Claude Sonnet 4.6

claude-sonnet-4-6Anthropic

Pricing

Input	$3/M tokens
Output	$15/M tokens
Cached	$0.3/M tokens
Cache write	$3.75/M tokens

Specs

Context	1,000K
Max output	64K
Input	text + image

max_tokenstemperaturetop_pstoptoolstool_choiceresponse_formatreasoning

curl

curl https://api.modelrail.cc/v1/chat/completions \
  -H "Authorization: Bearer $MODELRAIL_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"claude-sonnet-4-6","messages":[{"role":"user","content":"Hello"}]}'

OpenAI SDK

from openai import OpenAI
client = OpenAI(base_url="https://api.modelrail.cc/v1", api_key=KEY)
r = client.chat.completions.create(model="claude-sonnet-4-6", messages=[{"role":"user","content":"Hello"}])

Anthropic SDK

import anthropic
client = anthropic.Anthropic(base_url="https://api.modelrail.cc", api_key=KEY)
r = client.messages.create(model="claude-sonnet-4-6", max_tokens=1024, messages=[{"role":"user","content":"Hello"}])