Anthropic released Claude Haiku 4.5, the small/fast tier of the Claude 4 family.
Claude API · Official · Oct 15, 2025
The Claude API by Anthropic provides developers with programmatic access to Claude's advanced AI models, enabling integration of natural language understanding, generation, and conversational capabilities into applications and workflows. It is suitable for businesses, researchers, and developers looking to leverage cutting-edge AI for a variety of use cases including chatbots, content creation, coding assistance, customer support, and more. Robust API documentation and ecosystem support facilitate quick development and deployment.
Anthropic released Claude Haiku 4.5, the small/fast tier of the Claude 4 family.
Claude Sonnet 4.5: mid-tier Anthropic model, stronger at coding and agentic tool use.
Anthropic released Claude Opus 4 alongside Sonnet 4, marking the start of the Claude 4 family.
Comprehensive guides and reference material for using the Claude API effectively.
Insights and updates on the Claude API, including use cases and best practices.
Details on the pricing structure for using the Claude API.