CEFR_LEVELS = ['A1', 'A2', 'B1', 'B2', 'C1', 'C2']

GPT_MODELS = {
    'default': 'gpt-4o',
    'fast': 'gpt-4o-mini',
}

TEMPERATURE = 0.7

TOPICS = [
    'Education', 'Technology', 'Health', 'Environment', 'Culture',
    'Travel', 'Science', 'Business', 'Sports', 'Society',
]