System Prompts Are Billed on Every Call
Tip beginner

System Prompts Are Billed on Every Call

April 6, 2026
Your system prompt is sent with every API request and billed as input tokens every time. A 2,000-token system prompt on 100,000 daily calls equals 200M tokens/day just in system prompts. Keep system prompts concise, or use prompt caching to amortize the cost.
Category: Token Optimization
Difficulty:beginner

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