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Has anyone here post-trained their own model for their agent harness?

This story is from 2026-09-05. It is preserved in the archive; the latest stories are on the live feed.

Our agent runs the same tools on the same tasks, and we are using frontier models for it. Thinking about post-training our own model internally to be better and cheaper in our harness, but I want to hear feedback first from people who have: a) tried it : what did it take in engineer-weeks and GPU s…

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  1. 2026-09-05 23:41 · r/AI_Agents
    Has anyone here post-trained their own model for their agent harness?

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