One AI API
for all your models

from openai import OpenAI

client = OpenAI(
    api_key="YOUR_KOSAREVA_KEY",
    base_url="https://api.kosareva.cloud/v1",
)

resp = client.chat.completions.create(
    model="claude-sonnet-5-5",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(resp.choices[0].message.content)

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.KOSAREVA_API_KEY,
  baseURL: "https://api.kosareva.cloud/v1",
});

const response = await client.chat.completions.create({
  model: "gpt-6-1-sol",
  messages: [{ role: "user", content: "Hello!" }],
});
console.log(response.choices[0].message.content);

curl https://api.kosareva.cloud/v1/chat/completions \
  -H "Authorization: Bearer $KOSAREVA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gemini-3-1-pro",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

# no /v1 here: Claude Code adds the path itself
export ANTHROPIC_BASE_URL="https://api.kosareva.cloud"
export ANTHROPIC_AUTH_TOKEN="YOUR_KOSAREVA_KEY"
claude