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Anthropic API
API access to Claude models for building AI applications
Overview
The Anthropic API provides developer access to Claude models for building AI applications. Features include tool use, vision, long context windows, and the Messages API.
Features
Claude 4 models
200K context window
Tool use / function calling
Vision (image input)
Streaming responses
Batches API
How to Get Started
Sign up at console.anthropic.com. Get an API key and install the SDK: pip install anthropic or npm install @anthropic-ai/sdk.
Pricing
Pay per token
View pricing detailsFAQ
How does Claude compare to GPT-4?
Claude excels at long-form content, instruction following, and safety. Both are top-tier models with different strengths.