Pattern: Let LLMs judge, let code compute in multi-agent systems

Downtown_Extension_6 · reddit · 2026-08-16

A developer shares a pattern for building multi-agent systems based on the strengths and weaknesses of LLMs. The post argues that LLMs excel at judgment calls under ambiguity but are mediocre at consistent computation tasks like scoring or ranking, often failing silently due to pattern matching. The recommended pattern is to delegate ambiguous decisions to the LLM (e.g., deciding which signals matter) while offloading precise computations to deterministic code tools.

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