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Function Calling Gives LLMs Type Safety, Not Correctness

This story is from 2026-10-09. It is preserved in the archive; the latest stories are on the live feed.

TL;DR — Structured output and function calling guarantee that an LLM's response parses — they say nothing about whether the values inside it are true. Teams that treat schema validation as a success metric end up shipping schema-conformant but semantically wrong tool calls, and grammar-constrained…

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  1. 2026-10-09 13:16 · DEV Community — AI
    Function Calling Gives LLMs Type Safety, Not Correctness

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