The author is evaluating the cost-effectiveness of using Cerebras hardware for LLM inference, specifically with GLM 4.7. While Cerebras offers impressive speed, the lack of prompt caching leads to significantly higher costs compared to providers that support it, with one instance showing a 40x difference in token costs for long conversations. To mitigate this, they are experimenting with a split agent architecture, using a cheaper GPT OSS 120B model on Cerebras for the main agent while keeping the screen-generation sub-agent on GLM 4.7, aiming to balance speed and cost until Cerebras implements prompt caching. AI
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IMPACT Highlights the critical role of prompt caching in LLM inference cost-efficiency and explores architectural workarounds for hardware without this feature.
RANK_REASON The article discusses infrastructure and cost considerations for LLM inference, but it is a personal reflection and evaluation rather than a product release or new research.
