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Chen Wei

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LLM fine-tuning specialist at a Beijing AI lab, focused on domain-specific adaptation of foundation models for legal and medical text. Built the RLHF pipeline that outperformed GPT-4 on Chinese legal benchmarks.

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Articles by Chen Wei(1)

LLM latency optimisation: batching, caching, and model selection

A deep-dive into the techniques that actually move the needle on LLM response times in production: request batching, prompt caching, model routing, and infrastructure choices that compound to cut p99 latency by 60% or more

llmlatencyperformancecachingbatching

16 July 2026

Chen Wei — ANN Tech — ANN Tech