Claude Sonnet 3.7

Retired October 28, 2025

anthropic:claude-sonnet-3.7

Added February 24, 2025

Claude Sonnet 3.7 was Anthropic's flagship model for most usecases. It was Anthropic's first attempt at an agentic model and was released along side Claude Code. It is superceded by Sonnet 4.5.

Blog Post → Simon's Reaction →

Usage

import OpenAI from "openai";

const client = new OpenAI({
    baseURL: "https://api.tributary.cc/openai/v1",
    apiKey: "<TRIBUTARY_API_KEY>",
});

const completion = await client.chat.completions.create({
    model: "anthropic:claude-sonnet-3.7",
    messages: [
        { role: "user", content: "Hello!" }
    ],
});

console.log(completion.choices[0].message.content);

const response = await fetch(
    "https://api.tributary.cc/openai/v1/chat/completions",
    {
        method: "POST",
        headers: {
            "Authorization": "Bearer <TRIBUTARY_API_KEY>",
            "Content-Type": "application/json",
        },
        body: JSON.stringify({
            model: "anthropic:claude-sonnet-3.7",
            messages: [
                { role: "user", content: "Hello!" }
            ],
        }),
    }
);

const data = await response.json();
console.log(data.choices[0].message.content);

from openai import OpenAI

client = OpenAI(
    base_url="https://api.tributary.cc/openai/v1",
    api_key="<TRIBUTARY_API_KEY>",
)

completion = client.chat.completions.create(
    model="anthropic:claude-sonnet-3.7",
    messages=[
        {"role": "user", "content": "Hello!"}
    ]
)

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

import requests

response = requests.post(
    "https://api.tributary.cc/openai/v1/chat/completions",
    headers={
        "Authorization": "Bearer <TRIBUTARY_API_KEY>",
        "Content-Type": "application/json",
    },
    json={
        "model": "anthropic:claude-sonnet-3.7",
        "messages": [
            {"role": "user", "content": "Hello!"}
        ]
    }
)

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

curl https://api.tributary.cc/openai/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $TRIBUTARY_API_KEY" \
  -d '{
    "model": "anthropic:claude-sonnet-3.7",
    "messages": [
      {"role": "user", "content": "Hello!"}
    ]
  }'

Providers

None