Claude Opus 4

About Claude Opus 4

Claude Opus 4 is Anthropic's most advanced AI model, representing the pinnacle of the Claude 4 generation. The model delivers unprecedented performance on complex reasoning, creative tasks, and technical challenges. Claude Opus 4 features an extended context window and demonstrates remarkable ability to understand nuanced instructions and produce thoughtful, well-reasoned responses. It excels at research synthesis, sophisticated code development, and strategic analysis. The model incorporates Anthropic's latest advances in AI safety and alignment. For organizations requiring the absolute best in AI capability, Claude Opus 4 represents the current frontier of responsible AI development. It's ideal for high-stakes applications where output quality justifies premium pricing.

Model Specifications

💰 Real-World Cost Examples

Estimated monthly costs for common use cases

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🚀 Quick Start

Get started with Claude Opus 4 API

import anthropic

client = anthropic.Anthropic()

message = client.messages.create(
    model="anthropic/claude-4-opus-20250522",
    max_tokens=1024,
    messages=[
        {"role": "user", "content": "Hello!"}
    ]
)
print(message.content[0].text)

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