Cost optimization patterns for LLM API usage — model routing by task complexity, budget tracking, retry logic, and prompt caching. Use when LLM spend needs to come down, or when routing tasks across model tiers and budgets.
Install
npx skills add affaan-m/ECC --skill cost-aware-llm-pipelinenpx skills add affaan-m/ECC --skill cost-aware-llm-pipeline -a claude-code -gnpx skills add affaan-m/ECC --skill cost-aware-llm-pipeline -a codex -ggemini skills install https://github.com/affaan-m/ECC.git --path docs/zh-CN/skills/cost-aware-llm-pipelinegh skill install affaan-m/ECC cost-aware-llm-pipelinegit clone --depth 1 https://github.com/affaan-m/ECC /tmp/affaan-m__ECC
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/affaan-m__ECC/docs/zh-CN/skills/cost-aware-llm-pipeline ~/.claude/skills/cost-aware-llm-pipeline # Claude Code
cp -R /tmp/affaan-m__ECC/docs/zh-CN/skills/cost-aware-llm-pipeline ~/.agents/skills/cost-aware-llm-pipeline # Codex, Cursor, Gemini CLI, Copilot, OpenCode