Claude (language model)

Claude
Developer(s)Anthropic
Initial releaseMarch 2023 (2023-03)
Stable release
Claude 4 Opus /
May 22, 2025 (2025-05-22)
Claude 4 Sonnet /
May 22, 2025 (2025-05-22)
Type
LicenseProprietary
Websiteclaude.ai

Claude is a family of large language models developed by Anthropic.[1] 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.[2] Claude 4, which includes Opus and Sonnet, was released in May 2025.[3]

  1. ^ "What is Claude AI?". IBM. September 24, 2024.
  2. ^ Cite error: The named reference Whitney-2024 was invoked but never defined (see the help page).
  3. ^ Fried, Ina (May 23, 2025). "Anthropic's new AI model shows ability to deceive and blackmail". Axios. Retrieved May 25, 2025.

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