATCHDOG`) ends a request at a usage limit that resets too far away instead of waiting
Added OpenTelemetry tracing guidance to the `claude-api` skill, including setting up trace destinations with the `ant` CLI
Added the `%` motion to vim mode: jump to the matching bracket, alone or with d/c/y
Added `rows` to a mod's `Input`: a text field of several lines in the terminal, where Enter submits and Shift+Enter or a backslash before Enter starts a new line
Added `classifier_verdict` and `permission_mode` to OpenTelemetry `tool_decision` events, so auto mode classifier decisions can be told apart from permission rules
Added `classifier_category` to OpenTelemetry `tool_decision` events, naming the built-in rule a classifier block matched, when `OTEL_LOG_TOOL_DETAILS=1`
Added LaTeX math rendering in Claude's responses, including `$$` and multi-line `\[ … \]` blocks and inline `$…$` and `$…$` math
Added a "Get more usage" link to the usage-limit banner for Pro and Max plans in the VS Code and JetBrains panels

Improved

Improved switching to a model with a smaller context window: a conversation too long for the new model is now summarized by the previous model first
Improved rendering performance while a long-running subagent works: its progress trail now updates incrementally instead of being reprocessed in full on every render
Improved artifacts: pages Claude writes now paint the band above a sticky header, so scrolled text no longer shows there in the mobile apps
Improved mods: in VS Code and the desktop and mobile apps, a tree drawn above the question dialog can now hold Markdown and up to 48 rows; the terminal keeps 12 plain rows

Changed

Changed a mod hook's `.catch` handler to run only when the hook throws or times out; events raised beneath the hook's own calls now skip that hook without asking its `.catch`
Changed a mod's `$.env.set` to resolve with `{}` once the variable is set or unset, or with `{ deny }` saying why when the write is not made

Fixed

Fixed quitting removing a worktree made by a `WorktreeCreate` hook without asking when it may hold unpushed commits
Fixed the `fable` (and `best`) model alias erroring on the Anthropic API when the newest Fable model is not available to your organization: Claude Code now retries once on the previous Fable model
Fixed a misleading "Please run /login" error when a full disk keeps the login from being refreshed; the error now names the disk and says to delete files
Fixed Grep and Glob reporting no matches when the search program failed unexpectedly before returning any results; they now return an error saying the search failed
Fixed workflow agents sometimes skipping their step, and the run still reporting success, after reading the harness note that their task text carries no user authority
Fixed artifact updates being refused where a PreToolUse hook covers Edit or Write; Claude now edits the file and then republishes instead of changing it in the publish call
Fixed skills and commands with very many or very long argument names stalling for seconds when invoked; only the first 64 names, each up to 64 characters, are now filled in
Fixed skills, commands and hooks using very large amounts of memory when their arguments fill many placeholders
Fixed stray characters such as `>0q` covering the folder trust prompt, and `>4m` before the shell prompt at exit, in terminals built on VTE older than 0.53 such as MATE Terminal on RHEL 8
Fixed stray `GOK` text appearing in the prompt at startup in some versions of iTerm2
Fixed switching to a model whose name contains `application-inference-profile` running your `awsAuthRefresh` command and delaying model-switch hooks when the provider is not Bedrock
Fixed sign-in refresh timeouts and unexpected sign-outs after a short command such as `claude auth status` or `claude plugin list` exited in the middle of a token refresh
Fixed a tool call cut off by a message sent mid-turn during its permission check being reported to the model as rejected by the user
Fixed a case where switching to a model with a smaller context window could spend usage credits on a summary by the previous model without asking first
Fixed conversations being compacted over and over, on a model you didn't pick, behind an LLM gateway whose responses name a different model than the one requested
Fixed vim mode sometimes staying in INSERT after Escape on a slow or busy machine
Fixed Esc discarding a typed AskUserQuestion answer in vim mode: the free-text field now supports vim NORMAL mode, and Esc cancels only from NORMAL
Fixed the Read tool reading binary files such as .xlsm, .parquet, .epub and .heic as text
Fixed a Markdown table with only a header row drawing nothing when too wide for the terminal, including in plans on the plan approval card
Fixed the /claude-api skill saying CMEK external-key endpoints aren't available on Claude Platform on AWS
Fixed skills no longer being listed to the model after using `/rewind`
Fixed the compaction row in a resumed session offering ctrl+o for history that is not loaded; it now says where the earlier messages are saved, and also shows in fullscreen
Fixed the "new task? /clear to save tokens" hint coming back right after you interrupt a response
Fixed the permission prompt for a plugin or skill hook's `ask` decision not showing which plugin or skill the hook comes from
Fixed `/diff` not noticing a conflicted cherry-pick or revert in reftable repositories when one of its git checks timed out or failed
Fixed workflow scripts asking for permission or being refused when read, edited or re-run after a Bash `cd` in the same session
Fixed dim text on the dark ANSI theme and 16-color terminals: faint inside filled boxes, not faint under selection and search highlights, and list descriptions dimmed like other secondary text
Fixed a mod's `$.model.fork` returning `nothing-to-fork` when called before the first response of a new Claude Code process had finished, as in `claude -p` runs and cloud sessions
Fullscreen mode: Fixed `/compact` and auto-compact briefly freezing the UI while the visible transcript is rebuilt
Self-hosted runner: Fixed sessions started from Slack being unable to find or attach a repository when managed settings restrict MCP servers; use `deniedMcpServers` to keep those tools off
Self-hosted runner: Fixed sessions being reported as having a deleted source branch, and not retried, when an unrelated setup or session failure quoted git's missing-ref wording
Self-hosted runner: Fixed the log promising a retry of a failed or declined session release for a session that is ending; repeated failures now show a count
Windows: Fixed stopped background PowerShell commands missing the closing `[killed]` line in their output file
Fixed a conversation that crashes or freezes the panel being reopened on every reload
Fixed the chat panel slowing down during long thinking: it no longer re-parses the whole thinking text on every update
Fixed diagnostics showing "[object Object]" instead of the rule code (e.g. MD013) for some language servers
Fixed the native dictation audio module being loaded, to check microphone permission, where dictation is not offered (non-claude.ai sign-ins, remote windows)