FlagshipAnthropic

Claude Opus 4.1

Claude Opus 4.1 is Anthropic's flagship multimodal AI model with text and image capabilities, featuring a 200K token context window for complex reasoning tasks.

Context 200K
Tier Flagship
Modalities text, image
Input from
$15.00 / 1M tokens
across 2 providers
Compare PricesModel Page →API Docs

API Pricing

ProviderInput / 1MOutput / 1MUpdated
Amazon AWS logo
Amazon AWS
$15.00$75.004/14/2026
OpenRouter logo
OpenRouter
$15.00$75.004/14/2026

Prices updated daily. Last check: 4/14/2026

Model Details

General

Creator
Anthropic
Family
Opus
Tier
Flagship
Context Window
200K
Modalities
Text, Image

Capabilities

Tool Calling
No
Open Source
No

Strengths & Limitations

  • 200,000 token context window enables processing of extensive documents and conversations
  • Multimodal capabilities support both text and image inputs
  • Flagship-tier model designed for complex reasoning and analysis tasks
  • Strong performance on comprehension and analytical tasks
  • Large context window suitable for extensive code review and document analysis
  • Anthropic's constitutional AI training methodology for helpful and harmless responses
  • No tool calling or function calling capabilities
  • Proprietary model with no open-source availability
  • Superseded by newer Opus family models like Claude Opus 4.6
  • Limited to text and image modalities only
  • Higher computational requirements typical of flagship-tier models

Key Features

•200,000 token context window
•Text and image input processing
•Multimodal understanding and analysis
•Long-form document processing
•Complex reasoning capabilities
•Streaming response support
•Constitutional AI safety training
•Large-scale text generation and analysis

About Claude Opus 4.1

Claude Opus 4.1 is Anthropic's flagship AI model in the Opus family, positioned as their most capable offering for complex reasoning and multimodal tasks. As a proprietary model, it represents Anthropic's top-tier capabilities in natural language processing and understanding. The model supports both text and image inputs with a 200,000 token context window, enabling it to process lengthy documents, codebases, and visual content in a single session. While it lacks tool calling functionality, Claude Opus 4.1 focuses on advanced reasoning, analysis, and comprehension across multiple modalities. The model excels at tasks requiring deep understanding and complex problem-solving. Claude Opus 4.1 serves organizations needing sophisticated AI capabilities for research, analysis, and content creation. However, it occupies an intermediate position within the Opus family, as newer versions like Opus 4.6 have since been released with additional capabilities and improvements.

Common Use Cases

Claude Opus 4.1 is designed for complex analytical workloads that require deep reasoning and multimodal understanding. Its 200K token context window makes it suitable for comprehensive document analysis, extensive code reviews, research synthesis, and long-form content creation. Organizations use it for tasks like legal document analysis, academic research, technical writing, and complex problem-solving that benefit from the model's flagship-tier reasoning capabilities. The combination of text and image processing makes it valuable for analyzing reports with visual elements, reviewing presentations, and handling mixed-media content that requires sophisticated understanding.

Frequently Asked Questions

How much does Claude Opus 4.1 cost per million tokens?

Claude Opus 4.1 pricing varies by provider and may differ for input versus output tokens. Check the pricing table above for current rates across all available providers.

What is Claude Opus 4.1 best used for?

Claude Opus 4.1 excels at complex reasoning tasks, document analysis, and multimodal content processing. Its 200K context window makes it ideal for analyzing lengthy documents, code reviews, research synthesis, and tasks requiring deep analytical thinking across text and image inputs.

How does Claude Opus 4.1 compare to newer Opus models?

Claude Opus 4.1 lacks some capabilities found in newer Opus family models, most notably tool calling functionality. While it maintains strong reasoning and multimodal capabilities with a 200K context window, newer versions like Claude Opus 4.6 offer additional features and improvements for modern AI applications.