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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 apps

    Updated memory for Claude

    Memory on Claude now works as a set of individual, categorized entries that Claude reads and updates during your conversations, replacing the previous daily memory summary.

  2. Claude apps

    A new way to reflect with Claude

    Your monthly recap is a new feature at Settings > Reflect that shows you the topics you spent time on, your most active day and peak hour, and observations about how you work with Claude. It's in beta on Free, Pro, and Max plans on the web and Claude Desktop, and requires memory to be on. Alongside it, Settings > Time and focus lets you set optional break reminders and quiet hours.

  3. Claude Code

    Claude Code 2.1.205

    1 new15 fixes7 other

    Added an auto mode rule that blocks tampering with session transcript files.

  4. Claude Code

    Claude Code 2.1.204

    1 fix

    Fixed hook events not streaming during SessionStart hooks in headless sessions, which could cause remote workers to be idle-reaped mid-hook.

  5. Claude API

    You can now set an expiration when you create an API key or an Admin API key in the Claude Console

    Choose a preset, a custom duration, or Never. For keys with a lifetime of at least 7 days, Anthropic emails the creator before expiration. Existing keys are unaffected. The Admin API reports each key’s expiration in the expires_at field.

  6. Claude Code

    Claude Code 2.1.203

    4 new26 fixes7 other

    Added a warning when your login is about to expire, so you can re-authenticate before background sessions are interrupted. Added a grey ⏸ badge to the footer when in manual permission mode, making the active mode always visible.

  7. Claude apps

    Claude Cowork on web and mobile, plus 1 more change

    Claude Cowork is now available on web and mobile in addition to desktop. We are rolling this capability out over the next several weeks starting with the Max plan, with more plans to follow. Cowork runs your sessions remotely (in beta), so your sessions and files are saved to your Claude account and go where you go, on any device. Work continues when you close your laptop, and scheduled tasks run with no device online. Chat and Cowork also share one home now, with one place for your projects and artifacts across both. The Microsoft 365 connector now goes beyond search. With write tools enabled, Claude can draft, send, and organize email, manage calendar events, update mailbox settings, and create and update files in OneDrive and SharePoint. Read and search tools work as before, and Teams remains read-only. Before members can use write tools, a Microsoft Entra administrator needs to consent to the updated permission set and an admin needs to enable them for the organization.

  8. Claude Code

    Claude Code 2.1.202

    2 new13 fixes3 other

    Added a "Dynamic workflow size" setting in /config for controlling how large Claude generally makes dynamic workflows (small/medium/large agent counts) — an advisory guideline, not an enforced cap. Added workflow.run_id and workflow.name OpenTelemetry attributes to telemetry emitted by workflow-spawned agents, so a workflow run's activity can be reconstructed from OTel data.

  9. Claude Code

    Claude Code 2.1.201

    1 other

    Claude Sonnet 5 sessions no longer use the mid-conversation system role for harness reminders.

  10. Claude Code

    Claude Code 2.1.200

    13 fixes4 other

    Changed AskUserQuestion dialogs to no longer auto-continue by default; opt into an idle timeout via /config. Changed the "default" permission mode to "Manual" across the CLI, --help, VS Code, and JetBrains; --permission-mode manual and "defaultMode": "manual" are accepted alongside default.

  11. Claude Code

    Claude Code 2.1.199

    20 fixes4 other

    Stacked slash-skill invocations like /skill-a /skill-b do XYZ now load all leading skills (up to 5), not just the first. Fixed SSL certificate errors (TLS-inspecting proxies, missing NODE_EXTRA_CA_CERTS, expired certs) burning retries before showing actionable guidance — they now fail immediately with the fix hint.

  12. Claude API

    We’ve added the agent-memory-2026-07-22 beta header, which changes how listing memories behaves: results are…

    Page cursors issued without the header aren’t valid with it, so restart from the first page when you adopt it. On memory store endpoints, agent-memory-2026-07-22 replaces managed-agents-2026-04-01; sending both returns a 400 error. On July 22, 2026, the managed-agents-2026-04-01 header adopts the same list behavior. The Python (0.116.0), TypeScript (0.110.0), Go (1.56.0), Java (2.48.0), Ruby (1.55.0), PHP (0.36.0), C# (12.35.0), and CLI (1.16.0) SDKs now send agent-memory-2026-07-22 on all memory store calls instead of managed-agents-2026-04-01.

  13. Claude Code

    Claude Code 2.1.198

    3 new18 fixes12 other

    Added background agent notifications in claude agents — sessions that need input or finish now fire the Notification hook (agent_needs_input / agent_completed). Added /dataviz skill for chart and dashboard design guidance with a runnable color-palette validator.

  14. Claude API

    We’ve restored access to Claude Fable 5 and Claude Mythos 5

  15. Claude appsAnnouncement

    Model entitlements for Enterprise plans (beta)

    Access to Claude Fable 5 and Claude Mythos 5 restored We are restoring access to Claude Fable 5 and Claude Mythos 5. Admins on Enterprise plans can now control what models their users have access to, and what effort level settings they can use.

  16. Claude Code

    Claude Code 2.1.197

    1 other

    Introducing Claude Sonnet 5: now the default model in Claude Code, with a native 1M-token context window and promotional pricing of $2/$10 per Mtok through August 31. Update to version 2.1.197 for access. https://www.anthropic.com/news/claude-sonnet-5.

  17. Claude API

    Claude Managed Agents session event streams now support event deltas

    Opt in with the event_deltas[] query parameter on GET /v1/sessions/{session_id}/events/stream. The event_start and event_delta events preview an agent message’s text as it’s generated, before the complete agent.message event arrives. Listing sessions for Claude Managed Agents now supports backward pagination. When creating a Claude Managed Agents session, you can now override the agent’s configuration for that session. Claude Managed Agents vaults now support an injection_location setting on environment variable credentials (the Environment variable tab). Webhooks for Claude Managed Agents now cover the agent, deployment, and deployment run lifecycle.

  18. Claude appsAnnouncement

    Claude Sonnet 5 launch

    We launched Claude Sonnet 5, our most agentic Sonnet model yet, with substantial improvements over Sonnet 4.6 in reasoning, tool use, coding, and knowledge work.

  19. New modelAnnouncement

    New model: Claude Sonnet 5

    We’ve launched Claude Sonnet 5 (claude-sonnet-5), the next generation of our Sonnet model family, at introductory pricing of $2 / $10 USD per MTok (made the standard price on August 10, 2026). Claude Sonnet 5 supports a 1M token context window, 128k max output tokens, and the same set of tools and platform features as Claude Sonnet 4.6, except Priority Tier, which is not available on Claude Sonnet 5. Three behavior changes apply when migrating: adaptive thinking is now on by default; manual extended thinking (thinking: {type: "enabled", budget_tokens: N}) is removed and returns a 400 error (it was deprecated on Sonnet 4.6); and setting sampling parameters (temperature, top_p, top_k) to non-default values returns a 400 error. Claude Sonnet 5 also uses a new tokenizer that produces approximately 30% more tokens for the same text. The exact increase depends on the content and workload shape. For behavioral differences and model-specific prompting patterns, see Prompting Claude Sonnet 5.

  20. Claude Code

    Claude Code 2.1.196

    3 new16 fixes8 other

    Added support for organization default models — admins set it in the org console; it shows as "Org default" (or "Role default") in /model when you haven't picked one yourself. Added readable default names for sessions at start, making them easier to identify and message.

  21. Claude API

    We’ve removed fast mode for Claude Opus 4.6

    Requests to claude-opus-4-6 with speed: "fast" no longer run at fast speed or premium pricing: they run at standard speed, are billed at standard rates, and do not return an error. The response’s usage.speed field reports the speed used. To continue using fast mode, migrate to Claude Opus 4.8. Read more in Fast mode model availability.

  22. Claude Code

    Claude Code 2.1.195

    1 new8 fixes3 other

    Added CLAUDE_CODE_DISABLE_MOUSE_CLICKS to disable mouse click/drag/hover in fullscreen mode while keeping wheel scroll.

  23. Claude API

    We’ve raised rate limits across the Claude API

    Claude Sonnet and Claude Haiku rate limits now match Claude Opus at every usage tier, and usage tiers have been consolidated into three: Start, Build, and Scale. Most organizations move to a higher tier, no organization receives lower limits than before, and no action is required. You can view your tier and current limits in the Claude Console.

  24. Claude Code

    Claude Code 2.1.193

    6 new5 fixes4 other

    Added autoMode.classifyAllShell setting to route all Bash/PowerShell commands through the auto-mode classifier instead of only arbitrary-code-execution patterns. Added auto-mode denial reasons to the transcript, the denial toast, and /permissions recent denials.

  25. Claude API

    We’ve deprecated fast mode for Claude Opus 4.7, with removal on July 24, 2026

    After removal, requests to claude-opus-4-7 with speed: "fast" will return an error. Migrate to fast mode for Claude Opus 4.8. Read more in Fast mode model availability.

  26. Claude apps

    Enable Trusted Devices for Remote Control

    Admins for Team and Enterprise plans can now require members to verify their device before viewing or steering local Claude Code sessions remotely.

  27. Claude Code

    Claude Code 2.1.191

    1 new12 fixes7 other

    Added /rewind support for resuming a conversation from before /clear was run.

  28. Claude Code

    Claude Code 2.1.190

    1 other

    Bug fixes and reliability improvements.

  29. Claude Code

    Claude Code 2.1.187

    3 new15 fixes3 other

    Added sandbox.credentials setting to block sandboxed commands from reading credential files and secret environment variables. Added org-configured model restrictions to the model picker, --model, /model, and ANTHROPIC_MODEL, with a "restricted by your organization's settings" message when a restricted model is selected.

  30. Claude appsAnnouncement

    Delegate work to Claude in Slack with Claude Tag

    Team and Enterprise plans can now tag Claude directly in Slack conversations and delegate tasks to it while they focus on other work.