Claude 4 - Anthropic’s best publicly available model (may 22, 2025 – 3 h, oct 10, 2025 y)
Description:
Anthropic launches the Claude 4 model family, introducing Claude Opus 4 and Claude Sonnet 4. These next-generation AI models bring major improvements in coding, reasoning, and long-context task execution. Claude Opus 4, targeted at complex, extended use cases, demonstrated advanced autonomy—successfully completing tasks like a multi-hour code refactor for Rakuten. Claude Sonnet 4 offers a balanced, efficient option for broader use. Both models support tool use during reasoning and improved memory when interacting with user files.Added to timeline:
Date:
may 22, 2025
3 h, oct 10, 2025 y
~ 4 months and 21 days