Claude (language model)
Also known as Claude - Anthropic, Anthropic’s Claude, Claude 2, Claude Instant, Claude 2.1, claude.ai, Claude AI
Claude is a series of large language models developed by Anthropic and first released in 2023. Since Claude 3, each generation has typically been released in three sizes, from least to most capable: Haiku, Sonnet, and Opus. An additional model named Claude Mythos was released to some companies in 2026 but not to the public.
Wikipedia views (30d)
308,444 totalvia Wikimedia Pageviews API
Key facts
- Developer
- Anthropic
- Initial release
- March 2023 ; 3 years ago ( 2023-03 )
- Stable release
- Claude Opus 4.8 /, May 28, 2026 ; 6 days ago ( 2026-05-28 ) , Claude Sonnet 4.6 /, February 17, 2026 ; 3 months ago ( 2026-02-17 ) , Claude Haiku 4.5 /, October 15, 2025 ; 7 months ago ( 2025-10-15 )
- Platform
- Cloud computing platforms
- Type
- Large language model Chatbot Generative pre-trained transformer Foundation model
- License
- Proprietary
- Website
- claude .ai
via Wikipedia infobox
Wikidata facts
- Official website
- www.anthropic.com/claude
~21 min read
Article
Claude is a series of large language models developed by American software company Anthropic. Claude was released as an AI-based chatbot in March 2023. It is also used in AI-assisted software development.
Claude is trained using "constitutional AI", a technique developed by Anthropic to improve ethical and legal compliance (AI alignment). Since Claude 3, each generation has typically been released in three sizes, from least to most capable: Haiku, Sonnet, and Opus. An additional model named Claude Mythos was released to a handful of companies in 2026.