AI Agent Cost Tracking 2026

At the end of the month, I was shocked when I received the API bill—how did it cost so much? Cost tracking makes every charge traceable.

💡 What You Will Learn

At the end of the month, I was shocked when I received the API bill—how did it cost so much? Cost tracking makes every charge traceable.

def track_cost(model, input_tokens, output_tokens, user_id):
    cost = calculate_cost(model, input_tokens, output_tokens)
    record = {
        'timestamp': datetime.utcnow().isoformat(),
        'model': model,
        'user': user_id,
        'input_tokens': input_tokens,
        'output_tokens': output_tokens,
        'cost': cost
    }
    db.insert(record)

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Summary