Anthropic: Claude Opus 4.6 (Fast)

anthropic/claude-opus-4.6-fast

1000KContext Window

128KMax Output

Supported Protocols:max_tokenstop_ptemperaturestopreasoninginclude_reasoningtool_choicetoolsstructured_outputsresponse_formatverbosity

Normal

Fast-mode variant of [Opus 4.6](/anthropic/claude-opus-4.6) - identical capabilities with higher output speed at premium 6x pricing. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode

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	—	$30.0000/M tokens
Text Output	—	$150.0000/M tokens
Cache Read	—	$3.0000/M tokens
Cache Write 1h	—	$37.5000/M tokens
Cache Write	—	$37.5000/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-opus-4.6-fast",
    messages=[
        {"role": "user", "content": "Hello!"}
    ],
)

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