Jeremy Howard • 10/1/2025

Cachy: How we made our notebooks 60x faster.

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The article details how AnswerAI created Cachy, a Python package that patches the httpx library to automatically cache responses from LLM providers like OpenAI and Anthropic. This eliminates slow, non-deterministic LLM calls in tests and development, making notebooks 60x faster, enabling CI/CD integration, and producing cleaner code diffs without manual mocking.

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#Python #testing #llm
Cachy: How we made our notebooks 60x faster.

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