Anthropic: Claude Sonnet 4.6

anthropic/claude-sonnet-4.6

1000KContext Window

128KMax Output

Supported Protocols:max_tokenstop_ptemperaturestopreasoninginclude_reasoningtoolstool_choicestructured_outputsresponse_formatverbosity

Normal

Sonnet 4.6 is Anthropic's most capable Sonnet-class model yet, with frontier performance across coding, agents, and professional work. It excels at iterative development, complex codebase navigation, end-to-end project management with memory, polished document creation, and confident computer use for web QA and workflow automation.

Capabilities

👁 Vision🧠 Reasoning🔧 Function CallingText GenerationCode GenerationAnalysis & ReasoningReasoning

Technical Specs

Input Modality

Text、Image

Output Modality

Text

Arch

—

Default Temperature

0.7

Default Top_P

Pricing

Pay per use, no monthly fees

Billing Type	Unit	Price
Text Input	—	$3.0000/M tokens
Text Output	—	$15.0000/M tokens
Cache Read	—	$0.3000/M tokens
Cache Write 1h	—	$3.7500/M tokens
Cache Write	—	$3.7500/M tokens
Reasoning	—	$3.0000/M tokens
Web Search	—	$0.0100/次

Quick Start

from openai import OpenAI

client = OpenAI(
    base_url="https://api.uniontoken.ai/v1",
    api_key="YOUR_UNIONTOKEN_API_KEY",
)

response = client.chat.completions.create(
    model="anthropic/claude-sonnet-4.6",
    messages=[
        {"role": "user", "content": "Hello!"}
    ],
)

print(response.choices[0].message.content)