Tax Agent Bench shows best LLM scores under 50% on tax questions

ziv_ravid · x · 2026-11-01

The author gave the same tax issue to several LLMs and got conflicting answers. Searching around, they found a dedicated Tax Agent Bench — and even the best-performing model (Fable 5.1) gets under 50% of questions right. A reminder that LLMs remain unreliable for professional tax work without human verification.

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