Balanced intelligence and speed. Strong reasoning with faster response times and lower cost than Opus.
Undisclosed
Parameters
200K tokens
Context Window
Proprietary
License
Jun 1, 2025
Released
💰 Pricing
Input
$3
per 1M tokens
Output
$15
per 1M tokens
⚡ Strengths
🎯 Use Cases
API Available
This model is accessible via API for integration into your applications.
🛠️ Tools Built on Claude 4 Sonnet
Cursor
Anysphere
AI-first code editor built on VS Code. Tab completion, inline chat, and multi-file editing powered by frontier models.
Claude Code
Anthropic
Anthropic's agentic coding CLI. Autonomous multi-file editing, terminal commands, and full codebase understanding.
Bolt.new
StackBlitz
AI-powered full-stack web app builder in the browser. Generates, runs, and deploys React/Next.js/Node apps instantly.
Claude.ai
Anthropic
Anthropic's AI assistant. Known for nuanced writing, long-context analysis, and thoughtful responses.
Cline
Cline (Community)
Autonomous AI coding agent for VS Code. MCP support, browser control, and multi-step task execution.
Anthropic MCP
Anthropic
Model Context Protocol — open standard for connecting AI to tools, data sources, and systems.
⭐ Related Models
Claude 4 Opus
Anthropic
Anthropic's most powerful reasoning model with extended thinking. Excels at complex analysis, multi-step math, advanced coding, and nuanced writing.
Claude 3.5 Sonnet
Anthropic
The model that defined a generation. Fast, smart, and incredibly capable across coding, analysis, and creative tasks.
Claude 3.5 Haiku
Anthropic
Ultra-fast and cost-effective. Best for high-volume tasks where speed matters more than peak intelligence.