Claude 4 - Anthropic’s best publicly available model (may 22, 2025 – nov 23, 2025)
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
nov 23, 2025
~ 6 months