Building AI Agents That Don't Hallucinate: A Practical Guide to Function Calling in 2026
If you've built anything with LLMs in the last year, you've probably hit the same wall everyone does: the model confidently invents a function signature, hallucinates parameter values, or calls the wrong tool entirely.
Function calling was supposed to fix this. In practice, it often makes things worse ??because now your agent is confidently wrong at scale.
Let's fix that.
Why Function Calling Still Breaks in Production
