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I Built a Lightweight LLM Framework Because LangChain Frustrated Me,Here's What I Learned

The story of SynapseKit: why it exists, what it does differently, and what 18 objective benchmarks against LangChain and LlamaIndex actually revealed. Cold start 30× faster. 2 dependencies vs 67. This post walks through the architecture decisions, the benchmark methodology, and the uncomfortable results,including where SynapseKit loses. If you're building production LLM applications, the numbers will change how you think about framework choice.