Anthropic Cuts Claude Code's System Prompt by 80% for Newer Models
Anthropic says it removed more than 80% of Claude Code's system prompt for its Opus 5 and Fable 5 models, betting that newer models need less scripted guidance, not more.
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81 articles
What Is the Claude Security Plugin — and How Does It Work?
Claude Security is Anthropic's plugin that scans a codebase with a team of AI agents to find and help fix vulnerabilities. Here's what it is and how a scan actually runs.
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What Is Claude Opus 5? Anthropic's Cheaper Frontier AI Model
Claude Opus 5 is Anthropic's new mid-tier AI model — nearly matching flagship Fable 5's performance at half the token price. Here's what it is and what it costs.
Read more →Anthropic Launches Claude Opus 5, Rivaling Fable 5 at Half Cost
Anthropic released Claude Opus 5 on July 24, pairing near-flagship coding and agent performance with Claude Fable 5's results at roughly half the cost, plus gains in science and finance tasks.
Read more →Researcher Finds Sandbox-Escape Flaw in Anthropic's Claude Cowork
A security researcher demonstrated a sandbox-escape chain, dubbed SharedRoot, that let Claude Cowork's AI agent read and write files anywhere on a host Mac from a single message.
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What Is Claude Fable 5? Anthropic's Flagship AI Model, Explained
Claude Fable 5 is Anthropic's most capable publicly available AI model. Here's what it is, how it differs from Claude Mythos 5, and what it costs to use.
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What Is Computer Use — How AI Agents Control Your Screen
Computer use lets an AI model see a screenshot and directly operate a mouse and keyboard. Here is what it is, how it works, and its real risks and costs.
Read more →Claude Fable 5 Helps Disprove 87-Year-Old Jacobian Conjecture
Anthropic mathematician Levent Alpöge used Claude Fable 5 to find a counterexample to the 1939 Jacobian conjecture, and mathematicians including Terence Tao independently verified it within days.
Read more →Anthropic Adds 'Record a Skill' to Claude Cowork
Claude Cowork can now turn a narrated screen recording of a task into a reusable skill, letting Pro, Max, and Team users automate workflows without writing a prompt.
Read more →Judge Grants Final Approval to Anthropic's $1.5B Book Piracy Settlement
A federal judge finalized Anthropic's $1.5 billion settlement with authors over pirated training books, the largest copyright class-action payout in US history.
Read more →Anthropic Reverses Fable 5 Cutoff for Max, Team Premium
Anthropic will keep Fable 5 included in Claude Max and Team Premium plans at half the usual limits starting July 20, reversing a plan to drop it from subscriptions; Pro and Team Standard users move to per-token billing.
Read more →What Is AI Chatbot Memory — and How Do You Control It?
ChatGPT, Claude, and Gemini can now remember facts about you between conversations. Here's what that memory actually stores, and how to view, edit, or delete it.
Read more →Anthropic Recruits Monzo Co-Founder to Tackle Compute Crunch
Monzo co-founder Tom Blomfield is taking leave from Y Combinator to join Anthropic's compute team, as the AI lab races to secure the computing power it needs to keep scaling Claude.
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What Is Claude Artifacts — and How Do You Use It?
Claude Artifacts is a side-panel feature that turns a chat with Claude into a working app, document, or diagram you can edit and share. Here's how it works and how to start.
Read more →Anthropic Launches Claude for Teachers for US K-12 Educators
Anthropic is giving verified K-12 teachers in the US a free year of premium Claude access, curriculum-aligned lesson tools, and classroom integrations through June 2027.
Read more →Anthropic Adds Team Editing and Public Sharing to Claude Artifacts
Claude's Artifacts pages now support named editors, simpler public links open to anyone online, and creation via Claude Tag in Slack, according to Anthropic's documentation.
Read more →Innovative Eyewear Adds Claude AI to All Lucyd Smart Glasses
Nasdaq-listed Innovative Eyewear is rolling out free Claude AI access across its Lucyd smart eyewear lineup, letting wearers switch between Claude and ChatGPT mid-conversation.
Read more →UST Cuts Chip Validation Time 50–70% With Anthropic's Claude
UST, an engineering services firm serving chipmakers and manufacturers, says integrating Anthropic's Claude into its hardware validation platform cut test cycles by up to 70%.
Read more →What Is Constitutional AI — and How Does It Train Claude?
Constitutional AI is Anthropic's method for training Claude to follow a written set of principles by critiquing its own answers, instead of relying mainly on human-labeled examples.
Read more →What Is Claude Tag — and How Does It Work?
Claude Tag is Anthropic's AI teammate inside Slack — tag it with a task and it works asynchronously, then reports back in a thread. Here's how it works, what it costs, and how to start.
Read more →Anthropic Invites the Public to Submit Its Hardest Questions About AI
Anthropic is asking the public to submit its toughest concerns about AI and pledging to publicly track how it responds, backed by large-scale surveys of Americans and Claude users worldwide.
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