Anthropic has launched Claude Opus 4 and Claude Sonnet 4, the latest AI models focused on advanced coding, reasoning, and agentic workflows
Claude Opus 4 is positioned as Anthropic’s most powerful model, excelling at complex coding, research synthesis, and long-duration autonomous tasks
Opus 4 can independently operate for up to seven hours, making it suitable for sophisticated AI agents and deep research problems
Claude Sonnet 4 is a mid-tier model offering a balance of cost and performance, with improved coding, reasoning, and a 65% reduction in “reward hacking” compared to its predecessor
Both models support hybrid reasoning, offering instant responses and an “extended thinking” mode for deeper, more accurate solutions
New Developer Mode provides access to detailed reasoning sequences, and both models can summarize their thought process for transparency
The models can create “memory files” by extracting and storing key information from local files, enhancing continuity for long-term projects