FlagshipAnthropic

Claude 3.5 Sonnet

Claude 3.5 Sonnet is Anthropic's flagship multimodal model with strong coding and reasoning capabilities, featuring a 200K token context window and vision support.

Context 200K
Tier Flagship
Knowledge Apr 2024
Tools Supported
Modalities text, image
Input from
$1.50 / 1M tokens
across 1 provider
Compare PricesModel Page →API Docs

API Pricing

Cheapest on Amazon AWS — 33% below avg
ProviderInput / 1MOutput / 1MUpdated
Amazon AWS logo
Amazon AWSBatch
$1.50$7.504/14/2026
Amazon AWS logo
Amazon AWS
$3.00$15.004/14/2026

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

Model Details

General

Creator
Anthropic
Family
Sonnet
Tier
Flagship
Context Window
200K
Knowledge Cutoff
Apr 2024
Modalities
Text, Image

Capabilities

Tool Calling
Yes
Open Source
No
Subtypes
Chat Completion, Code Generation

Strengths & Limitations

  • 200,000 token context window enables processing of long documents and conversations
  • Multimodal capabilities support both text and image inputs
  • Tool calling functionality with structured output support
  • Strong performance in code generation and debugging tasks
  • Constitutional AI training approach emphasizes helpful and harmless responses
  • Relatively recent knowledge cutoff of April 2024
  • Chat completion and code generation optimizations
  • Proprietary model with no open-source weights available
  • No video or audio input support, limited to text and images
  • Knowledge cutoff may be older than some competing models
  • No fine-tuning options available for custom use cases
  • Limited to Anthropic's API ecosystem

Key Features

•200K token context window
•Vision input (image processing)
•Tool calling with structured output
•Chat completion API
•Code generation and debugging
•Streaming responses
•JSON mode output formatting
•Constitutional AI safety features

About Claude 3.5 Sonnet

Claude 3.5 Sonnet is Anthropic's flagship model in the Sonnet family, designed for complex reasoning, coding, and multimodal tasks. As a proprietary large language model, it represents Anthropic's current top-tier offering for sophisticated AI applications requiring high performance across diverse domains. The model features a 200,000 token context window and supports both text and image inputs, making it suitable for multimodal workflows. Claude 3.5 Sonnet includes tool calling capabilities and demonstrates strong performance in code generation, mathematical reasoning, and complex text analysis tasks. Its knowledge cutoff is April 2024, providing relatively current information for most applications. Claude 3.5 Sonnet competes directly with other flagship models like GPT-4 and is commonly deployed for applications requiring reliable reasoning, content creation, and code assistance. Organizations use it for tasks ranging from research assistance to software development support, taking advantage of its large context window for processing extensive documents or codebases.

Common Use Cases

Claude 3.5 Sonnet is well-suited for complex reasoning tasks, software development, research assistance, and content creation workflows. Its large context window makes it particularly effective for analyzing long documents, processing extensive codebases, and maintaining context across lengthy conversations. The multimodal capabilities enable applications involving document analysis with charts and diagrams, code review with screenshots, and educational content creation. Organizations commonly deploy it for customer support automation, technical writing, data analysis, and as an AI assistant for knowledge workers requiring reliable reasoning and code generation capabilities.

Frequently Asked Questions

How much does Claude 3.5 Sonnet cost per million tokens?

Claude 3.5 Sonnet pricing varies by provider and may include different rates for input versus output tokens. Check the pricing table above for current rates across all available providers offering Claude 3.5 Sonnet access.

What is Claude 3.5 Sonnet best used for?

Claude 3.5 Sonnet excels at complex reasoning tasks, software development, research assistance, and multimodal analysis. Its 200K context window makes it particularly effective for processing long documents, analyzing extensive codebases, and maintaining context in lengthy conversations or research sessions.

Does Claude 3.5 Sonnet support function calling and tool use?

Yes, Claude 3.5 Sonnet includes tool calling capabilities with support for structured output formatting. This enables integration with external APIs, databases, and custom functions, making it suitable for agentic applications and workflow automation.