Anthropic Articles
54 articles across AI Catchup's news, guides, tutorials, and comparisons.
All Anthropic articles
Claude Managed Agents Adds a Terminal Session Viewer and Auto Permission Mode
Claude Managed Agents now includes a terminal workflow for attaching to live sessions and a local web session viewer. Anthropic also added an auto permission mode that evaluates each agent or MCP tool call against the intent in user.message and runs, denies, or pauses for approval.
Claude Code Adds Plugin Evals for Regression Testing and No-Plugin Baselines
Claude Code now includes `claude plugin eval`, a testing workflow for plugin and skill authors. The command can create cases and graders, run a plugin in isolated non-interactive sessions, compare results with a no-plugin baseline, generate an HTML report, and support CI gates for plugin changes. Evals require Claude Code v2.1.269 or later and consume model usage.
Claude Code Desktop Adds Pop-Out Panes for Diff and Terminal Work
ClaudeDevs says Claude Code Desktop can now pop out any pane into its own window. You can move a diff or terminal to another screen while Claude keeps working, dock it back later, and run sessions side by side or stacked.
Claude Marketplace Adds Cursor, CrowdStrike, Factory, Gamma, and Vercel
Anthropic is expanding Claude Marketplace with Cursor, CrowdStrike, Factory, Gamma, and Vercel. Enterprise customers can use an existing Anthropic spend commitment to buy Claude-powered solutions from marketplace partners, with Anthropic directing buyers to their account team rather than a self-serve checkout.
Claude Computer Use Runs in the Background in Cowork and Claude Code
Anthropic added computer use to Claude Cowork and Claude Code in the Claude Desktop app. Claude can click, type, open apps, and use dev tools while you keep working on macOS, with Windows support also documented. The beta is limited to Pro and Max plans and still requires the desktop app to be open and the computer awake.
Claude's ant CLI Can Now Manage Agent Resources as Code
Anthropic added `ant apply` to the Claude CLI, letting teams declare Managed Agent environments, agents, skills, memory stores, and deployments in a repository and reconcile them with the Claude API.
Anthropic Open-Sources a Commerce Agents Blueprint for Claude
Anthropic has launched an open-source blueprint for building commerce agents with Claude. It includes shopping and merchant agent implementations, demos across retail, travel, telecom, and ticketing, guardrails, and a Claude Code plugin.
Claude Code Desktop Can Now Resume Sessions Started in the Terminal
Claude Code can now move a terminal-started session into the Claude Code desktop app. Anthropic says users can type /resume, choose a CLI session, and continue with the full conversation and context intact.
Claude Fable 5.1 and Mythos 5.1: Same Price, Cheaper Cache Reads, Fewer Safeguard Interventions
Anthropic released Claude Fable 5.1, available today as claude-fable-5-1 at $10 per million input and $50 per million output tokens, with cache reads cut 75% to $0.25 per million. Anthropic estimates typical workloads cost about 25% less than Fable 5. Claude Mythos 5.1 is the same model with fewer cyber and life-science safeguards, limited to vetted US organizations.
Anthropic Opens a Claude Team Plan for Scientists With Free Standard Seats
Anthropic opened a Claude Team plan for scientists on August 27, 2026. Verified principal investigators at eligible academic and nonprofit institutions can apply for free Standard seats or Premium seats at $15 per user per month for 12 months, with Claude Science, Claude Code, Cowork, shared projects, and administration included.
Claude's Memory Now Works Across Chat and Cowork
Claude memory now carries context between Claude chat and Cowork. Anthropic says users can review or remove saved topics, while Team and Enterprise administrators can control the feature for their organizations.
Claude Code Weekly Limits Are Now 25% Higher Permanently: Anthropic Confirms the September 14 Change
As of September 14, 2026, Anthropic documents the permanent increase on its own support article: weekly limits in Claude Code are 25% higher than they were before the May-September promotion for Pro, Max, Team, and seat-based Enterprise plans. The 50% promotion ended September 13 at 11:59 PM PT. Five-hour limits, prices, and other Claude products are unchanged.
Claude Cowork Gets a Built-In Browser: Web Tasks Without an Extension
Anthropic added a built-in browser to Claude Cowork on the desktop app. Claude can open webpages in a separate side-panel browser, read pages, click, type, and fill forms without using the user's own tabs or browser extension. The rollout covers Pro, Max, and Team plans, with Enterprise admin controls available first.
Claude Makes Enterprise-Managed Auth for MCP Connectors Generally Available
Anthropic says enterprise-managed auth for MCP connectors is now generally available. Claude Team and Enterprise admins can centralize authorization through their identity provider, while users receive connector access automatically without individual OAuth consent flows.
Claude Code Remote Control Can Start Sessions From Your Phone
As of August 2026, a machine running claude remote-control appears as a device card at the top of the Code tab in the Claude app: tap it, pick a directory, and a session starts on that machine. Anthropic's Week 34 digest also took Remote Control out of research preview. Code and files stay local.
Claude Security Brings Mythos 5 Scans to Enterprise Customers
Anthropic says Claude Security scans now run on Claude Mythos 5 for Claude Enterprise customers. The public-beta product scans connected codebases, returns CWE, confidence, severity, and suggested-fix details, and opens approved fixes in Claude Code on the web without exposing the Mythos model directly.
Claude Platform Makes Computer Use, Browser Use, Skills, and Files Generally Available
Anthropic says computer use, browser use, the Skills API, and the Files API are now generally available on the Claude Platform, combining multi-action software control with versioned skills and reusable files for production agents.
Claude Managed Agents Add Memory Stores, Domain Controls, and a Redesigned Console
Anthropic's Claude Managed Agents updates let self-hosted sandbox sessions attach memory stores, restrict web_search and web_fetch with allowed_domains or blocked_domains, and inspect multi-agent sessions in a redesigned Claude Console viewer.
Claude Can Now Send Gmail Emails and Manage Google Drive Files
Anthropic's Claude can now send and reply to Gmail messages and manage Google Drive files from the connectors menu. The official announcement says the update is available on paid plans, while Anthropic's current help documentation details approval prompts, supported actions, admin controls, and important data-access limits.
Claude Code Desktop Adds Auto-Continue After Usage Limits
Claude Code waits in the open session and continues your task automatically when a claude.ai usage limit resets. It is on by default from version 2.1.234 in interactive sessions signed in with a claude.ai subscription. Turn it off in /config under 'Continue automatically at usage limit' or set autoContinueAtUsageLimit to false. It resumes work; it does not raise the limit.
Claude in Chrome Sessions Now Continue Across Devices
Anthropic says Claude in Chrome sessions now carry over to desktop, web, and mobile. Conversations are saved to the user's account, while skills and connectors can work from the browser; Claude's current Chrome page lists the extension as available on all paid plans.
Prompting Claude Fable 5: What to Change and What to Delete
Prompt Claude Fable 5 with less, not more: brief instructions now beat enumerated rule lists, and old skills written for prior models can degrade output. Use effort as your main cost control, expect longer turns, ground progress claims in tool results, and configure fallback to Opus 4.8 for safeguard refusals.
Prompting Claude Opus 5: Trim the Verbosity, Delete the Verification
Claude Opus 5 needs opposite prompting from its predecessors: you prompt for conciseness because effort no longer controls visible length, and you delete verification and double-check instructions because the model already does both. Constrain scope on narrow tasks, cap subagent spawning for cost, and keep thinking enabled at low effort rather than disabling it.
Claude Code Will Make Auto Mode the Default on August 14
As of September 2026, auto mode is the default permission mode for new Claude Code sessions on Pro, Max, and Team plans; the switch took effect on August 14, 2026, as Anthropic announced on August 7. Enterprise plans, Console API keys, and the Bedrock, Agent Platform, Foundry, and Claude Platform on AWS integrations still start in manual (default) mode. The mode routes tool calls through a safety classifier, keeps manual approval available, and does not charge Pro, Max, or Team for classifier calls.
Claude Code Sessions Can Now Message Each Other
Claude Code lets independent sessions discover and message one another, with controls for holding, refusing, or approving incoming messages. As of August 2026, sessions can also start conversations with sessions on other machines or Claude Code on the web, and native Windows is supported; the August 7 launch allowed only replies across machines and covered macOS and Linux. Messaging is on with nothing to enable; a held message in a headless session now expires after five minutes by default.
Claude Fable 5 Reduces Biology Fallbacks by About 85%
Anthropic says an update to Claude Fable 5's biology safeguards reduced biology-related fallbacks by about 85% in testing. Fable 5 can now handle a wider range of everyday health and educational questions, while dual-use professional biology and drug-development requests remain restricted.
MCP 2026-07-28 Moves to a Stateless Core as Claude Rolls Out Support
Anthropic says the MCP 2026-07-28 specification moves the Model Context Protocol from a bidirectional stateful design to a request/response model, adds versioned extensions for MCP Apps and Tasks, and aligns authorization with production OAuth 2.0 and OIDC deployments.
Claude Code artifacts can now call MCP connectors for live, viewer-specific data
Claude Code artifacts can call MCP connectors each time someone views them, so a published page shows current data rather than a session snapshot. Available on Pro, Max, Team, and Enterprise plans, requiring Claude Code v2.1.209 or later. Connector-backed artifacts cannot be shared to a public link on any plan.
Claude Code Desktop Adds an iOS Simulator Pane: Watch Claude Test Your App Live
Claude Code Desktop opens Apple's iOS Simulator in a pane beside your conversation when Claude builds or checks your app, taps through it, and reads the screen to verify its own changes. Public beta on macOS for Pro, Max, Team, and Enterprise plans; needs Claude Desktop v1.24012.0+ and Xcode 26.x, not Xcode 27.
Claude Code Ships Screen Reader Mode: Plain-Text TUI for VoiceOver and NVDA
Claude Code now has an opt-in screen reader mode that replaces boxes, spinners, and in-place redraws with labeled linear text that VoiceOver and NVDA read in order. Turn it on with the --ax-screen-reader flag, the CLAUDE_AX_SCREEN_READER env var, or the axScreenReader setting (v2.1.181+). Menus become numbered lists, a terminal bell signals when Claude needs you, and separate settings cover magnifiers, reduced motion, and colorblind themes.
Claude Adds Reflect: A Monthly Recap and Usage Dashboard for How You Use Claude
Anthropic introduced Reflect, a beta dashboard in Claude's Settings that shows a monthly recap of when you use Claude most and what you worked on, with quiet hours and break nudges. It runs only when memory is on, covers Free, Pro, and Max but not Team or Enterprise, and skips incognito chats, health integrations, Cowork, and Claude Code.
Claude Cowork Reaches Web and Mobile for Paid Plans
Claude Cowork is now available on web and mobile in beta for paid plans, so sessions can follow your Claude account across desktop, browser, and phone while work continues in the cloud.
Claude Code Artifacts Expand to Pro and Max Plans (Private by Default)
Anthropic's ClaudeDevs says Claude Code Artifacts are now available on Pro and Max plans. The Claude Code docs now list Pro/Max/Team/Enterprise as eligible, with Pro/Max artifacts remaining private to the individual user.
Anthropic raises Claude API rate limits and consolidates tiers into Start, Build, and Scale
Anthropic consolidated Claude Platform usage tiers into three -- Start, Build, and Scale -- and raised rate limits so Sonnet and Haiku match Opus at every tier. Tier placement is automatic, based on usage history rather than spend, but each tier still carries a monthly spend cap.
Claude Desktop for Linux Beta: Ubuntu and Debian, With Caveats
Anthropic shipped a beta of the Claude desktop app for Linux on Ubuntu 22.04+ and Debian 12+ (x86_64 or arm64), with Chat, Cowork, and Claude Code on all paid plans. The app does not self-update; updates arrive through apt, and as of August 2026 a directly installed .deb registers the repo itself. Computer Use and Dictation are missing.
Claude Science Beta: An AI Workbench for Reproducible Research
Claude Science is Anthropic's beta research app, not a model. It runs Python and R analyses in a local sandbox, queries 60+ scientific databases, submits jobs over SSH or to Modal, and attaches code, environment, and conversation provenance to every artifact. As of September 2026 it runs on macOS, Windows, and Linux for Pro, Max, Team, and Enterprise plans.
Claude Sonnet 5 Launch: Anthropic's Most Agentic Sonnet, Now the Default Tier
Anthropic launched Claude Sonnet 5 on June 30, 2026, calling it its most agentic Sonnet yet -- it plans, drives browsers and terminals, and runs autonomously. It is the default for Free and Pro, available across all plans, in Claude Code, and on the API as claude-sonnet-5. Anthropic later made its $2 per million input and $10 per million output token pricing permanent.
Claude Code Adds Artifacts: Live, Shareable Pages for PR Walkthroughs and Dashboards
Anthropic introduced Artifacts in Claude Code, letting Team and Enterprise orgs turn an in-progress Claude Code session into a live web page that updates as the session progresses and can be shared privately within the organization.
Claude Design's `/design-sync` Makes Claude Design and Claude Code a Two-Way Workflow
Anthropic's `/design-sync` pulls your design system into Claude Design so everything Claude builds starts from your real components, and keeps work synced as you move between Claude Design and Claude Code. You can start in either surface, hand a finished design off to Claude Code, and continue from existing work instead of a screenshot.
Anthropic Abruptly Suspends Fable 5 and Mythos 5 Access After US Government Directive
Anthropic says a US government export control directive ordered it to suspend all access to Claude Fable 5 and Mythos 5 by any foreign national, inside or outside the US. To comply, Anthropic is disabling both models for all customers. It says access to every other Anthropic model is unaffected, and that it is working to restore Fable 5 and Mythos 5 as soon as possible.
Claude Fable 5 and Mythos 5: Mythos-Class Capability Goes General, With Caveats
Anthropic launched Claude Fable 5, a Mythos-class model made safe for general use and available today as claude-fable-5, plus Claude Mythos 5 for vetted cyberdefenders via Project Glasswing. Pricing is $10 per million input and $50 per million output tokens, with free subscription access ending June 23 and a mandatory 30-day data-retention policy on all Mythos-class traffic.
Claude Platform's 'ant' CLI Brings the Full Claude API to Your Terminal
Anthropic's 'ant' CLI exposes every Claude API resource as a terminal subcommand. As of September 2026 you install it through Homebrew, curl, or Go, authenticate by browser login, API key, or Workload Identity Federation, manage agents as code with 'ant apply' (CLI 1.30.0 or later), and run a self-hosted Managed Agents worker with 'ant beta:worker poll' or 'ant beta:worker run'.
Claude Code adds dynamic workflows (research preview) for large parallel agent runs
Dynamic workflows in Claude Code let Claude write orchestration scripts, fan out work across tens to hundreds of parallel subagents, verify results, and resume long-running jobs.
Claude Opus 4.8 Fast Mode: 2.5x Faster Output Tokens in Research Preview
Anthropic launched Fast mode for Claude Opus 4.8 in research preview, promising 2.5x faster output token speeds with the same Opus-level intelligence. It is available now in Claude Code for developers with extra usage enabled, and on the Claude Platform API through an account manager or a waitlist form.
Claude Code ships a security-guidance plugin for in-session vulnerability checks
Anthropic shipped an official security-guidance plugin for Claude Code. It runs automatic vulnerability checks while Claude edits files, at the end of each turn, and when Claude runs commits or pushes through its Bash tool.
Claude Agent SDK Monthly Credit on Paid Plans: Announced for June 15, 2026, Then Paused
As of August 2026, the Claude Agent SDK monthly credit is not available: Anthropic paused the change on June 15, 2026, and Agent SDK, `claude -p`, and third-party app usage still draw from your subscription's usage limits. The May 26 announcement had promised Pro, Max, Team, and Enterprise plans $20 to $200 per month from June 15.
Claude Managed Agents Add Self-Hosted Sandboxes (Public Beta) and MCP Tunnels (Research Preview)
Anthropic says Claude Managed Agents can now run tool execution in a sandbox you control (public beta) and connect to private MCP servers via MCP tunnels (research preview). The update targets enterprise security requirements by keeping execution and private services within an organization's perimeter.
Claude Code 2.1.142: `claude agents` Gains Session Flags, Fast Mode Defaults to Opus 4.7, MCP Tool Timeout Honored
Claude Code 2.1.142 (May 14, 2026) added eight dispatch flags to `claude agents`, moved fast mode's default from Opus 4.6 to Opus 4.7, and made `MCP_TOOL_TIMEOUT` raise the 60-second per-request cap on remote MCP servers. As of September 2026 the flags and the timeout fix stand, but fast mode has left Opus 4.7: the default moved to Opus 4.8 in 2.1.154 and to Opus 5 in 2.1.219, and the 4.6 override variable is a no-op.
Claude Code +50% Weekly Limits Promo Ended September 13, 2026; Limits Are Now 25% Higher Permanently
Anthropic's +50% Claude Code weekly-limits promotion ended September 13, 2026 at 11:59 PM PT. On September 14 Anthropic rewrote its support article: starting September 14, 2026, weekly limits in Claude Code are 25% higher than they were before the promotion for Pro, Max, Team, and seat-based Enterprise plans. Five-hour limits are unchanged.
Claude Code 2.1.133: `worktree.baseRef` Default Returns to `origin/<default>`, MCP OAuth Proxy Honored Across the Whole Flow
Anthropic shipped Claude Code 2.1.133 on May 7, 2026. The headline is a worktree-base behavior change: a new `worktree.baseRef` setting (`fresh` | `head`) defaults to `fresh`, which moves `EnterWorktree`'s base back to `origin/<default>` after three days of branching from local `HEAD` (since 2.1.128 on May 4). The release also routes `HTTP(S)_PROXY` / `NO_PROXY` / mTLS through the entire MCP OAuth flow (discovery, dynamic client registration, token exchange, refresh), exposes effort level to hooks via `$CLAUDE_EFFORT`, adds Linux sandbox path overrides, and fixes a refresh-token race that was 401-ing parallel sessions.
Anthropic's Claude Code Post-Mortem: Three Engineering Missteps Behind the Spring 2026 Quality Decline
Anthropic published a post-mortem on April 23, 2026 explaining the Claude Code quality regression that ran from early March through mid-April: a March 4 default-effort downgrade from high to medium, a March 26 caching change that wiped reasoning history every turn, and an April 16 verbosity prompt that capped responses at 25 words between tool calls. All three were resolved by April 20, the API was unaffected, and Anthropic reset usage limits for all subscribers.
Claude Opus 4.7 Best Practices: How to Actually Get the Most Out of the Upgrade
Claude Opus 4.7 follows instructions more literally than 4.6, runs longer agentic tasks more reliably, and ships a new xhigh effort level. Anthropic's launch-day guidance is to specify the task up front, batch your interactions, use auto mode, and default to xhigh; this guide adds the verification, recap, and scoping habits that make those gains show up in your sessions.
Claude Design Launches: Anthropic Labs Turns Opus 4.7 Into a Prototype, Deck, and Wireframe Surface
Anthropic launched Claude Design on April 17, 2026 -- a research preview from Anthropic Labs that turns a prompt, uploaded image, or codebase into polished prototypes, pitch decks, and mockups. Powered by Claude Opus 4.7 vision, it learns your team's design system, exports to Canva, PDF, PPTX, or HTML, and packages finished designs for Claude Code handoff.
Claude Opus 4.7 Is Here: State-of-the-Art Coding, xhigh Effort, and a New Cyber Safeguards Tier
Anthropic launched Claude Opus 4.7 on April 16, 2026 -- a notable improvement on Opus 4.6 in advanced software engineering, with the same pricing, a new xhigh effort level, /ultrareview in Claude Code, higher-resolution vision, and the first deployment of cyber safeguards from the Mythos Preview track.