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Latent against an LLM judge

This research post by Vedant Gaur (October 4, 2026, 3 min read) answers the first question teams ask: why not have another model check every answer? It measures time and cost for both approaches.

How Latent reads an answer

The post explains the two modes: for a model behind an API, Latent's reader (a Llama 3.1 8B) re-reads the finished answer and scores its activations; inside your own model on vLLM, it reads as the model writes and adds no measurable time.

Results with charts

Charts and tables compare latency and cost, ending with when a judge still makes sense.

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