claude.com · Model APIs
Programmatic access to Claude models, including tool use, prompt caching, batch processing and computer use capabilities.
Anthropic API is one of 6 model API tools on Intelsi. See all model API tools or how we check facts.
// guides
Is Anthropic API free? Keys are free and new users get a small test credit, but Claude API calls are prepaid per token. Prices, plan credits, student options.
Claude Duet explained: what Anthropic's proactive agent does, who can join the waitlist, what it costs on Pro and Max, its safety limits and how it compares.
Is the xAI API free? Keys and the Playground are free, but Grok API calls use prepaid credits. Current xAI API prices, rate limits and how to get started.
Muse Wonder explained: what Meta launched on Oct 12, 2026, Wonder vs Wonder Full, API pricing, Muse Code plans, and how it compares with Muse Spark and Claude.
What is an LLM API key? A plain English guide to API keys for OpenAI, Claude, Gemini and Grok: how they work, how billing attaches and how to keep one safe.
Compare free OpenAI API alternatives in 2026: Google AI Studio's free Gemini API, Anthropic signup credits, xAI's free Playground, and OpenAI's own free options.
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