Claude Sonnet 4.5
Anthropic's Claude Sonnet 4.5 is a chat model capable of handling various tasks, including computer use, extended thinking, and reasoning, with support for multiple input formats such as image, PDF, and text. It is genuinely best at tasks that require a combination of natural language understanding and external functionality, such as function calling and system prompts.
Input
Output
Context
1000K
Max Output
64K
Parameters
-
Technical Specifications
Model TypeChat
Context Window1,000,000 tokens
Max Output Tokens64,000 tokens
ParametersNot available
Release DateSep 29, 2025
Training CutoffJan 31, 2025
Licenseproprietary
Open SourceNo
Input Modalities
ImageText
Output Modalities
Text
Capabilities
Resources & Links
proprietary, Proprietary - API access only
Related Tools
Data sourced from official provider APIs and documentation
Last updated: Jun 23, 2026
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