AI Agent Prompt Compression 2026

The system prompt was written in 2,000 characters, and each call burned through hundreds of tokens just on the prompt alone. Prompt compression cut the length down to a third, and everything that needed to be remembered is still there.

💡 What You Will Learn

The system prompt was written in 2,000 characters, and each call burned through hundreds of tokens just on the prompt alone. Prompt compression cut the length down to a third, and everything that need

📜 Table of Contents

• Results
• Summary

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def compress_prompt(prompt: str) -> str:
    # 1. 
    prompt = remove_comments(prompt)
    # 2. 
    prompt = re.sub(r'\n{3,}', '\n\n', prompt)
    # 3. 
    prompt = shorten_tool_descriptions(prompt)
    return prompt

Results

Summary