Tag: Anthropic
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How Claude Learns to Refuse Without Being Told
Claude refuses requests it was never told to refuse. There is no hardcoded list of banned words, no simple keyword filter running behind the scenes. Instead, Anthropic built a system where the model teaches itself which outputs are harmful — and the process is far stranger than most people assume. Key Facts Most People Don’t…
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How Prompt Caching Cuts AI Costs by 90%
The 90% Discount Most API Users Never Claim Anthropic’s cache cuts API costs by 90% — yet most developers sending requests to Claude, GPT, or Gemini have never configured it. Prompt caching, which Anthropic launched in July 2024, reduces input token costs from $3 per million to $0.30 per million for cached portions on Claude…
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How MCP Servers Exchange Tools With Claude
Claude doesn’t actually call your tools directly. When you type a message in Claude Desktop and it responds by reading a file, querying a database, or hitting an API, there’s an entire protocol running behind the scenes that brokers every single tool call. That protocol is the Model Context Protocol (MCP), and understanding how it…