Demo Choosing Models

In this lesson, we’ll show you how to run Flask tests and configure different AI models inside Cursor for autocompletion, code explanation, or multi-step tasks. By the end, you’ll know how to select, customize, and manage models to fit your development workflow.

1. Running Flask Application Tests

Start by defining fixtures and writing basic tests for your Flask app:

import os
import pytest
from app import app, init_db

@pytest.fixture
def client():
    # Initialize test client and database
    with app.test_client() as client:
        with app.app_context():
            init_db()
        yield client
    # Clean up temp database files
    os.close(db_fd)
    os.unlink(app.config['DATABASE'])

def test_index_redirect(client):
    """Ensure the index page redirects to login."""
    response = client.get('/')
    assert response.status_code == 302
    assert '/login' in response.headers['Location']

def test_register(client):
    """Verify user registration flow."""
    response = client.post(
        '/register',
        data={'username': 'testuser', 'password': 'testpass'},
        follow_redirects=True
    )
    assert response.status_code == 200
    assert b'Account created successfully!' in response.data

2. Browsing Model Options in Cursor

Open the chat interface to explore AI model settings:

• Left sidebar: Toggle autocompletion modes (Ask, Agentic, Edit).
• Right pane: Choose a specific model or leave on Auto-select.

3. AI Model Categories

Example: 2 + 2

Traditional LLM

Prompt: "What is 2 plus 2?"
Response: "4"

Thinking LLM

To find 2 plus 2, I add the numbers together: 2 + 2 = 4. Therefore, the answer is 4.

4. Popular Models in Cursor

5. Ask Mode for Detailed Explanations

Switch to Ask Mode to request human-friendly explanations:

“Explain what def test_index_redirect means.”

def test_index_redirect(client):
    """Test that the index page redirects to login."""
    response = client.get('/')
    assert response.status_code == 302
    assert '/login' in response.headers['Location']

With GPT-4 in Ask Mode, you might see:

“This function uses Flask’s test client to ensure a request to / returns a 302 redirect to /login.”

Experiment by selecting a thinking model and adding prompts like “explain it like I’m five” for varied results.

6. Customizing Models in Settings

Under Cursor Settings → Models, you can:

• Toggle models on/off
• Enter API keys for OpenAI, Anthropic, Google Cloud, Azure
• Manage billing preferences (Cursor Pro vs. public API)

Enable or disable the models you need, then close the panel to apply changes.

Links and References

• Kubernetes Documentation
• OpenAI
• Anthropic
• Google Cloud AI
• Azure AI Services