---
title: "Cost Control Overview"
description: "Nexus OS tracks every LLM call and enforces budgets to prevent cost overruns. AI agents can be expensive: A single GPT 4 call costs $0.03 0.06 An agent making 1000 calls/day = $30 60/day 10 agents = $300 600/day Without "
resource: https://www.aiagents.nexus/docs/manual/cost-control/overview
generated: { by: "process:nexus-agent-assets", at: 2026-09-07T09:13:03Z }
status: stable
---

# Cost Control Overview

Nexus OS tracks every LLM call and enforces budgets to prevent cost overruns.

## Why Cost Control?

AI agents can be expensive:
- A single GPT-4 call costs ~$0.03-0.06
- An agent making 1000 calls/day = $30-60/day
- 10 agents = $300-600/day
- Without limits, a bug can cost thousands

## How It Works

```
Agent makes LLM call
     ↓
Cost tracker records the cost
     ↓
Budget checker compares against limits
     ↓
├── Under budget → Allow
└── Over budget → Block + alert
```