Claude 3.5 Sonnet

Available frontier

Anthropic's most capable model for complex reasoning and code generation

Released June 20, 2024

API Documentation View Provider

Context Window

200K

TTFT

N/A

Speed

N/A

Max Output

8,192

Training Cutoff

Apr 2024

Last tested: 2026-01-15

About

Claude 3.5 Sonnet delivers best-in-class performance on coding, analysis, and creative tasks. It features a 200K context window, computer use capabilities, and exceptional instruction following at a cost-effective price point.

Capabilities

vision computer-use function-calling streaming extended-thinking

Pricing

Input: $3.00/M
Output: $15.00/M

Live pricing Static pricing

Batch

$1.50/M input, $7.50/M output

per 1M tokens

Details

Overview

Claude 3.5 Sonnet represents the optimal balance between capability and cost in Anthropic’s model lineup. It excels at complex reasoning tasks, code generation, and multi-step analysis while maintaining fast response times suitable for production applications.

Key Strengths

Code Generation & Analysis: Claude 3.5 Sonnet consistently outperforms competitors on coding benchmarks including HumanEval, MBPP, and real-world code review tasks. It can understand entire codebases through its 200K context window.

Computer Use: This model introduced Anthropic’s groundbreaking computer use capability, allowing it to control desktop applications, navigate websites, and automate complex workflows through visual understanding.

Instruction Following: Exceptional at following nuanced instructions, maintaining context across long conversations, and producing structured outputs in requested formats.

Use Cases

Complex software development and code review
Document analysis and summarization
Research synthesis and report generation
Automated workflow orchestration
Multi-step reasoning and planning tasks

API Integration

import anthropic

client = anthropic.Anthropic()

message = client.messages.create(
    model="claude-3-5-sonnet-20241022",
    max_tokens=1024,
    messages=[
        {"role": "user", "content": "Analyze this codebase for security vulnerabilities."}
    ]
)