Claude, GPT и Grok.
Один API-ключ.

curl https://api.tundraneo.ru/v1/chat/completions \
  -H "Authorization: Bearer tn_your_key" \
  -H "Content-Type: application/json" \
  -d '{"model":"claude-opus-5","messages":[{"role":"user","content":"Hi"}]}'

# Cursor → Settings → Models → OpenAI API

Base URL: https://api.tundraneo.ru/v1
API Key:  tn_your_key
Model:    claude-opus-5

from openai import OpenAI

client = OpenAI(
    base_url="https://api.tundraneo.ru/v1",
    api_key="tn_your_key",
)
r = client.chat.completions.create(
    model="claude-opus-5",
    messages=[{"role": "user", "content": "Hi"}],
)