Open resource for developers

Spend less on LLM tokens.
Get better results.

Practical strategies for reducing token usage across Claude, GPT, and other AI models — without sacrificing output quality.

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Context Engineering

Token optimization is a context problem, not a prompt-shortening problem. Learn session management, JIT retrieval, and repo memory.

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Prompt Caching

Cache reads cost 90% less than regular input tokens. Design your prompt architecture for maximum cache hits.

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Tool Overhead

MCP servers and tool definitions can add 55K–134K tokens before any work starts. On-demand loading cuts that by 85%.

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Latest guides

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