If your agent needs memory or simple math, use ordinary software first: typed…
If your agent needs memory or simple math, use ordinary software first: typed state, indexes, timestamps, SQL and a deterministic calculator. Wrapping every write or count through another LLM raises cost, leakage, prompt-injection surface, and hides selection bugs behind plausible-sounding “reasoning.” Give the LLM a verb: phrase results, summarize, explain. Keep the authoritative values in sidecars your code owns and audit, not in the model's read/write path.
The memory layer that never calls an LLM: what that buys, and what it costs
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