Claude Sonnet 4

AnthropicQuality: 92/100Serving
Try in Playground
✓ Vision✓ Reasoning✓ Tool Use✓ Streaming✓ System Messages

Overview

Claude Sonnet 4 is a high-performance model from Anthropic with a 200K context window, supporting vision understanding, advanced reasoning, function calling. Priced at $0.0030/1K input, $0.015/1K output.

ANT Routing Intelligence

Limited data

Total Requests

0

P50 Latency

800ms

P95 Latency

2500ms

Selection Rate

0.0%

of eligible requests

Intelligence Score

92/100

Quick Start

from openai import OpenAI

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

response = client.chat.completions.create(
    model="claude-sonnet-4",
    messages=[{"role": "user", "content": "Hello!"}]
)
print(response.choices[0].message.content)

Technical Specs

Context Window200K
Max Output64K
Input Price$0.0030/1K
Output Price$0.015/1K
Quality Score92/100
ProviderAnthropic
Model IDclaude-sonnet-4