Claude Sonnet 4 - In-Depth Overview

Anthropic · Claude 4

Current

Latest in family

Model ID: claude-sonnet-4-20250514

Get all the details on Claude Sonnet 4, an AI model from Anthropic. This page covers its token limits, pricing structure, key capabilities such as multimodal_input, long_context, advanced_reasoning, available API code samples, and performance strengths.

Key Metrics

Input Limit

200K tokens

Output Limit

64K tokens

Input Cost

$3.00/1M

Output Cost

$15.00/1M

Sample API Code

import anthropic;client = anthropic.Anthropic(api_key="my_api_key",);message = client.messages.create(model="claude-sonnet-4-20250514",max_tokens=1024,messages=[{"role": "user", "content": "Hello, Claude"}]);print(message.content)

Required Libraries

anthropic

@anthropic-ai/sdk

Benchmarks

Benchmark	Score	Source	Notes
livebench global average	69.65	LiveBench	-
livebench reasoning average	54.86	LiveBench	-
livebench coding average	77.54	LiveBench	-
livebench mathematics average	76.39	LiveBench	-
livebench data analysis average	64.68	LiveBench	-
livebench language average	67.18	LiveBench	-
livebench if average	77.25	LiveBench	-