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Release notes

What's new in Claude

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.

All 1,230 Claude436 Codex132 Gemini516 Grok53 Mistral68 DeepSeek22 Meta3

Everything Claude Code Claude apps New models Claude API

Claude API

NewerPage 9 of 15Older

Apr 8, 2026

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.

New modelApr 8, 2026

New model: Claude Managed Agents

We've launched Claude Managed Agents in public 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.

Claude CodeApr 7, 2026

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.

Claude APIApr 7, 2026

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.

Claude CodeApr 4, 2026

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.

Claude CodeApr 2, 2026

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.

Claude CodeApr 1, 2026

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.

Claude CodeApr 1, 2026

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.

Claude APIMar 30, 2026

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.

Claude CodeMar 29, 2026

Claude Code 2.1.87

1 fix

Fixed messages in Cowork Dispatch not getting delivered.

Claude CodeMar 27, 2026

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.

Claude CodeMar 26, 2026

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.

Claude CodeMar 26, 2026

Claude Code 2.1.84

9 new14 fixes17 other

Added PowerShell tool for Windows as an opt-in preview. Learn more at https://code.claude.com/docs/en/tools-reference#powershell-tool. Added ANTHROPIC_DEFAULT_{OPUS,SONNET,HAIKU}_MODEL_SUPPORTS env vars to override effort/thinking capability detection for pinned default models for 3p (Bedrock, Vertex, Foundry), and _MODEL_NAME/_DESCRIPTION to customize the /model picker label.

Claude CodeMar 25, 2026

Claude Code 2.1.83

7 new32 fixes20 other

Added managed-settings.d/ drop-in directory alongside managed-settings.json, letting separate teams deploy independent policy fragments that merge alphabetically. Added CwdChanged and FileChanged hook events for reactive environment management (e.g., direnv).

Claude appsMar 25, 2026

Interactive apps in Claude for iOS and Android

The Claude mobile app can now connect to fully interactive apps. Pull up live charts, sketch diagrams, and build shareable assets, all rendered visually right in your conversation.

Claude appsMar 23, 2026Announcement

Computer use research preview in Cowork and Claude Code + Dispatch improvements

Users on Pro and Max plans can give Claude access to computer use. Claude can open files, run dev tools, point, click, and navigate to what’s on your screen to perform tasks itself—with no setup required. Claude’s new computer use capability makes Dispatch even more helpful by allowing it to use your computer on your behalf while you’re away.

Claude CodeMar 20, 2026

Claude Code 2.1.81

2 new17 fixes8 other

Added --bare flag for scripted -p calls — skips hooks, LSP, plugin sync, and skill directory walks; requires ANTHROPIC_API_KEY or an apiKeyHelper via --settings (OAuth and keychain auth disabled); auto-memory fully disabled. Added --channels permission relay — channel servers that declare the permission capability can forward tool approval prompts to your phone.

Claude CodeMar 19, 2026

Claude Code 2.1.80

5 new6 fixes6 other

Added rate_limits field to statusline scripts for displaying Claude.ai rate limit usage (5-hour and 7-day windows with used_percentage and resets_at). Added source: 'settings' plugin marketplace source — declare plugin entries inline in settings.json.

Claude CodeMar 18, 2026

Claude Code 2.1.79

3 new11 fixes4 other

Added --console flag to claude auth login for Anthropic Console (API billing) authentication. Added "Show turn duration" toggle to the /config menu.

Claude APIMar 18, 2026

We've added model capability fields to the Models API

GET /v1/models and GET /v1/models/{model_id} now return max_input_tokens, max_tokens, and a capabilities object. Query the API to discover what each model supports.

Claude CodeMar 17, 2026

Claude Code 2.1.78

4 new19 fixes3 other

Added StopFailure hook event that fires when the turn ends due to an API error (rate limit, auth failure, etc.). Added ${CLAUDE_PLUGIN_DATA} variable for plugin persistent state that survives plugin updates; /plugin uninstall prompts before deleting it.

Claude CodeMar 17, 2026

Claude Code 2.1.77

1 new28 fixes15 other

Added allowRead sandbox filesystem setting to re-allow read access within denyRead regions.

Claude appsMar 17, 2026

Control Cowork from your phone with a persistent thread (research preview for Pro/Max)

Users on Pro and Max plans can access a persistent agent thread via Claude Desktop or Claude for iOS/Android to manage tasks in Cowork. We're rolling this out to Max plans starting today, and Pro plans over the next two days.

Claude APIMar 16, 2026

We've launched the display field for extended thinking, letting you omit thinking content from responses for…

Set thinking.display: "omitted" to receive thinking blocks with an empty thinking field and the signature preserved for multi-turn continuity. Billing is unchanged. Learn more in Controlling thinking display.

Claude CodeMar 14, 2026

Claude Code 2.1.76

7 new20 fixes8 other

Added MCP elicitation support — MCP servers can now request structured input mid-task via an interactive dialog (form fields or browser URL). Added new Elicitation and ElicitationResult hooks to intercept and override responses before they're sent back.

Claude CodeMar 13, 2026

Claude Code 2.1.75

Claude APIMar 13, 2026

The 1M token context window is out of beta for Claude Opus 4.6 and Sonnet 4.6, at standard pricing

Requests over 200k tokens work automatically for these models with no beta header required. The 1M token context window remains in beta for Claude Sonnet 4.5 and Sonnet 4. We've removed the dedicated 1M rate limits for all supported models. We've raised the media limit from 100 to 600 images or PDF pages per request when using the 1M token context window.

Claude CodeMar 12, 2026

Claude Code 2.1.74

2 new13 fixes2 other

Added actionable suggestions to /context command — identifies context-heavy tools, memory bloat, and capacity warnings with specific optimization tips. Added autoMemoryDirectory setting to configure a custom directory for auto-memory storage.

Claude appsMar 12, 2026

Claude creates interactive charts, diagrams and visualizations

Claude can now create custom charts, diagrams and other visualizations in-line in its responses.

Claude CodeMar 11, 2026

Claude Code 2.1.73

2 new16 fixes8 other

Added modelOverrides setting to map model picker entries to custom provider model IDs (e.g. Bedrock inference profile ARNs). Added actionable guidance when OAuth login or connectivity checks fail due to SSL certificate errors (corporate proxies, NODE_EXTRA_CA_CERTS).