Developer Tools & APIs
Claude Opus 4.1 retires on 5 August 2026: migrate to Opus 4.8 now
The claude-opus-4-1-20250805 model ID stops working on 5 August 2026. Here's what to change and why Opus 4.8 is the right target.
Topic
Anthropic
67 posts about Anthropic from Simon Carter.
Developer Tools & APIs
Anthropic is retiring the legacy Claude Workbench and three experimental prompt API endpoints on 17 August 2026
The legacy Workbench and three /v1/experimental/ prompt endpoints shut down 17 August 2026. Here's what to export and what replaces them.
Developer Tools & APIs
Anthropic is retiring Claude Opus 4.1 on August 5, 2026 — here's what developers need to do
Anthropic has deprecated claude-opus-4-1-20250805 with a retirement date of August 5, 2026. Opus 4.8 is the recommended replacement.
Developer Tools & APIs
Claude Sonnet 4 and Opus 4 are gone from the API — here's what to do
As of June 15, 2026, claude-sonnet-4-20250514 and claude-opus-4-20250514 return errors. Migrate to Sonnet 4.6 and Opus 4.8.
Developer Tools & APIs
Anthropic Extends Claude Code Usage Boost to August 19 — And Sonnet 5 API Pricing Jumps 50% on September 1
Claude Code Pro/Max limits stay 50% higher through August 19, 2026. Sonnet 5 API intro pricing ends August 31 — and a tokenizer change makes the real cost rise bigger than it looks.
Cloud & Infrastructure
Claude went down twice in 14 hours — and Anthropic's uptime numbers tell the full story
Two Claude outages in 14 hours on June 22–23 pushed 90-day uptime below enterprise SLA thresholds, with 8,000+ Downdetector reports at peak.
Developer Tools & APIs
Claude Code Artifacts can now pull live data through MCP connectors every time someone opens them
Claude Code Artifacts gain live MCP connector data, public sharing links, editor roles, and Claude Tag integration — here's what changed and what it means.
Developer Tools & APIs
MCP 2026-07-28: Stateless Core, Hardened Auth, and Official Extensions Land Across Claude
The fifth MCP spec drops stateful sessions for a request/response core, hardens OAuth/OIDC auth, and graduates MCP Apps and Tasks as versioned extensions.
Security & Governance
Claude's 'Share' Feature Was Quietly Publishing Conversations to Google Search
A missing noindex tag meant shared Claude chats were publicly discoverable on Google, exposing legal advice, API keys, and crypto wallet credentials.
Security & Governance
Claude now integrates with 28 enterprise security platforms — here's what that means for IT and compliance teams
Anthropic's Compliance API now connects Claude Enterprise to 28 security platforms including Palo Alto Networks, Rubrik, Okta, and Sumo Logic.
Consumer AI
Anthropic's Economic Index is now a Claude connector — ask it anything about AI and work
Anthropic's Economic Index data is now queryable inside Claude.ai via a free connector, letting anyone explore how AI is being used across jobs and tasks.
Security & Governance
Anthropic's $200M Research Fund: Five Questions It's Paying to Answer About AI and Jobs
Anthropic has published a five-priority research agenda for its $200M Economic Futures Research Fund, targeting AI-driven worker displacement.
Developer Tools & APIs
Claude Code v2.1.178: Precise Tool Permissions, Smarter Config Resolution, and Safer Sub-Agents
Claude Code's latest release adds parameter-level permission syntax, proximity-based .claude/ directory resolution, and pre-launch safety screening for sub-agents.
Agents & Automation
Claude Cowork's 'Record a Skill' turns your screen recordings into reusable AI workflows
Anthropic's new Record a Skill feature lets Pro, Max, and Team users demonstrate a task once on screen and have Claude save it as a reusable, rerunnable skill.
Developer Tools & APIs
claude-mythos-preview Is Deprecated — But Its Replacement Is Currently Unavailable
Anthropic has formally deprecated claude-mythos-preview with a June 30 2026 retirement date, directing developers to migrate to claude-mythos-5 — which is currently suspended.
Cloud & Infrastructure
Claude Fable 5 is now available on Google Cloud's Gemini Enterprise Agent Platform
Anthropic's Mythos-class Claude Fable 5 model is now available in Vertex AI's Model Garden, billed through Google Cloud with no separate Anthropic API subscription needed.
Developer Tools & APIs
Anthropic pauses its Agent SDK billing change on the day it was supposed to launch
Anthropic pulled back its planned Agent SDK credit separation on June 15, the day it was set to go live, saying it will rework the plan before any future change.
Developer Tools & APIs
Claude Agent SDK Billing Splits on June 15: What the New Credit Pool Means for Your Plan
From June 15, Claude Agent SDK, claude -p, GitHub Actions, and third-party agents draw from a separate monthly credit, not your subscription quota.
Developer Tools & APIs
Claude Code v2.1.169: Safe Mode, /cd Command, and a Pile of Bug Fixes
Claude Code v2.1.169 adds --safe-mode for clean troubleshooting sessions, a /cd command that preserves prompt cache, and fixes for Windows, background agents, and enterprise MCP policies.
Security & Governance
Anthropic adds granular admin permissions to Claude Enterprise custom roles
Claude Enterprise plans can now grant members access to specific admin areas like billing or privacy without making them full Owners.
Consumer AI
Claude Reflect: Anthropic's new usage dashboard shows you how you actually use AI
Anthropic's Reflect feature gives Free, Pro, and Max users a personal dashboard showing usage patterns, topic breakdowns, and AI fluency insights — with clear privacy limits.
Security & Governance
Anthropic reverses hidden Claude Fable 5 restriction that silently degraded outputs for AI researchers
Anthropic walked back a covert policy that quietly limited Claude Fable 5's usefulness for frontier LLM development tasks, without telling users.
Developer Tools & APIs
Claude for Chrome is now generally available: what the browser extension means for your dev workflow
Anthropic's Claude for Chrome extension has exited preview and is now generally available to all direct paid plan users, bringing browser automation into Claude Code.
Agents & Automation
Claude Code Auto Mode now works on Amazon Bedrock, Google Vertex AI, and Microsoft Foundry
Claude Code v2.1.158 extends Auto Mode to enterprise cloud providers via a single environment variable, for Opus 4.7 and 4.8 users.
Agents & Automation
Claude Cowork comes to web and mobile, with sessions that run while your laptop is closed
Claude Cowork is now in beta on web and iOS/Android for Max plan users, with cloud-run sessions, doubled usage limits through August 5, and new M365 write access.
Workplace AI
Claude Opus 4.8 is now in Microsoft 365 Copilot — here's what changes for you
Anthropic's Claude Opus 4.8 arrives in Microsoft 365 Copilot on day one, expanding to Copilot Chat, Excel, PowerPoint, and Copilot Studio with stronger reasoning and Work IQ grounding.
Security & Governance
Anthropic confirms hidden tracking mechanism in Claude Code after China's national vulnerability database issues formal security advisory
Claude Code versions 2.1.91–2.1.196 contained an undisclosed monitoring mechanism. Here's what it did, who's affected, and what to do now.
Models & Assistants
Claude Fable 5 is here: Anthropic's first public Mythos-class model, with a safety wall built in
Anthropic launches Claude Fable 5 with a 1M-token context window, $10/$50 pricing, and a safety-classifier fallback — plus a restricted Mythos 5 for Project Glasswing partners.
Security & Governance
US Government Forces Anthropic to Pull Claude Fable 5 and Mythos 5 Worldwide Over Export Control Directive
A Commerce Department directive citing national security concerns forced Anthropic to suspend all access to Claude Fable 5 and Mythos 5 globally.
Security & Governance
Anthropic Lets Admins Provision MCP Connectors for the Whole Org Through Okta — Zero Setup for Users
Claude's new beta feature lets Team and Enterprise admins push MCP connectors to users via Okta, eliminating per-user OAuth flows on first login.
Security & Governance
Claude Code and Claude Cowork Come to US Federal Agencies in FedRAMP High-Authorized Public Beta
Anthropic launches Claude Code and Claude Cowork in public beta for Claude for Government Desktop, with tamper-evident audit logs, department spend controls, and MDM deployment.
Security & Governance
Claude Mythos 5 launches in secret: same model as Fable 5, cybersecurity safeguards removed
Anthropic's restricted Claude Mythos 5 shares its architecture with Fable 5 but ships without cybersecurity guardrails, deployed via Project Glasswing with the US government.
Models & Assistants
Anthropic found a hidden 'workspace' inside Claude — and built a tool to read it
Anthropic's J-lens research reveals a small internal neural workspace in Claude that mirrors neuroscience's global workspace theory, with real safety implications.
Security & Governance
Claude Enterprise gets model-level analytics, role-based entitlements, and spend alerts
Anthropic adds per-model usage analytics, admin-configurable model entitlements, and spend-threshold alerts to Claude Enterprise.
Security & Governance
Claude Managed Agents can now store API keys in a vault — and the agent never sees them
Anthropic's vault-stored environment variables let Claude Managed Agents authenticate CLI tools without the API key ever entering the agent's context window.
Agents & Automation
Claude Science: Anthropic's AI Workbench Built for Researchers, Not Just Chatting About Research
Anthropic launches Claude Science, a purpose-built AI workbench unifying 60+ scientific tools, auditable artifacts, and flexible compute for researchers.
Cloud & Infrastructure
Claude Opus 4.8 and Haiku 4.5 are now generally available in Microsoft Foundry on Azure
Azure becomes the only cloud with both OpenAI and Claude frontier models, as Claude Opus 4.8 and Haiku 4.5 go GA in Microsoft Foundry on NVIDIA GB300 GPUs.
Agents & Automation
Anthropic updates Claude Managed Agents: self-hosted sandboxes, mid-session tool swapping, and cache diagnostics
Anthropic ships three Claude Managed Agents platform updates giving enterprise developers more infrastructure control, runtime flexibility, and prompt-cache transparency.
Agents & Automation
Claude Managed Agents now run tool execution on your own infrastructure
Anthropic splits agent orchestration from tool execution, letting enterprises run agent 'hands' in their own sandboxes while Claude's 'brain' stays on Anthropic.
Models & Assistants
Claude Design now keeps your brand consistent across sessions and syncs directly with Claude Code
Claude Design moves to beta with design system persistence, WYSIWYG canvas editing, bidirectional Claude Code sync, and a new desktop app home.
Agents & Automation
Claude Code v2.1.172: Nested Sub-Agents, Background Jobs, and a Raft of Bug Fixes
Claude Code v2.1.172 ships nested sub-agents up to 5 levels deep, background job syntax, plugin search, smarter Bedrock region handling, and 30 fixes.
Developer Tools & APIs
Anthropic adds an observability dashboard and in-app submission flow for Claude MCP connector owners
Claude's new public-beta dashboard gives MCP connector owners usage metrics, error diagnostics, and latency data — plus a direct submission flow to the connectors directory.
Cloud & Infrastructure
Anthropic and DXC Technology are bringing Claude into the world's most complex enterprise IT systems
DXC Technology becomes a Global Premier Claude partner, training tens of thousands of engineers to deploy Claude inside mission-critical systems for banks, airlines, and insurers.
Workplace AI
Anthropic launches Claude Corps: $150M fellowship to place 1,000 AI workers inside US nonprofits
Anthropic's Claude Corps will train and pay 1,000 early-career fellows $85K each to spend a year building AI tools inside US nonprofits, starting October 2026.
Agents & Automation
Anthropic's Managed Agents now run on a schedule and store credentials securely — no custom plumbing required
Anthropic's public beta adds cron-based scheduling and a network-boundary credential vault to Claude Managed Agents, removing two common DIY infrastructure headaches.
Developer Tools & APIs
ClaudeForFoundationModels: Anthropic's Swift package brings Claude into Apple's Foundation Models framework
Anthropic's new Swift package lets iOS/macOS 27 developers use Claude as a drop-in server-side model via Apple's LanguageModelSession API.
Developer Tools & APIs
Claude Code Gets Push Notifications, Fullscreen TUI, and Smarter Session Resume
Five focused updates to Claude Code: mobile push notifications, /tui fullscreen mode, PR URL resume, Bedrock tier control, and project purge.
Developer Tools & APIs
Anthropic Claude API: Zero-Cost Refusals and a Smarter Advisor Tool for Agentic Pipelines
Anthropic now bills zero for API refusals with no output, and the advisor tool gets a max_tokens cap to control cost and latency in agentic workloads.
Developer Tools & APIs
Claude Code v2.1.160: Faster auto mode, fewer CI headaches, and a raft of bug fixes
Claude Code v2.1.160 cuts auto mode classifier latency, fixes Bedrock/Vertex/Foundry CI failures, and resolves Bazel, OneDrive, CJK, and voice mode bugs.
Developer Tools & APIs
Claude Code v2.1.163: Version Guardrails, Plugin Management, and a Sweep of Windows Fixes
Claude Code's latest release adds enterprise version enforcement, a /plugin list command, hook improvements, and fixes a pile of Windows and terminal rendering issues.
Agents & Automation
Claude now writes more than 80% of Anthropic's code — and the company warns recursive self-improvement may be closer than anyone expected
Anthropic reveals Claude authored 80%+ of its merged codebase by May 2026 and calls for international coordination before AI can fully design its own successors.
Workplace AI
KPMG embeds Claude across its entire global workforce — and gets exclusive rights to bring it to tax clients
KPMG and Anthropic's global alliance gives all 276,000 staff Claude access inside the Digital Gateway platform, with a strategic focus on tax and private equity.
Cloud & Infrastructure
Anthropic adds a tiered Services Track and daily-refreshed Partner Hub to the Claude Partner Network
Anthropic's new three-tier Services Track and Partner Hub give enterprises a credentialed way to find qualified Claude implementation partners.
Consumer AI
Anthropic commits to keeping Claude ad-free — and explains exactly why
Anthropic has permanently ruled out advertising in Claude, arguing ad-based incentives are structurally incompatible with a trustworthy AI assistant.
Security & Governance
Anthropic tracked 832 malicious accounts for a year. The MITRE ATT&CK framework can't fully describe what it found.
Anthropic's Frontier Red Team mapped 13,873 real attacks to MITRE ATT&CK — and found the framework has no ID for the autonomous agentic behavior defining the highest-risk actors.
Developer Tools & APIs
Claude Code: 'workflow' renamed to 'ultracode', parallel Bash bug fixed, and OTEL team-level metrics added
Claude Code renames its dynamic-workflow trigger to 'ultracode', fixes a Bash parallel batch bug, tidies the MCP panel, and adds OTEL resource-attribute labels.
Developer Tools & APIs
Claude Code Now Auto-Loads Plugins from Local Directories — No Marketplace Required
Claude Code gains filesystem-first plugin loading from .claude/skills, a scaffolding command, autocomplete, and hot-reload — no marketplace needed.
Security & Governance
Anthropic expands Project Glasswing to 150 new organisations across critical infrastructure — and launches Claude Security for everyone
Anthropic brings Claude Mythos Preview to ~150 new orgs in 15+ countries covering power, water, healthcare and more, plus launches Claude Security in public beta.
Models & Assistants
Anthropic Files Confidential IPO Papers with the SEC, Targeting a Trillion-Dollar Debut
Anthropic has submitted a confidential S-1 to the SEC, setting up a potential October 2026 IPO at a valuation above $1 trillion.
Cloud & Infrastructure
Anthropic raises $65 billion at a $965 billion valuation — and what that means for anyone using Claude
Anthropic closes a record $65B Series H at a $965B valuation, overtaking OpenAI as the world's most valuable private AI company.
Agents & Automation
Claude Code's Dynamic Workflows let hundreds of AI agents tackle your biggest coding jobs in parallel
Anthropic's Dynamic Workflows for Claude Code orchestrate up to 1,000 subagents per run, handling massive migrations and audits that previously took weeks.
Models & Assistants
Claude Opus 4.8 is here: faster, smarter, and significantly better at the work that matters
Anthropic's Claude Opus 4.8 brings stronger coding, agentic tasks, and professional workflows — at the same price as its predecessor.
Security & Governance
Claude Mythos Preview found 10,000+ critical vulnerabilities in one month. Here's what that actually means.
Anthropic's Project Glasswing used Claude Mythos Preview to find over 10,000 high or critical vulnerabilities across critical software in just one month.
Developer Tools & APIs
Anthropic Acquires Stainless: What It Means for Developers Building on Claude
Anthropic has acquired Stainless, the startup behind every official Claude SDK and MCP server generator, in a deal reportedly worth over $300M.
Cloud & Infrastructure
Anthropic Launches the Claude Partner Network with $100 Million to Back Enterprise AI Deployments
Anthropic is committing $100M and a fivefold team expansion to a new partner program helping enterprises adopt Claude at scale.
Models & Assistants
Anthropic launches Claude Opus 4.6 with 1M token context, agent teams, and top benchmark scores
Anthropic's new flagship model brings a 1M token context window, multi-agent coordination, and state-of-the-art results on coding and reasoning benchmarks.
Agents & Automation
Claude Code comes to Slack: tag @Claude in a thread and get back a pull request
Anthropic's Claude Code now integrates with Slack, letting teams trigger full coding sessions from chat threads and receive completed PRs without leaving the app.