Claude 4 Sonnet

Anthropic

anthropic/claude-4-sonnet

Claude Sonnet 4 significantly improves on Sonnet 3.7's industry-leading capabilities, excelling in coding with a state-of-the-art 72.7% on SWE-bench. The model balances performance and efficiency for internal and external use cases, with enhanced steerability for greater control over implementations. While not matching Opus 4 in most domains, it delivers an optimal mix of capability and practicality.

Capability

Vision Support

Tools

Function Calling

Context Window

200,000

Max Output Tokens

8,192

Language

Python JavaScript Curl

Using Claude 4 Sonnet with Python API

Using Claude 4 Sonnet with OpenAI compatible API

import openai

client = openai.Client(
  api_key= '{your_api_key}',
  base_url="https://api.model.box/v1",
)
response = client.chat.completions.create(
model="anthropic/claude-4-sonnet",
messages: [
  {
    role: 'user',
    content:
      'introduce your self',
    },
  ]
)
print(response)