Anthropic released Claude Haiku 4.5, the small/fast tier of the Claude 4 family.
Claude API · Official · Oct 15, 2025
Claude API provides secure, scalable programmatic access to the family of Claude large language models from Anthropic. It is designed for developers and organizations that want to integrate cutting-edge generative AI for tasks like content creation, summarization, coding assistance, and knowledge work into their applications or workflows. The Claude API offers multiple model options tailored to different speed, cost, and performance needs, through a reliable and compliant cloud platform.
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.