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AI release notes

Anthropic's official release notes. Claude apps: the website, desktop and phone apps. Claude Code: Claude's coding assistant. Claude API: what developers use to build Claude into their own products.

Compiled by the Toolstash team · Updated

  1. Claude Code

    Claude Code 2.1.112

    1 fix

    Fixed "claude-opus-4-7 is temporarily unavailable" for auto mode.

  2. Claude Code

    Claude Code 2.1.111

    5 new10 fixes20 other

    Added xhigh effort level for Opus 4.7, sitting between high and max. Available via /effort, --effort, and the model picker; other models fall back to high. Added "Auto (match terminal)" theme option that matches your terminal's dark/light mode — select it from /theme.

  3. Claude API

    We’ve launched Claude Opus 4.7, our most capable model for complex reasoning and agentic coding, at the same…

    Opus 4.7 includes API breaking changes versus Opus 4.6; see the migration guide before upgrading. Claude in Amazon Bedrock is now open to all Amazon Bedrock customers. We’ve launched task budgets in beta on Claude Opus 4.7. Claude Opus 4.7 supports high-resolution image input, raising the maximum image resolution from 1568 to 2576 pixels on the long edge for improved performance on computer use, screenshot understanding, and document analysis. We’ve added the xhigh effort level on Claude Opus 4.7. xhigh sits between high and max and is tuned for long-running agentic and coding tasks (over 30 minutes) with token budgets in the millions.

  4. Claude appsAnnouncement

    Claude Opus 4.7 launch

    Our latest model, Claude Opus 4.7, is now generally available. Opus 4.7 shows improvements in software engineering and complex, long-running coding tasks, as well as better vision, allowing it to see images in higher resolution.

  5. Claude Code

    Claude Code 2.1.110

    4 new19 fixes10 other

    Added /tui command and tui setting — run /tui fullscreen to switch to flicker-free rendering in the same conversation. Added push notification tool — Claude can send mobile push notifications when Remote Control and "Push when Claude decides" config are enabled.

  6. Claude Code

    Claude Code 2.1.109

    1 other

    Improved the extended-thinking indicator with a rotating progress hint.

  7. Claude Code

    Claude Code 2.1.108

    4 new14 fixes6 other

    Added ENABLE_PROMPT_CACHING_1H env var to opt into 1-hour prompt cache TTL on API key, Bedrock, Vertex, and Foundry (ENABLE_PROMPT_CACHING_1H_BEDROCK is deprecated but still honored), and FORCE_PROMPT_CACHING_5M to force 5-minute TTL. Added recap feature to provide context when returning to a session, configurable in /config and manually invocable with /recap; force with CLAUDE_CODE_ENABLE_AWAY_SUMMARY if telemetry disabled.

  8. Claude Code

    Claude Code 2.1.107

    1 other

    Show thinking hints sooner during long operations.

  9. Claude API

    We announced the deprecation of the Claude Sonnet 4 model and the Claude Opus 4 model, with retirement on…

    We recommend migrating to Claude Sonnet 4.6 and Claude Opus 4.8 respectively. Read more in Model deprecations.

  10. Claude Code

    Claude Code 2.1.105

    3 new24 fixes10 other

    Added path parameter to the EnterWorktree tool to switch into an existing worktree of the current repository. Added PreCompact hook support: hooks can now block compaction by exiting with code 2 or returning {"decision":"block"}.

  11. Claude Code

    Claude Code 2.1.104

  12. Claude Code

    Claude Code 2.1.101

    2 new31 fixes13 other

    Added /team-onboarding command to generate a teammate ramp-up guide from your local Claude Code usage. Added OS CA certificate store trust by default, so enterprise TLS proxies work without extra setup (set CLAUDE_CODE_CERT_STORE=bundled to use only bundled CAs).

  13. Claude Code

    Claude Code 2.1.100

  14. Claude Code

    Claude Code 2.1.98

    7 new38 fixes12 other

    Added interactive Google Vertex AI setup wizard accessible from the login screen when selecting "3rd-party platform", guiding you through GCP authentication, project and region configuration, credential verification, and model pinning. Added CLAUDE_CODE_PERFORCE_MODE env var: when set, Edit/Write/NotebookEdit fail on read-only files with a p4 edit hint instead of silently overwriting them.

  15. Claude API

    We’ve launched the advisor tool in beta

    Pair a faster executor model with a higher-intelligence advisor model that provides strategic guidance mid-generation, so long-horizon agentic workloads get close to advisor-solo quality while the bulk of token generation happens at executor-model rates. Include the beta header advisor-tool-2026-03-01 in your requests.

  16. Claude apps

    Claude Cowork generally available, plus 1 more change

    Claude Cowork is now generally available on macOS and Windows through the Claude Desktop app. With this, we’re expanding Claude Cowork with new capabilities: Claude Cowork in the Analytics API.

  17. Claude Code

    Claude Code 2.1.97

    5 new28 fixes13 other

    Added focus view toggle (Ctrl+O) in NO_FLICKER mode showing prompt, one-line tool summary with edit diffstats, and final response. Added refreshInterval status line setting to re-run the status line command every N seconds.

  18. Claude Code

    Claude Code 2.1.96

    1 fix

    Fixed Bedrock requests failing with 403 "Authorization header is missing" when using AWS_BEARER_TOKEN_BEDROCK or CLAUDE_CODE_SKIP_BEDROCK_AUTH (regression in 2.1.94).

  19. Claude API

    We’ve launched the ant CLI, a command-line client for the Claude API that enables faster interaction with…

    Learn more in the CLI quickstart.

  20. New model

    New model: Claude Managed Agents

    We’ve launched Claude Managed Agents in beta, a fully managed agent harness for running Claude as an autonomous agent with secure sandboxing, built-in tools, and server-sent event streaming. Create agents, configure containers, and run sessions through the API. All endpoints require the managed-agents-2026-04-01 beta header. Learn more in Claude Managed Agents overview.

  21. Claude Code

    Claude Code 2.1.94

    5 new16 fixes4 other

    Added support for Amazon Bedrock powered by Mantle, set CLAUDE_CODE_USE_MANTLE=1. Added compact Slacked #channel header with a clickable channel link for Slack MCP send-message tool calls.

  22. Claude API

    We announced Claude Mythos Preview is available as a gated research preview for defensive cybersecurity work…

    Access is invitation-only. The Messages API is now available on Amazon Bedrock as a research preview.

  23. Claude Code

    Claude Code 2.1.92

    3 new11 fixes7 other

    Added forceRemoteSettingsRefresh policy setting: when set, the CLI blocks startup until remote managed settings are freshly fetched, and exits if the fetch fails (fail-closed). Added interactive Bedrock setup wizard accessible from the login screen when selecting "3rd-party platform" — guides you through AWS authentication, region configuration, credential verification, and model pinning.

  24. Claude Code

    Claude Code 2.1.91

    3 new5 fixes5 other

    Added MCP tool result persistence override via _meta["anthropic/maxResultSizeChars"] annotation (up to 500K), allowing larger results like DB schemas to pass through without truncation. Added disableSkillShellExecution setting to disable inline shell execution in skills, custom slash commands, and plugin commands.

  25. Claude Code

    Claude Code 2.1.90

    3 new9 fixes7 other

    Added /powerup — interactive lessons teaching Claude Code features with animated demos. Added CLAUDE_CODE_PLUGIN_KEEP_MARKETPLACE_ON_FAILURE env var to keep the existing marketplace cache when git pull fails, useful in offline environments.

  26. Claude Code

    Claude Code 2.1.89

    5 new30 fixes17 other

    Added "defer" permission decision to PreToolUse hooks — headless sessions can pause at a tool call and resume with -p --resume to have the hook re-evaluate. Added CLAUDE_CODE_NO_FLICKER=1 environment variable to opt into flicker-free alt-screen rendering with virtualized scrollback.

  27. Claude API

    We’ve raised the max_tokens cap to 300k on the Message Batches API for Claude Opus 4.6 and Sonnet 4.6

    Include the output-300k-2026-03-24 beta header to generate longer single-turn outputs for long-form content, structured data, and large code generation tasks. We’re retiring the 1M token context window beta for Claude Sonnet 4.5 and Claude Sonnet 4 on April 30, 2026.

  28. Claude Code

    Claude Code 2.1.87

    1 fix

    Fixed messages in Cowork Dispatch not getting delivered.

  29. Claude Code

    Claude Code 2.1.86

    2 new16 fixes8 other

    Added X-Claude-Code-Session-Id header to API requests so proxies can aggregate requests by session without parsing the body. Added .jj and .sl to VCS directory exclusion lists so Grep and file autocomplete don't descend into Jujutsu or Sapling metadata.

  30. Claude Code

    Claude Code 2.1.85

    4 new17 fixes9 other

    Added CLAUDE_CODE_MCP_SERVER_NAME and CLAUDE_CODE_MCP_SERVER_URL environment variables to MCP headersHelper scripts, allowing one helper to serve multiple servers. Added conditional if field for hooks using permission rule syntax (e.g., Bash(git *)) to filter when they run, reducing process spawning overhead.