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Time-Travel Debugging for LLM Agents: Burr's Counterfactual Replay Architecture

This story is from 2026-10-06. It is preserved in the archive; the latest stories are on the live feed.

Every agent trace tool shows you a waterfall of steps. You spot that step six produced garbage. Now what? You re-run the entire pipeline and hope it lands in the same place. With a non-deterministic model, it doesn't. You can never separate your change from model jitter. The alternative is counterf…

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  1. 2026-10-06 00:08 · DEV Community — AI
    Time-Travel Debugging for LLM Agents: Burr's Counterfactual Replay Architecture

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