Claude 3.7 Sonnet is Anthropic's latest hybrid reasoning model, designed to tackle complex tasks requiring both rapid inference and detailed problem-solving. It introduces a dual-mode operation, combining standard language generation with extended thinking capabilities.
Claude 3.7 Sonnet is engineered for a wide range of applications, including:
The model supports multiple languages, enhancing its usability across different regions and demographics.
Claude 3.7 Sonnet is built on a transformer-based architecture, incorporating advancements in hybrid reasoning and extended thinking capabilities. The model utilizes a dual-mode operation system, allowing it to switch between standard language generation and more computationally intensive reasoning processes.
November, 2024
Claude 3.7 Haiku has demonstrated impressive performance metrics:

The model is available on the AI/ML API platform as "Claude 3.7 Sonnet" .
Detailed API Documentation is available here.
Anthropic has implemented safeguards in Claude 3.7 Sonnet, including automatic encryption of sensitive information in the model's thought process outputs.
Claude 3.7 Sonnet is released under a commercial license that allows both commercial and non-commercial usage rights while ensuring compliance with ethical standards.
Try Claude 3.7 Sonnet API here.
OpenAI-compatible — swap the base URL and it works with your existing SDK.
| Type | Price |
|---|---|
| Input | |
| Output | |
| Benchmark | Score | What it measures | Source | Retrieved |
|---|---|---|---|---|
| Intelligence | 17.7 | Composite score across standardised reasoning, knowledge and problem-solving evaluations, measured independently by Artificial Analysis | Source | September 12, 2026 |
| Coding | 36.4 | Composite score across standardised coding evaluations, measured independently by Artificial Analysis | Source | September 12, 2026 |
| Math | 56.3 | Composite score across standardised mathematics evaluations, measured independently by Artificial Analysis | Source | September 12, 2026 |
| Model | Input | Output | Context | Best for |
|---|---|---|---|---|
Claude 3.7 Sonnet This page | ||||
| Reasoning + agents | ||||
| Balanced coding + agents | ||||
| Long-context, multimodal & agentic workflows | ||||
| Reasoning + agents |
Yes, Claude 3.7 Sonnet can stream responses as they are generated.
Yes, Claude 3.7 Sonnet supports both function calling and structured outputs.
Claude 3.7 Sonnet was built by Anthropic.