Claude Code Changelog: Complete Version History

Looking for the latest releases? This changelog documents Claude Code's version history through December 2025. For the most current updates, run claude --version in your terminal.

v2.0.65

• Model switching - Switch models mid-prompt with Alt+P (Option+P on Mac)
• Context info - View detailed context window information
• File suggestions - Added setting to configure file suggestion behavior
• Shell detection - New environment variable for shell detection customization
• Prompt history fix - Fixed issues with prompt history navigation
• Image format - Improved image format detection

v2.0.64

• Instant auto-compacting - Faster context management with instant auto-compaction
• Async execution - Agents and bash commands can now run asynchronously
• Stats command - /stats command shows usage metrics and statistics
• Named sessions - Support for named sessions via /rename and /resume commands
• Rules directory - Support for .claude/rules/ directory for project rules
• Image metadata - Added image dimension metadata support
• Environment files - Fixed auto-loading of environment files
• System prompt flags - Fixed system prompt flag handling
• Resume UI - Improved /resume interface experience
• VSCode clipboard - Added clipboard button in VSCode extension
• Windows ARM64 - Fixed Windows ARM64 compatibility issues
• Bedrock tokens - Improved token counting efficiency for Bedrock
• Unified TaskOutputTool - Consolidated agent output handling

v2.0.62

• Recommended indicator - Added "(Recommended)" indicator for multiple-choice questions
• Attribution setting - New setting for commit/PR attribution preferences
• Slash command fix - Fixed slash command duplication issue
• Symlink fix - Fixed issues with symlinked directories
• Skill symlinks - Resolved circular symlink issues in skill files
• Version lock - Fixed version lock file staleness detection
• IDE diff fix - Fixed diff tab close behavior in IDE

v2.0.61

• VSCode revert - Reverted VSCode support for multiple terminal clients due to responsiveness issues

v2.0.60

• Background agents - Agents run in the background while you work
• CLI flag - Added --disable-slash-commands CLI flag to disable all slash commands
• Commit attribution - Added model name to "Co-Authored-By" commit messages
• MCP toggle - /mcp enable [server-name] or /mcp disable [server-name] for quick toggling
• Fetch optimization - Updated Fetch to skip summarization for pre-approved websites
• VSCode multi-client - Added support for multiple terminal clients connecting to IDE server

v2.0.59

• Agent CLI flag - Added --agent CLI flag to override the agent setting for current session
• Agent setting - Configure main thread with a specific agent's system prompt, tool restrictions, and model
• VSCode fix - Fixed .claude.json config file being read from incorrect location

v2.0.58

• Opus 4.5 for Pro - Pro users now have access to Opus 4.5 as part of their subscription
• Timer fix - Fixed timer duration showing "11m 60s" instead of "12m 0s"
• Windows paths - Managed settings now prefer C:\Program Files\ClaudeCode

v2.0.57

• Plan feedback - Added feedback input when rejecting plans, allowing users to tell Claude what to change
• VSCode streaming - Added streaming message support for real-time response display

v2.0.56

• Progress bar setting - Added setting to enable/disable terminal progress bar (OSC 9;4)
• VSCode secondary sidebar - Support for VS Code's secondary sidebar (VS Code 1.97+)

v2.0.55

• Proxy DNS fix - Fixed proxy DNS resolution being forced on by default (now opt-in via CLAUDE_CODE_PROXY_RESOLVES_HOSTS=true)
• Keyboard nav fix - Fixed keyboard navigation becoming unresponsive in memory location selector
• AskUserQuestion improvement - Auto-submit single-select questions on the last question
• Fuzzy matching - Improved @ file suggestions with faster, more accurate results

v2.0.54

• PermissionRequest hooks - Enable hooks to process 'always allow' suggestions
• iTerm fix - Fix issue with excessive iTerm notifications

v2.0.52

• Duplicate message fix - Fixed duplicate message display when starting Claude with command line argument
• Usage command fix - Fixed /usage progress bars to fill up as usage increases
• Linux image paste - Fixed image pasting on Linux systems running Wayland
• Bash improvement - Permit some uses of $! in bash commands

v2.0.51

• Opus 4.5 released - Opus 4.5 is now available
• Claude Code for Desktop - Introducing Claude Code for Desktop
• Updated usage limits - Updated limits for Claude Code users
• Pro extra usage - Pro users can purchase extra usage for Opus 4.5
• Plan Mode improvements - More precise plans and more thorough execution
• Usage notifications - Easier to understand usage limit notifications

v2.0.50

• MCP nested refs fix - Fixed bug preventing calling MCP tools with nested references in input schemas
• Ultrathink display - Improved ultrathink text display
• Session limit clarity - Improved clarity of 5-hour session limit warning

v2.0.49

• Readline paste - Added readline-style ctrl-y for pasting deleted text
• Warning clarity - Improved clarity of usage limit warning message
• Subagent permissions - Fixed handling of subagent permissions

v2.0.47

• Teleport improvements - Improved error messages and validation for claude --teleport
• Usage error handling - Improved error handling in /usage
• History fix - Fixed race condition with history entry not getting logged at exit
• Vertex fix - Fixed Vertex AI configuration not being applied from settings.json

v2.0.45

• Microsoft Foundry - Added support for Microsoft Foundry
• PermissionRequest hook - Automatically approve or deny tool permission requests with custom logic
• Web background tasks - Send background tasks to Claude Code on the web by starting a message with &

v2.0.43

• Agent permissionMode - Added permissionMode field for custom agents
• Hook tool_use_id - Added tool_use_id field to hook input types
• Skills frontmatter - Declare skills to auto-load for subagents
• SubagentStart hook - Added the SubagentStart hook event
• CLAUDE.md fix - Fixed nested CLAUDE.md files not loading when @-mentioning files
• NotebookEdit fix - Fixed cell insertion at incorrect positions

v2.0.42

• SubagentStop fields - Added agent_id and agent_transcript_path fields to SubagentStop hooks

v2.0.41

• Stop hook model - Added model parameter to prompt-based stop hooks
• Slash command fix - Fixed slash commands from user settings being loaded twice
• Plugin hook fix - Fixed crash when plugin command hooks timeout
• Bedrock model fix - Bedrock users no longer see duplicate Opus entries
• Security links - Fixed broken security documentation links

v2.0.37

• Notification idleness - Fixed how idleness is computed for notifications
• Hook matchers - Added matcher values for Notification hook events
• Output styles option - Added keep-coding-instructions option to frontmatter

v2.0.36

• Autoupdater fix - DISABLE_AUTOUPDATER now properly disables package manager update notifications
• Queue fix - Fixed queued messages being incorrectly executed as bash commands

v2.0.35

• Fuzzy search - Improved fuzzy search results when searching commands
• VSCode fonts - Extension respects chat.fontSize and chat.fontFamily settings
• Exit delay - Added CLAUDE_CODE_EXIT_AFTER_STOP_DELAY for automated workflows
• ignorePatterns migration - Migrated to deny permissions in localSettings

v2.0.34

• VSCode permission mode - Added setting to configure initial permission mode for new conversations
• Rust fuzzy finder - Improved file path suggestion performance with native Rust-based fuzzy finder
• OAuth fix - Fixed infinite token refresh loop for MCP servers with OAuth
• Memory fix - Fixed memory crash when reading or writing large files

v2.0.33

• Native launch speed - Native binary installs now launch quicker
• Doctor fix - Fixed claude doctor incorrectly detecting Homebrew vs npm-global installations
• MCP serve fix - Fixed claude mcp serve exposing tools with incompatible outputSchemas

v2.0.32

• Output styles restored - Un-deprecated output styles based on community feedback
• Company announcements - Added companyAnnouncements setting for startup announcements
• Hook progress fix - Fixed hook progress messages not updating during PostToolUse hook execution

v2.0.31

• Windows mode switch - Native installation uses shift+tab for mode switching (instead of alt+m)
• Vertex web search - Add support for Web Search on supported models
• VSCode gitignore - Added respectGitIgnore configuration for file searches
• MCP tool names fix - Fixed "Tool names must be unique" error with subagents
• Compact fix - Fixed /compact failing with prompt_too_long
• Plugin uninstall - Fixed plugin uninstall not removing plugins

v2.0.30

• macOS keychain hint - Added helpful hint to run security unlock-keychain for API key errors
• Sandbox setting - Added allowUnsandboxedCommands sandbox setting
• Agent disallowedTools - Added disallowedTools field to custom agent definitions
• Prompt-based stop hooks - Added prompt-based stop hooks
• SSE MCP on native - Enabled SSE MCP servers on native build
• Output styles deprecated - Deprecated output styles (use --system-prompt-file or plugins instead)
• Explore agent fix - Fixed Explore agent creating unwanted .md files

v2.0.28

• Plan subagent - Introduced new Plan subagent for plan mode
• Subagent resume - Claude can now choose to resume subagents
• Dynamic model selection - Claude can dynamically choose the model used by subagents
• SDK budget flag - Added --max-budget-usd flag
• Git plugins - Add branch and tag support for git-based plugins using fragment syntax

v2.0.27

• New permission UI - New UI for permission prompts
• Branch filtering - Added current branch filtering and search to session resume screen
• Directory @-mention fix - Fixed "No assistant message found" error
• VSCode gitignore - Added config setting to include .gitignored files in searches

v2.0.25

• Legacy SDK removed - Removed legacy SDK entrypoint. Please migrate to @anthropic-ai/claude-agent-sdk

v2.0.24

• Skills fix - Fixed project-level skills not loading with --setting-sources 'project'
• Web teleport - Claude Code Web: Support for Web -> CLI teleport
• Sandbox mode - Releasing sandbox mode for BashTool on Linux & Mac
• Bedrock auth - Display awsAuthRefresh output when auth is required

v2.0.22

• Layout shift fix - Fixed content layout shift when scrolling through slash commands
• IDE thinking toggle - Add toggle to enable/disable thinking
• Permission prompt fix - Fixed duplicate permission prompts with parallel tool calls
• Enterprise MCP - Added support for enterprise managed MCP allowlist and denylist

v2.0.21

• MCP structuredContent - Support for MCP structuredContent field in tool responses
• Interactive questions - Added interactive question tool for better user interaction
• Enhanced plan mode - Claude will now ask you questions more often in plan mode
• Haiku 4.5 for Pro - Added Haiku 4.5 as a model option for Pro users
• Queued commands fix - Fixed issue where queued commands don't have access to previous messages' output

v2.0.20

• Claude Skills - Added support for Claude Skills

v2.0.19

• Auto-background commands - Auto-background long-running bash commands instead of killing them (customizable via BASH_DEFAULT_TIMEOUT_MS)
• Print mode fix - Fixed bug where Haiku was unnecessarily called in print mode

v2.0.17

• Haiku 4.5 released - Added Haiku 4.5 to model selector
• Smart model switching - Haiku 4.5 automatically uses Sonnet in plan mode, Haiku for execution
• Explore subagent - Introducing the Explore subagent powered by Haiku for efficient codebase searching
• OTEL improvements - Support for HTTP_PROXY and HTTPS_PROXY
• Traffic control - CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC now disables release notes fetching

v2.0.15

• Resume fixes - Fixed bug with resuming where previously created files needed to be read again before writing
• Print mode fix - Fixed bug with -p mode where @-mentioned files needed to be read again before writing

v2.0.14

• MCP @-mentions - Fix @-mentioning MCP servers to toggle them on/off
• Permission improvements - Improve permission checks for bash with inline env vars
• Ultrathink fixes - Fix ultrathink + thinking toggle
• Login optimization - Reduce unnecessary logins
• Documentation - Document --system-prompt

v2.0.13

• Native build fix - Fixed /plugin not working on native build

v2.0.12

• Plugin System Released - Extend Claude Code with custom commands, agents, hooks, and MCP servers from marketplaces
• Plugin commands - /plugin install, /plugin enable/disable, /plugin marketplace for plugin management
• Team collaboration - Repository-level plugin configuration via extraKnownMarketplaces
• Plugin validation - /plugin validate command for validating plugin structure
• Diagnostics - Comprehensive error messages via /doctor command

v2.0.11

• System prompt optimization - Reduced system prompt size by 1,400 tokens
• IDE improvements - Fixed keyboard shortcuts and focus issues
• Rate limit fixes - Fixed Opus fallback rate limit errors appearing incorrectly
• Command fixes - Fixed /add-dir command selecting wrong default tab

v2.0.10

• Terminal renderer rewrite - Rewrote terminal renderer for buttery smooth UI
• MCP toggle - Enable/disable MCP servers by @mentioning, or in /mcp
• Tab completion - Added tab completion for shell commands in bash mode
• Hook enhancements - PreToolUse hooks can now modify tool inputs
• Editor integration - Press Ctrl-G to edit your prompt in your system's configured text editor

v2.0.9

• Bash backgrounding fix - Fix regression where bash backgrounding stopped working

v2.0.8

• Bedrock model update - Update Bedrock default Sonnet model to global.anthropic.claude-sonnet-4-5-20250929-v1:0
• IDE drag-and-drop - Add drag-and-drop support for files and folders in chat
• Context fixes - Fix counting for thinking blocks in /context
• Theme improvements - Improve message rendering for users with light themes on dark terminals

v2.0.5

• IME fixes - Fix IME unintended message submission with Enter and Tab
• Terminal link - Add "Open in Terminal" link in login screen
• OAuth fixes - Fix unhandled OAuth expiration 401 API errors

v2.0.1

• Bedrock/Vertex updates - Skip Sonnet 4.5 default model setting change for Bedrock and Vertex
• Bug fixes - Various bug fixes and presentation improvements

v2.0.0

• Native VS Code extension - New native VS Code extension
• Fresh UI - Fresh coat of paint throughout the whole app
• Rewind feature - /rewind a conversation to undo code changes
• Usage tracking - /usage command to see plan limits
• Thinking toggle - Tab to toggle thinking (sticky across sessions)
• History search - Ctrl-R to search history
• SDK rename - The Claude Code SDK is now the Claude Agent SDK
• Dynamic agents - Add subagents dynamically with --agents flag

---

Version 1.0 Series

v1.0.126

• Context command - Enable /context command for Bedrock and Vertex
• mTLS support - Add mTLS support for HTTP-based OpenTelemetry exporters

v1.0.124

• Bash login control - Set CLAUDE_BASH_NO_LOGIN environment variable to skip login shell for BashTool
• Security improvements - No longer inform Claude of the list of allowed tools when permission is denied
• Bash security - Fixed security vulnerability in Bash tool permission checks

v1.0.123

• Bash permission rules - Now support output redirections when matching
• Thinking mode fix - Fixed thinking mode triggering on negation phrases like "don't think"
• SlashCommand tool - Added SlashCommand tool enabling Claude to invoke your slash commands

v1.0.120

• Input lag fix - Fix input lag during typing, especially noticeable with large prompts
• Security fix - Fixed security vulnerability where Bash tool permission checks could be bypassed

v1.0.119

• Windows fix - Fix Windows issue where process visually freezes on entering interactive mode
• Dynamic MCP headers - Support dynamic headers for MCP servers via headersHelper configuration

v1.0.117

• History search - Add Ctrl-R history search to recall previous commands like bash/zsh
• Input lag fix - Fix input lag while typing, especially on Windows

v1.0.115

• Thinking display - Improve thinking mode display with enhanced visual effects
• Thinking toggle - Type /t to temporarily disable thinking mode in your prompt

v1.0.112

• Transcript mode - Added the model used to generate each assistant message
• Hooks improvements - Added systemMessage support for SessionEnd hooks

v1.0.110

• WezTerm support - /terminal-setup command now supports WezTerm
• OAuth refresh - MCP OAuth tokens now proactively refresh before expiration

v1.0.106

• Windows paths - Fixed path permission matching to consistently use POSIX format

v1.0.94

• Vertex global endpoints - Add support for global endpoints for supported models
• Memory editing - /memory command now allows direct editing of all imported memory files
• Todos command - Added /todos command to list current todo items

v1.0.90

• Settings reload - Settings file changes take effect immediately - no restart required

v1.0.88

• OAuth fix - Resolved "OAuth authentication is currently not supported" issue
• Status line - Now includes exceeds_200k_tokens indicator
• Model environment variables - Added ANTHROPIC_DEFAULT_SONNET_MODEL and ANTHROPIC_DEFAULT_OPUS_MODEL

v1.0.85

• Cost visibility - Status line now shows real-time session costs
• Hooks enhancement - New SessionEnd hook for cleanup operations

v1.0.84

• Network stability - Fixed tool_use/tool_result ID mismatch errors during unstable connections
• Built-in ripgrep - Now default (disable with USE_BUILTIN_RIPGREP=0)

v1.0.81

• Output styles released - New educational styles "Explanatory" and "Learning"

v1.0.77

• Opus Plan Mode - New /model setting to use Opus only for planning

v1.0.73

• MCP flexibility - Support multiple config files: --mcp-config file1.json file2.json
• Alpine Linux support - Now works with musl-based distributions

v1.0.71

• Background commands - Ctrl+B runs commands in background (perfect for dev servers)
• Custom status line - Add terminal prompts with /statusline

v1.0.70

• Performance boost - Optimized rendering for large contexts
• Windows fixes - Native file search, ripgrep, and subagents now working

v1.0.69

• Opus 4.1 - Major model upgrade with improved capabilities

v1.0.60

• Custom subagents - Create custom subagents for specialized tasks with /agents

v1.0.58

• PDF support - Added support for reading PDFs

v1.0.51

• Native Windows - Added support for native Windows (requires Git for Windows)

v1.0.38

• Hooks released - Custom automation hooks for pre/post tool execution

v1.0.27

• MCP improvements - Streamable HTTP MCP servers, OAuth support, @-mentionable resources
• Resume command - /resume slash command to switch conversations

v1.0.23

• SDK releases - Released TypeScript SDK and Python SDK

v1.0.11

• Claude Pro support - Claude Code can now be used with a Claude Pro subscription

v1.0.0

• General availability - Claude Code is now generally available
• New models - Introducing Sonnet 4 and Opus 4 models

---

Version 0.2 Series (Beta)

v0.2.96

• Claude Max - Claude Code can now be used with a Claude Max subscription

v0.2.93

• Resume conversations - claude --continue and claude --resume
• Todo list - Claude now has access to a Todo list for organization

v0.2.75

• Message queuing - Hit Enter to queue additional messages while Claude works
• Image support - Drag in or copy/paste image files directly
• @-mentions - @-mention files to directly add them to context

v0.2.54

• Memory shortcut - Start your message with '#' to add to Memory
• Transcript mode - Press ctrl+r to see full output for long tool results
• MCP SSE transport - Added support for MCP SSE transport

v0.2.50

• MCP project scope - Add MCP servers to .mcp.json files and commit to repository

v0.2.47

• Auto-complete - Press Tab to auto-complete file and folder names
• Auto-accept toggle - Press Shift + Tab to toggle auto-accept for file edits
• Infinite conversations - Automatic conversation compaction

v0.2.44

• Thinking mode - Say 'think' or 'think harder' or 'ultrathink' for planning mode

v0.2.34

• Vim bindings - Enable with /vim or /config

v0.2.31

• Custom slash commands - Markdown files in .claude/commands/ directories appear as custom slash commands
• MCP debug mode - Run with --mcp-debug flag for more information about MCP server errors

v0.2.21

• Fuzzy matching - Fuzzy matching for /commands