Anthropic API

Direct API access to Claude, Anthropic's family of AI models known for being helpful, harmless, and honest. The API serves developers building applications that need strong reasoning, careful instruction following, and nuanced content generation — from chatbots to complex analysis pipelines.

• Claude model family — access to Sonnet, Opus, and Haiku at different price/performance points • Extended context — up to 200K token context windows for processing long documents • Tool use — Claude can call external functions and APIs during conversations • Vision — analyze and describe images alongside text inputs • System prompts — customize Claude's behavior for specific applications • Streaming — real-time token streaming for responsive user experiences

Pay-per-token pricing. Claude Sonnet from $3/$15 per million input/output tokens.