Claude 3.7 Sonnet
The first hybrid reasoning model combining instant responses with extended, controllable thinking for coding and complex engineering tasks.
Preview
Problem
Developers previously had to choose between fast models (for autocomplete/chat) and slow pure-reasoning models without control over budget.
Solution
A hybrid reasoning architecture that allows users and developers to dial in exact thinking token budgets for complex coding and math problems.
Challenge
Balancing standard conversational tone with deep architectural problem solving in a single weights checkpoint.
Key Features
- Controllable thinking tokens
- World-class coding benchmarks
- 200K context window
- Deep integration with Claude Code CLI
Tech Choices
Target User
Software Architects, Senior Engineers, and Product Builders.
Impact
"Established the gold standard for AI coding agents and autonomous problem-solving."
How to Use
Open Claude
Visit claude.ai or use Anthropic's Messages API.
Enable Extended Thinking
Toggle Extended Thinking in the web interface or provide the 'thinking' parameter in API calls.
Execute Complex Tasks
Paste entire code repositories or complex architecture specs to receive verified solutions.
Quick Details
- Pricing
- Freemium
- Platforms
- Web, API
- Updated
- 8/19/2026