Claude 4

Overview

Claude 4 represents Anthropic's frontier model line, known for its constitutional AI approach, strong safety guarantees, and exceptional code understanding. The Opus variant targets complex reasoning while Sonnet balances speed and capability. Particularly strong at nuanced analysis, creative writing, and ethical reasoning.

Capabilities

• ▸Constitutional AI with safety alignment
• ▸Exceptional code understanding and generation
• ▸Nuanced ethical reasoning
• ▸Long-document analysis (200K context)
• ▸Creative and literary writing
• ▸Structured output with XML/JSON

Use Cases

• →Code review with security analysis
• →Content moderation and safety
• →Long-document summarization
• →Creative writing assistance
• →Legal and compliance analysis

Version Breakdown