Claude Sonnet 4.5
OpenRouter
The Claude Sonnet 4.5 AI model by OpenRouter offers developers a powerful tool with a massive context window of 1,000,000 tokens and advanced reasoning capabilities. With support for text input, vision, and function calling, this model is ideal for complex tasks requiring deep understanding and nuanced responses. Accessible at $3/M input and $15/M output tokens, the Claude Sonnet 4.5 is a cost-effective solution for projects demanding cutting-edge AI technology.
Key Specifications
Context Window
1.0M tokens
Max Output Tokens
64K tokens
Input Pricing
$3.00
per million tokens
Output Pricing
$15.00
per million tokens
Capabilities
- Text Generation
- Vision
- Function Calling
- Advanced Reasoning
- File Attachments
Additional Details
- Provider
- OpenRouter
- Release Date
- September 29, 2025
- Advanced Reasoning
- Supported
- Supported Input Types
- text, image