Claude is a family of large language models developed by Anthropic. The
first model was released in March 2023.
The Claude 3 family, released in March 2024, consists of three models: Haiku,
optimized for speed; Sonnet, which balances capability and performance; and
Opus, designed for complex reasoning tasks. These models can process both text
and images, with Claude 3 Opus demonstrating enhanced capabilities in areas
like mathematics, programming, and logical reasoning compared to previous
versions. Claude 4, which includes Opus and Sonnet, was released in May 2025.
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