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What is Claude Sonnet 4?

Claude Sonnet 4 is a breakthrough AI model, refining the strengths of Claude Sonnet 3.7 and delivering impressive results across software engineering tasks, coding, and advanced reasoning. With a robust 72.7% on SWE-bench, Sonnet 4 demonstrates remarkable improvements in handling complex tasks, clearer reasoning, and more effective code optimization. The model’s ability to execute complex instructions with higher accuracy and navigate intricate codebases with fewer errors makes it indispensable for developers. Whether for app development or addressing sophisticated software engineering challenges, Sonnet 4 balances performance and efficiency, offering an optimal solution for enterprises and individual developers seeking high-quality AI assistance.

What is Claude Opus 4.1?

Claude Opus 4.1 marks a significant iterative improvement over its earlier version, Claude Opus 4, with a focus on enhancing capabilities in coding, agentic reasoning, and data analysis while keeping deployment straightforward. This latest iteration achieves a remarkable coding accuracy of 74.5 percent on the SWE-bench Verified, alongside improved research depth and detailed tracking for agentic search operations. Additionally, GitHub has noted substantial progress in multi-file code refactoring, while Rakuten Group highlights its proficiency in pinpointing precise corrections in large codebases without introducing errors. Independent evaluations show that the performance of junior developers has seen an increase of about one standard deviation relative to Opus 4, indicating meaningful advancements that align with the trajectory of past Claude releases. Opus 4.1 is currently accessible to paid subscribers of Claude, seamlessly integrated into Claude Code, and available through the Anthropic API (model ID claude-opus-4-1-20250805), as well as through services like Amazon Bedrock and Google Cloud Vertex AI. Moreover, it can be effortlessly incorporated into existing workflows, needing only the selection of the updated model, which significantly enhances the user experience and boosts productivity. Such enhancements suggest a commitment to continuous improvement in user-centric design and operational efficiency.

Media

Media

Integrations Supported

Amazon Bedrock
Bash
C++
CSS
Claude
Go
HTML
Java
JavaScript
Kotlin
Node.js
PHP
Python
React
SQL
TypeScript
Vertex AI
BLACKBOX AI
Bind AI
Claude Code

Integrations Supported

Amazon Bedrock
Bash
C++
CSS
Claude
Go
HTML
Java
JavaScript
Kotlin
Node.js
PHP
Python
React
SQL
TypeScript
Vertex AI
BLACKBOX AI
Bind AI
Claude Code

API Availability

Has API

API Availability

Has API

Pricing Information

$3 / 1 million tokens (input)
Free Trial Offered?
Free Version

Pricing Information

Pricing not provided.
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

Anthropic

Date Founded

2021

Company Location

United States

Company Website

claude.ai

Company Facts

Organization Name

Anthropic

Date Founded

2021

Company Location

United States

Company Website

www.anthropic.com/news/claude-opus-4-1

Categories and Features

Categories and Features

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