Anthropic’s Published Claude System Prompts Now Cover Fable 5
Anthropic’s ongoing system-prompt changelog now documents instructions for Claude Fable 5 and Opus 5, revealing how the company steers agentic behavior in its newest models.
#ClaudeAi
Explore AIstify's latest reporting, research, and expert analysis tagged with "claude ai", collected in one continuously updated archive.
Related Posts
Anthropic Builds Its Economic Research Directly Into Claude
Anthropic has launched the Anthropic Economic Index connector for Claude, allowing users to query real-world AI usage data directly through conversation. The connector is available now in claude.ai and works across all Claude models with no installation required.
Model Context Protocol (MCP) Explained: a Beginner’s Guide
A beginner’s guide to Model Context Protocol (MCP) – an open standard that connects AI models to external tools and data sources, forming the backbone of modern AI agents.
Anthropic Will Pay $1.5 Billion to Authors Whose Books Trained Claude
By
Samantha Reed
• 4 mins read
A federal judge gave final approval to Anthropic’s $1.5 billion settlement with authors over pirated books used to train Claude, the largest copyright recovery on record.
Anthropic’s Doom-Themed Claude Ad Backfires and Draws Mockery
By
Samantha Reed
• 3 mins read
Anthropic’s new ad “There’s hope in hard questions” drew mockery, including from Sam Altman, for pairing bleak imagery like a cemetery with questions about whether AI can be trusted.
Microsoft Coaches Its Sales Team to Take Down OpenAI and Anthropic
By
Samantha Reed
• 4 mins read
Microsoft is coaching its sales force to argue its AI products beat OpenAI’s and Anthropic’s on cost, security and completeness, turning on the partners whose models it long relied on.
Anthropic Launches Free Claude for Teachers With K-12 Curriculum Access
By
Samantha Reed
• 2 mins read
Anthropic has launched Claude for Teachers, giving verified U.S. K-12 educators free access to premium Claude features, a library of teaching skills, and connections to standards-aligned curricula across all 50 states.
Anthropic Billing Tried to Charge a Free User $16.6 Million
By
Samantha Reed
• 4 mins read
A South Korean developer says Anthropic’s billing system tried to charge him $16.6 million despite being on the free plan with zero API usage, one of several billing complaints.
Anthropic Adds Reflect, a Dashboard for How You Use Claude
By
Samantha Reed
• 4 mins read
Anthropic launched Reflect, a beta dashboard that shows users how they use Claude and nudges them toward healthier habits, a rare feature that can encourage using the product less.
Anthropic Tested How AI Agents Negotiate and Trade Among Themselves
By
Maria Konash
• 3 mins read
Anthropic ran an internal experiment where AI agents negotiated and closed real-world transactions between employees. The results show stronger models secure better deals, often without users noticing.
The AI Coding Arms Race: Anthropic and OpenAI Trade Releases Minutes Apart
By
Daniel Mercer
• 3 mins read
Anthropic released Opus 4.6 with new agent team capabilities, while OpenAI quickly followed with a more advanced Codex model, underscoring intensifying competition in AI-powered software development.
Claude AI Brings Slack, Figma, and Canva Into Chat
By
Samantha Reed
• 3 mins read
Anthropic’s Claude AI now allows users to interact directly with workplace tools like Slack, Figma, and Canva inside the chat interface. The update aims to reduce context switching and make collaboration more visible and interactive.
Anthropic CEO Warns Half of Junior Workers Could Lose Jobs to AI Within Five Years
By
Samantha Reed
• 1 min read
Anthropic CEO Dario Amodei says AI advances could leave half of junior employees jobless within five years, urging governments to prepare for rapid labor disruption.